Wa65 80-5 Vebm250100
Wa65 80-5 Vebm250100
Wa65 80-5 Vebm250100
WA65-5
WA70-5
WA80-5
WHEEL LOADER
MODEL: SERIAL NUMBER:
WA65-5 H50051 AND UP
WA70-5 H50051 AND UP
WA80-5 H50051 AND UP
• This shop manual may contain attachments and optional equipment that are not available in your area.
Please consult your local KOMATSU distributor for those items you may require. Materials and specifica-
tions are subject to change without notice.
• The Wheel Loaders WA65-5, WA70-5 and WA80-5 are equipped with the engine 4D95LE-3
For details of this engine see Engine Manual, P/N CU3666417-00.
© 2005
All Rights Reserved
Printed in Europe 05/05
CONTENTS
No. of page
00 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .00-1
01 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .01-1
90 OTHERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90-1
Safety notice
General Precautions
Mistakes in operation are extremely dangerous. Read the
OPERATION AND MAINTENANCE MANUAL carefully before
operating the machine! Always follow the safety rules valid
in your country carefully!
1. Before carrying out any greasing or repairs, read all the pre-
cautions given on the decals which are fixed to the machine.
5. Keep all tools in good condition and learn the correct way to
use them.
4. Remove all mud and oil from the steps or other places used
to get on and off the machine. Always use the handrails, lad-
ders or steps when getting on or off the machine. Never
jump on or off the machine. If it is impossible to use the
handrails, ladders or steps, use a stand to provide safe foot-
ing.
2. Lower the work unit to the ground and switch off the engine.
6. Take the hand pump lever out of its holder on the radiator (2)
and insert it into the receptacle of the pump (3).
7. Set the lever at the pump to "pump up" and pump the cab
upward until it reaches the limit stop.
8. Move the safety rod on the right side upward until it reaches
the pin at the cab floor.
9. Set the lever at the pump to "pump down" and pump the cab
downward until the safety rod is secure against the right side
of the cab floor.
2. Fold down the safety rod on the right side and fasten it in this
position (arrow).
3. Set the lever to "pump down" and pump the cab downward
until the cylinder is entirely retracted (the resistance at the
lever increases markedly).
NOTE
Make sure that the guide pin (arrow) on the left of the rear
frame is inserted into the guide bushing of the cab.
4. Screw in the fastening screws for the cab (2 left, 2 right) and
tighten the screws.
5. Remove the lever from the pump and fasten it to the radiator.
3. The water and oil in the circuits are hot when the engine is
stopped, so be careful not to get burned.
Wait for the oil and water to cool before carrying out any
work on the oil or water circuits.
4. Before starting work, remove the leads from the battery. Al-
ways remove the lead from the negative (-) terminal first.
8. When removing piping, stop the fuel or oil from spilling out. If
any fuel or oil drips onto the floor, wipe it up immediately. Fu-
el or oil on the floor can cause you to slip, or can even start
fires.
When installing hoses and wires, be sure that they will not
be damaged by contact with other parts when the machine
is being oper ated.
11. When installing high pressure hoses, make sure that they
are not twisted.
12. When aligning two holes, never insert your fingers or hand.
Be careful not to get your fingers caught in a hole.
Foreword
General
This shop manual has been prepared as an aid to improve the
quality of repairs by giving the service personnel an accurate un-
derstanding of the product and by showing them the correct way
to perform repairs and make judgements. Make sure you under-
stand the contents of this manual and use it to full effect at every
opportunity.
Maintenance standard
This section gives the judgement standards when inspecting dis-
assembled parts.
NOTE
The specifications contained in this shop manual are subject to
change at any time and without any advance notice. Use the
specifications given in the book with the latest date.
Volumes
Shop manuals are issued as a guide to carrying out repairs.
Filing method
1. See the page number on the bottom of the page. File the
pages in correct order.
10 - 3
Item number (10. Structure and Function)
Example:
10-4
10-4.1
Added Pages
10-4.2
10-5
Symbols
So that the shop manual can be of ample practical use, impor-
tant safety and quality portions are marked with the following
symbols:
Safety Special safety precautions are necessary when performing the work.
Caution
Special technical precautions or other precautions for preserving standards are necessary
when performing the work.
3 Tightening torque Places that require special attention for the tightening torque during assembly.
Oil, water Places where oil, water or fuel must be added, and the capacity.
5
Drain Places where oil or water must be drained, and quantity to be drained.
6
Hoisting instructions
1. Check for removal of all bolts fastening the part to the rela-
tive parts.
Wire ropes
1. Use adequate ropes depending on the weight of parts to be
hoisted, refering to the table below:
Wire ropes:
(Standard "Z" or "S" twist ropes without galvanizing)
10 1.0
11.2 1.4
12.5 1.6
14 2.2
16 2.8
18 3.6
20 4.4
22.4 5.6
30 10.0
40 18.0
50 28.0
60 40.0
Slinging near the edge of the hook may cause the rope to
slip off the hook during hoisting, and a serious accident can
result. Hooks have maximum strength at the middle portion.
3. Do not sling a heavy load with one rope alone, but sling with
two or more ropes symmetrically wound onto the load.
Slinging with one rope may cause turning of the load during
hoisting, untwisting of the rope, or slipping of the rope from
its original winding position on the load, which can result in
a dangerous accident.
When hoisting a load with two or more ropes, the force sub-
jected to each rope will increase with the hanging angles.
α
kg
(kg)
2000
(kg)
1900
1700
2000
capacity
Capacity
1400
(kg)
1000
Gewicht
1000
Load
500
Load
Specifications WA65-5
Model 4D95LE-3
Flywheel horsepower [kW {hp} (PS) / rpm] 40.0 [53.6} (54.4) / 2350
Alternator 12V - 60 A
Battery 12V - 92 Ah
Differential Limited slip differential, locking value 25% or locking value 100%
Tire 335/80R18
Service brake Disc brake outside on the front axle (acting on all 4 wheels by transfer over the drive
shaft)
Brakes
Parking brake Disc brake outside on the front axle (acting on all 4 wheels by transfer over the drive
shaft)
Wheel Bellcrank 59
Specifications WA70-5
Model 4D95LE-3
Flywheel horsepower [kW {hp} (PS) / rpm] 45.0 [60.3} (61.2) / 2350
Alternator 12V - 60 A
Battery 12V - 92 Ah
Differential Limited slip differential, locking value 25% or locking value 100%
Tire 12.5 - 18
Service brake Disc brake outside on the front axle (acting on all 4 wheels by transfer over the drive
shaft)
Brakes
Parking brake Disc brake outside on the front axle (acting on all 4 wheels by transfer over the drive
shaft)
Wheel Bellcrank 59
Specifications WA80-5
Model 4D95LE-3-A
Flywheel horsepower [kW {hp} (PS) / rpm] 45.0 [60.3} (61.2) / 2350
Alternator 12V - 60 A
Battery 12V - 92 Ah
Differential Limited slip differential, locking value 25% or locking value 100%
Service brake Disc brake outside on the front axle (acting on all 4 wheels by transfer over the drive
shaft)
Brakes
Parking brake Disc brake outside on the front axle (acting on all 4 wheels by transfer over the drive
shaft)
Wheel Bellcrank
Hydraulic Oil
HYD 0530
HVLP
-15° to 20°C ISO VG 46 1)
HYD 1030 -20° to 30°C ISO VG 68
HYD HVLP D
HYD 1540 -15° to 45°C ISO VG 100
Driving Direction,
CCMC D4 or, if not
Hydraulic EO 1540 A -15° to 45°C SAE 15W-40 45
or available:
System, EO 1030 A -20° to 30°C SAE 10W-30 (30)*
Engine Oil EO API CE or
Steering NRS -15° to 45°C SAE 05W-30
API CF-4 2)
or Hydraulic Oil HEES (acc. to VDMA
BIO-E-HYD 0530 -15° to 20°C ISO VG 46
BIO-E-HYD fluid technology)
Automatic Trans- TYP A,
Service Brake ATF – – 1.0
mission Gear Oil Suffix A
Proportion of Mixture:
Cooling Long-Time Antifreeze and Corro-
SP-C 50% Coolant: 50% Water 9.1
System Coolant sion Protection
Min. Freeze Proofing: -34°C
CFPP Class B up to 0°C
3) CFPP Class D up to -10°C
Fuel Tank Diesel Fuel DIN-EN 590 – 81
CFPP Class E up to -15°C
CFPP Class F up to -20°C
Lithium-Based
Grease Nipple Multi-Purpose MPG-A KP 2N-20 – NLGI 2 ---
Grease
Coolant NRS R134a (CFC-free) 1200 g
Air conditioner --- ---
Refrigerant oil NRS PAG (polyalkylglycol) 180 cm³
*) Top-up quantity
1
) Factory filling
2
) If engine oil of either the API CE or the API CF - 4 specification is not available, engine oil of either the API CC or the API CD
specification may be used. In these cases, the oil change intervals must be cut in halves.
3) If fuels with a sulphur content between 0.5 and 1.0% are used, the oil change intervals for the engine must be cut in halves;
if the sulphur content exceeds 1.0%, the oil change intervals must be quartered.
Hydraulic Oil
HYD 0530
HVLP
-15° to 20°C ISO VG 46 1)
HYD 1030 -20° to 30°C ISO VG 68
HYD HVLP D
HYD 1540 -15° to 45°C ISO VG 100
Driving Direction,
CCMC D4 or, if not
Hydraulic EO 1540 A -15° to 45°C SAE 15W-40 50
or available:
System, EO 1030 A -20° to 30°C SAE 10W-30 (32)*
Engine Oil EO API CE or
Steering NRS -15° to 45°C SAE 05W-30
API CF-4 2)
or Hydraulic Oil HEES (acc. to VDMA
BIO-E-HYD 0530 -15° to 20°C ISO VG 46
BIO-E-HYD fluid technology)
Automatic Trans- TYP A,
Service Brake ATF – – 1.0
mission Gear Oil Suffix A
Proportion of Mixture:
Cooling Long-Time Antifreeze and Corro-
SP-C 50% Coolant: 50% Water 9.1
System Coolant sion Protection
Min. Freeze Proofing: -34°C
CFPP Class B up to 0°C
3) CFPP Class D up to -10°C
Fuel Tank Diesel Fuel DIN-EN 590 – 84
CFPP Class E up to -15°C
CFPP Class F up to -20°C
Lithium-Based
Grease Nipple Multi-Purpose MPG-A KP 2N-20 – NLGI 2 ---
Grease
Coolant NRS R134a (CFC-free) 1200 g
Air conditioner --- ---
Refrigerant oil NRS PAG (polyalkylglycol) 180 cm³
*) Top-up quantity
1
) Factory filling
2
) If engine oil of either the API CE or the API CF - 4 specification is not available, engine oil of either the API CC or the API CD
specification may be used. In these cases, the oil change intervals must be cut in halves.
3) If fuels with a sulphur content between 0.5 and 1.0% are used, the oil change intervals for the engine must be cut in halves;
if the sulphur content exceeds 1.0%, the oil change intervals must be quartered.
Oil
• The oil in the engine and in the hydraulic system is subject to extreme conditions (high temperatures, high
pressures). Therefore, the oil quality will decrease with extended operation.
Always use oils prescribed for the works and temperatures indicated in the operating and maintenance man-
ual. Always observe the prescribed oil change intervals.
• Always handle oils with extreme care so that they are not contaminated.When storing or refilling oil, make
sure that it is not contaminated. The majority of all malfunctions is caused by the penetration of dirt and other
contaminations.
• Always refill the prescribed oil quantity. Too little or excessive oil may cause malfunctions.
• If the oil in the hydraulic system is not clear (milky), water or air is propably introduced into the circuit. In such
cases, call your Komatsu dealer.
• Upon each oil change, the related filter must be replaced as well.
• We recommend to have an oil analysis carried out in regular intervals in order to check the machine condi-
tion. Customers who desire such an oil analysis should contact their Komatsu dealer.
Fuel
• The fuel pump is a precision instrument; if fuel containing water or dirt is used, it cannot work properly.
• Be extremely careful not to let impurities penetrate when storing or adding fuel.
• Always use the fuel specified in the Operation and Maintenance Manual. Fuel may congeal depending on the
temperature (particularly at low temperatures below -15°C), so change to a fue matching this temperature.
• To prevent the moisture in the air from condensing and forming water inside the fuel tank, always fill the fuel
tank after completing the day's work.
• Before starting the engine, or when 10 minutes have passed after adding fuel, drain the sediment and water
from the fuel tank.
• If the engine runs out of fuel, or if the filters have been replaced, it is necessary to bleed the air from the cir-
cuit.
• If the fuel sulphur content is between 0.5 and 1.0%, the oil change interval must be 1/2 normal. If the fuel sul-
phur content is more 1.0%, the oil change interval must be 1/4 normal.
Coolant
• River water contains large amounts of calcium and other impurities, so if it is used, scale will stick to the en-
gine and radiator causing a defective heat exchange and overheating.
• When using anti-freeze, always observe the precautions given in the Operation and Maintenance Manual.
• Komatsu machines are supplied with Komatsu original anti-freeze in the coolant when the machine is
shipped. This anti-freeze prevents corrosion in the cooling system. The anti-freeze can be used continuously
for two years or 4000 hours. Therefore, it can be used as it is even in hot areas.
• Anti- freeze is flammable, so be extremely careful not to expose it to open flame or fire.
• The proportion of anti-freeze to water differs according to the ambient temperature. For details of the mixing
ratios, see Operation Manual: CLEANING THE INSIDE OF THE COOLING SYSTEM".
• If the engine overheats, wait for the engine to cool before adding coolant.
• If the coolant level is low, it will cause overheating and corrosion due to the air in the coolant.
Grease
• Grease is used to prevent twisting and noise at the joints.
• The nipples not included in the maintenance section are nipples for overhaul, so they need not be lubricated.
If any part becomes stiff after being used for a long time, add grease.
• Always wipe off all of the old grease that is pushed out when greasing. Be particularly careful to wipe off the
old grease in places where sand or dirt in the grease would cause the rotating parts to wear.
• When keeping barrels for a long period, lay down the barrel on its side so that the filler port is at the side (to
prevent moisture from being sucked in).
If barrels have to be stored outside, cover them with a waterproof sheet or take other measures to protect
them.
• To prevent any change in quality during long term storage, be sure to use in the order of 'first in - first out'
(use the oldest oil or fuel first).
Filters
• Filters are extremely important safety parts. They prevent impurities in the fuel and air circuits from entering
important equipment and causing problems.
Replace all filters periodically. For details, see the Operation and Maintenance Manual.
However, when working under severe conditions, it is necessary to consider replacing the filters at shorter in-
tervals according to the oil and fuel (sulfur content) being used.
• Never try to clean the filters (cartridge type) and use them again. Always replace with new filters.
• When replacing oil filters, check if any metal particles are stuck to the old filter. If any metal particles are
found, please contact your Komatsu distributor.
• Do not open packs of spare filters until just before they are to be used.
• Never install any electric components other than those specified by Komatsu.
• Be careful to keep the electric system free of water when washing the machine or when it is raining.
• When working on the seashore, carefully clean the electric system to prevent corrosion.
• The optional power source must never be connected to the fuse, starter switch, or battery relay.
NOTE
When tightening panels or other parts having tightening fixtures
made of plastic, be careful not to use excessive tightening torque:
doing so will damage the plastic parts.
M8 13 35 3.5 19 1.9
M 10 17 (15) 70 7 37 3.7
M 33 50 2600 260 – –
M 36 55 3300 330 – –
M 39 60 4300 430 – –
M8×1 13 35 3.5 20 2
M 18 × 2 27 420 42 230 23
M 20 × 2 30 – – 322.5 32.25
M 22 × 2 32 – – 436 43.6
M 33 × 2 50 2800 280 – –
M 36 × 3 55 3500 350 – –
M 39 × 3 60 4600 460 – –
WA80-5: Front axle ................................ 10-19 Lifting frame with quick-coupler ........... 10-54
With inner disc brake as service brake and Quick-coupler ......................................... 10-55
outer disc brake as parking brake .................... 10-19
Monitor display ....................................... 10-56
Rear axle with transfer box ................... 10-20
Sensors ................................................... 10-57
Transfer box TB172 ............................... 10-21 Engine oil pressure sensor .............................. 10-57
Limited slip differential Fuel level sensor .............................................. 10-58
(locking value 25%) ................................ 10-22 Engine coolant temperature sensor ................. 10-59
Brake oil reservoir sensor ................................ 10-60
Locking differential
(locking value 100%) .............................. 10-24 Ribbon heater ......................................... 10-61
Wheel hub, front and rear axle ............. 10-26 Engine stop / start / preheating circuit . 10-62
WA65-5 / WA70-5: Service and Electrical fuses and relays .................... 10-64
parking brake, front axle ....................... 10-27 Fuses ............................................................... 10-64
WA80-5: Service brake, front axle ........ 10-29 Relays .............................................................. 10-65
Engine room .................................................... 10-66
WA80-5: Parking brake, front axle ........ 10-30
Electrical diagrams ................................ 10-67
Sevice and parking brake circuit .......... 10-31 Wiring diagram 1/5 - foldout 90-9 .................... 10-67
WA65-5 / WA70-5: Service brake Wiring diagram 2/5 - foldout 90-11 .................. 10-67
assembly ................................................. 10-32 Wiring diagram 3/5 - foldout 90-13 .................. 10-67
WA80-5: Service brake assembly ......... 10-33 Wiring diagram 4/5 - foldout 90-15 .................. 10-67
Wiring diagram 5/5 - foldout 90-17 .................. 10-67
Inch-brake Valve .................................... 10-34 Speed control - foldout 90-19 .................. 10-67
Steering articulation joint ...................... 10-35 Immobilizer - foldout 90-21 .................. 10-67
Powertrain
1 2 3
Engine:
KOMATSU
4D95LE-3
n = 2350 min -1
5 4
Outline
• The engine power is transmitted to the drive axles through a
hydrostatic system. The system consists of a variable dis-
placement pump mounted on the engine and a variable dis-
placement motor mounted on the rear axle transmission
distribution box. Power is transmitted from the variable dis-
placement motor through the distribution box to the front and
rear axles. The front axle is driven through a prop shaft from
the distribution box.
Closed circuit
Outline
Installation step by step
• A hydraulic system is described as closed when the hydrau-
lic fluid is returned from the user direct to the pump.
• There is a high pressure and a low pressure side, depend- a max a max
ing on the direction of load (take-off torque at the user).
a min
• The high pressure side is protected by pressure relief
valves, which unload to the low pressure side. The hydraulic a max motor
fluid remains in the circuit. Only the continuous leakage from pump
pump and motor (dependent on operating data) must be re-
placed. Basic system with variable pump and variable motor.
Single pump input drive direction. Motor power take-
• This fluid is replenished by an integrated auxiliary pump off in both directions. The pump can be swivelled
(normally), which delivers a continuous, adequate supply of smoothly over centre, i.e. the direction of flow is
fluid (boost fluid) via a check valve into the low pressure side reversible.
of the closed circuit. Any surplus flow of the boost pump
which operates in open circuit, is returned via a boost pres-
sure relief valve to the tank. The boosting of the low pres-
DBV
sure side enhances the pump operating characteristics. ∆ Ρmax
Typical features of the closed circuit for axial piston units
DBV
are: ∆ Ρmax
• directional control valves - small sizes for pilot operation
• filter/cooler - small sizes Pressure relief valves - one each for the high and low
pressure sides - prevent the maximum permissible
• tank size - small, dimensioned to suit boost pump flow pressure form being exeeded.
and volume of system
oil tank
boost check
aux- valve
iliary boost
pump pressure
valve
filter
coller
80
9. Hydraulic travel pressure cut-off
valve
10. Charge pump
11. Steering and working hydraulic
pump
12. Shuttle flushing valve
13. Throttle check valve
only WA65-5/WA70-5
14. Drive range valve
15. Check valve
16. Control piston
17. Control valve
1. Range: Energized
2. Range: De-energized
18. Variable displacement motor
19. Suction and return filter
Z1 Air bleeding valve
M1 Control pressure check point
M2 Charge pressure check point
M3 Forward travel pressure check M1
point
M4 Reverse travel pressure check
point M2
Z1
160
9. Hydraulic travel pressure cut-off
valve
10. Charge pump
11. Steering and working hydraulic
pump
12. Shuttle flushing valve
13. Throttle check valve
14. Drive range valve
only WA65-5/WA70-5
point
M4 Reverse travel pressure check
point
M2
2.4-4.5bar
Z1
71
WA80-5=45KW
1 2 3 4 5 6
1. Drive shaft
2. Swivel bearing
3. Screw plug
4. Swash plate
5. Adjusting lever, adjusting cylinder-swash plate
6. Screw plug
7. Adjusting cylinder
8. Adjusting screw for mechanical 0-position of wash plate
9. 4/3 way valve with electric forward reverse direction prese-
lection
7 8 9
10 11 12 13
12 14
1. Drive shaft
2. Pistons
3. Piston area
4. Piston displacement
5. Swash plate
6. Operating angle
7. Cylinder head
8. Drive shaft
9. Control plate
10. Top dead centre
11. Bottom dead centre
12. Inlet port (rotation as shown)
13. Outlet port (rotation as shown)
Function
• The swash plate drive unit is a displacement pump, where
the displacement pistons are mounted axialy parallel to the
drive shaft. They react against the swash plate.
The cylinder head rotates with the drive shaft. The pistons
(2) are mounted in the cylinder head. The pistons are
mounted in guide shoes; these glide over the swash plate
and cause an axial displacement in the cylinder head. The
guide shoes are held with spring pressure against the swash
plate.
Sucktion takes place when the oil fills the increasing dis-
placement (cylinder). The oil is forced into the cylinder by
feed pump pressure.
The returning piston then forces the oil out of the cylinder
head through the outlet port.
When the swash plate angle changes over the neutral posi-
tion, the pumped direction also changes. Inlet becomes out-
let, outlet becomes inlet.
Regulating valve
1. Spring cup 8
2. Pressure spring
3. Housing 9
4. Nut
5. Ring
10
6. Piston 1
7. Throttle
11
8. Seal nut 2
12
9. Screw
3 Psp
10. Circlip
11. O-ring 4
12. Coller 13
13. Circlip 5
R
14. Regulating cylinder 14
6
15. Circlip Pst
15
P = from pump 7
P
Pst = Control pressure
Psp = Boost pressure
R = Return to tank
1 2 3
1. Valve housing
2. Spring cup Ps p
3. Pressure spring R
4. O-ring
5. Control piston
6. Shim
4 5 6
Control cylinder
1 2 3 4 5 6
1. O-ring
2. Pressure spring
3. Pressure spring
4. Control cylinder
5. Distance ring
6. Circlip
7. Collet B A
8. Ring, variable
7 8 9 10 1 1
9. Spring cup
10. Spring cup
11. Rod
1 2 3
1. Grub screw
2. Control piston
3. O-ring
4. Plug connector
5. Pressure spring
6. Spring cup
4 5 6 7 8 9
7. Valve housing
8. Direction control solenoid
9. Plug connector
6
1. Seal nut 1
2. Spring cup 7
3. O-ring 2
4. Pressure spring
5. O-ring 3
6. Adjusting screw 8
7. Cap screw
4
8. Control piston Ps t
9
9. Valve bush
10. Piston R
11. Control piston 10
Pb
12. Valve seat
11
Pa = Travel pressure Pa
Pb = Travel pressure 5
12
R = Return oil to tank
Rst = Control pressure
Safety-/charge valve
6
1. Cap screw
7
2. Pressure spring
3. Screw 1
4. Valve stem guide 8
5. Valve cup 9
6. Adjusting screw
7. Seal nut 2 10
8. O-ring
9. Pressure spring, conical 3 11
10. Spring fixing plate 12
11. Backup ring
4
12. O-ring
Towing
Function
• Machines with hydrostatioc drives should only be towed
when a connection is made in the drive pump between the
1
high pressure and low pressure sides. To enable this, the
high pressure safety valves in the pump have a by-pass
function. That means, when screw (1) is turned the valve
tension is released and the oil can flow between the high
pressure and low pressure sides.
Bypass function
• Release the locknut and srew in the screw (1) until the top of
the screw is level with the locknut. 1
• Tighten the locknut.
Valve Function
• Release the locknut and screw out the screw (1) until the
screw reaches the end of its stroke.
NOTE
If the machine has to be towed over a longer distance and with
higher speed the drive shaft has to be removed. The steering joint
must be locked and a crane used to lift the rear axle.
1 2 3 4 5 6 7 8 9 10 11 1 2 1 3
1. Output shaft
2. Retaining ring with washer
3. Retaining ring
4. Tapered roller bearing
5. Adjusting shim
6. Tapered roller bearing
7. Cone piston with piston rings, 7 units 14
8. Center pin 15
9. Cylinder 16
1. Drive shaft
2. Pistons
3. Piston area
4. Piston displacement
5. Swash plate
6. Operating angle
7. Cylinder head
8. Control plate
9. Top dead centre
10. Bottom dead centre
11. Inlet port (rotation as shown)
12. Outlet port (rotation as shown)
Function
• The drive motor is the opposite working principle to the drive
pump. In this case oil under pressure is sent to the drive mo-
tor. Oil enters the motor through thje control plate into the
cylinders. Four or five cylinders are in connection through
the kidney shaped inlet port with oil under pressure. The
other cylinders are connected through the kidney shaped
outlet port to the oil return side.
Drive shaft
1 7 2 7 3 4
5 6 5
1. Nut
2. Washer
3. U-bracket
1 2 3 4 5
8 8
7 7
3
4 4
6 1 2 6
1. Oil filling and level plug 5. Parking brake (outer disc brake)
2. Oil drain plug 6 Brakes connection port for service brake
3. Oil breather 7 Service brake (inner multiple disc brake)
4. Oil filling level and drain plug for 8 Bleeding screw for service brake
epicyclic reduction gear
8
7
5 6
3
4
1
14
15
16
17
24 19 18
20
22 21
23
1. O-ring 13 Seal
2. Flange 14 Bolt
3. Breather 15 Seal
4. Speed sensor 16 Snap ring
5. O-ring 17 Bearing
6. Bearing 18 Output gear
7. Input gear 19 Bearing
8 Bearing 20 Seal
9 Half housing 21 Cover
10 Rear support 22 Shaft
11 O-ring 23 Plug
12 Bushing 24 Half housing
Description
• The variable displacement motor is mounted on the mounting flange (2). The drive torque is transmitted from
the motor to the input gear (7). The torque is then transmitted mechanically to the output gear (18) and the
output shaft (22). The torque is transmitted from the distribution box through the differential to the drive
shafts.
2 3 4
1 5
12 8
9
11 10
Function
• Because of the nature of their work, 4-wheel drive loaders
have to work in places where the road surface is bad.
Operation
• The self locking effect depends on the internal friction of the
differential. It is produced by two multi-disc brakes, which
are arranged symmetrically in the differential cage. With a
conventional differential, one wheel can be stopped or
slowed down without any difficulty when the vehicle is
jacked up when driving.
If one drive wheel starts to lose traction with the ground the
planet gears (3) turning on the pins (2) start to rotate around
the sun gears (5). This takes place because the other drive
wheel now turns slower than the wheel that is slipping.
1 2 3 4 5 6
2 6
13
9
10
12
11
Operation
• With a conventional differential, one wheel can be stopped
or slowed down without any difficulty when the vehicle is
jacked up when driving.
• If one drive wheel starts to lose traction with the ground the
planet gears (10) turning on the pins (8) start to rotate
around the sun gears (1). This takes place because the oth-
er drive wheel now turns slower than the wheel that is slip-
ping.
A fork (3) pull a sleeve (5) over the differential case (7) with
three lock pins (6). The sleeve (4) pull the lock pins (6) into
three holes in the sun gear (1). Now the differential case (7)
is locked wth the sun gear (1).
4
2
6 7 8 9 10
10
11
12
13 14 15 16
1 2 3 4 5 6 7 8 9 10 11
12
13
5 Adjusting nut
8 Brake pston
14
4 Coil spring
14 Differential piston
7 Washer
9 Elastic washer
10 Threaded rod
15
16 17 18 19 20
7 6 5 4 3 2 1
13
12
11
9 10
• Service brake
• The service brakes are two multi disc wet type units operat-
ing in the front axle.
• Function
• When pressing the brake pedal the inch valve opens and
the servo oil in the variable displacement pump flows to the
tank. At same time the brake master cylinder is operated.
The oil from brake master cylinder flows to brake pistons.
The brake pistons press the pressure plate against the multi
disc. The inner and outer discs are compressed and the
drive shafts are braked.
1 2 3 4 5 6 7 8 9 10 11
12
13
Parking brake
• The parking brake consists of: Hand brake lever,
bowden cable, work lever and linkage lever.
Function
• When the hand brake lever is released, the remove
springs returns the brake shoes and in their starting
position. The parking brake is released.
1.Inch-brake valve
2.Brake oil tank
3.Front axle
4.Brake drum
5.Lever for mechanical
operated parking brake
P Line to priority valve
3
5
4
P
2
1 2 3 4 5
6 7 8 9 10
Function
• The inch valve is mounted in the variable displacement
pump. The inch valve is connected to the brake pedal with a
hydraulic hose (6).
• That means, that when the pump moves towards the neutral
position the drive torque is slowly reduced and the machine
can roll to a stop. At the same time the brake master cylin-
der is activated and brakes the machine.
7 6 5 4 3 2 1
13
12
11
9 10
Function
• The inch valve is mounted in the variable displacement
pump. The inch valve is connected to the brake pedal with a
hydraulic hose (6).
• That means, that when the pump moves towards the neutral
position the drive torque is slowly reduced and the machine
can roll to a stop. At the same time the brake master cylin-
der is activated and brakes the machine.
Inch-brake Valve
2
3
6
4
5
8 7
Function
• The inch valve in the variable displacement pump allows, in-
dependent of engine speed and driving resistance, a vari-
able speed reduction. When the brake pedal is pressed.A
pilot pressure is aplicated on the inch valve. It reduces the
servo pressure and the pump moves towards the no-dis-
placement position (neutral). In this position no oil is
pumped. The wheel loader stops. At the same time the
brake master cylinder is activated and brakes the machine
Description
• The front frame (1) and the rear frame (7) are connected
through the upper (10) and lower steering articulation joint
(3).
Steering system
1. Steering cylinder
2. Safety valve
3. Anti-cavitation valve
4. Steering unit
5. Rotary spool
6. Steering pressure relief valve L 2 R
7
8. Check valve
4
9. Priority valve
10. Hydraulic pump
11. Oil tank 5
250-125 ccm/U
185 bar
8
Priority valve port identification P 6 T LS
POS.2
10
Priority valve
Outline
• The priority valve serves to ensure that in a steering opera-
tion oil is supplied to the steering system as a matter of pri-
ority; the residual quantity of oil is fed to the loader hydraulic
system. When no steering takes place, all the oil is passed
to the loader hydraulic system.
1 2 3 4 5 6 7
LS
EF CF
1. Screw fitting
2. Sealing ring
3. Orifice
4. Control piston
5. Sealing ring
6. Spring
7. Spring sleeve with orifice
Orbit-roll-valve
Outline
• The orbit-roll is connected to the steering wheel through the
steering column. The orbit-roll controls the oil flow from the
steering pump to the steering cylinder and sets the steering
angle. The amount of oil delivered is proportional to the
amount the steering wheel is turned.
• The control spool (4) and the control sleeve (6) form the
steering control valve. In normal working condition the oil
displacement system, made up of rotor (2) and stator (1) op-
erates as a hydraulic pump. In an emergency steering situa- 3
tion the unit operates as a hand pump.
Structure 4
1
• The control spool (4) is directly connected to the steering
wheel column and is connected to the control sleeve (6) by
the centre pin (7) and the centring springs (5). 2 5
The control spool (4) and the control sleeve (6) do not have
contact with each other in the neutral position. 6
• The drive shaft (3) is meshed with the centre pin (7), and
forms one unit with the control sleeve (6). The other end of 7
the drive shaft (3) is meshed with the splines of the rotor (2)
of the girotor.
8
• There are four ports in the valve body (8). They are connect- PR
ed to the steering pump, to the tank and to the steering cylin-
ders. There is a check valve (9) mounted between the pump TL
port and the tank port. If the steering pump or the engine fail,
oil for the emergency steering can be drawn for the girotor
through the check valve (9).
1. Orbit-roll valve
2. Pressure limiting valve
3. Valve seat (spool) 1
4. O-ring
5. Backup ring
6. Pressure spring
7. Distance bush R
P
8. Clamping screw
9. Sealing ring
10. Screw plug L
T
Function
• The steering relief valve (2) is inside the orbit-roll valve (1),
and sets the maximum circuit pressure of the steering circuit 3
when the orbit-roll valve is actuated. When the orbit-roll
valve is being actuated, if the steering circuit goes above the
set pressure of this valve, oil is relieved from this valve. 4
6
2
7
10
B1
R
91
Bucket D=85/50-522 A1
10 Tilt in
9
Tilt out
320 bar d=3,5 250
ccm
/U 12
B2 Cabin
Work equipment hydraulic WA65/WA70-5
175 bar
320 bar
Y140
P T LS
17 B3
A3 T
18+4 bar
Option 18 HDM19 T1
350
ca.1-2 l/min
d=1,0
ca. 9 l/min
4
ca. 11 l/min 96 P
1 bar
2 T P
steering
working hydr.
B1 A B2 G 1"
P1
3
P2
0,03 0,35 0,5
bar bar bar
ca. 30 l Oil
ca. 15 l Air 1
heben senken
11
13
Cabine
BOOM
220 bar P
L R
Work equipment hydraulic WA80-5
d=1,0
A1 1 12 350
b2 auskippen (rot) 4
320 bar einkippen (blau)
a2 d=0,6
B2
d=3,5 d=1,0
A2 2
320 bar
11 9 b3 zu (weiß) 5
auf (braun)
links a3 250-125 ccm/U
heben senken B3
185 bar
A3 T
18+4 bar 6 P T
T1
P T LS
0,16 l
20 bar
21 14
BUCKET
10
Travel, steering and work hydraulics
einkippen auskippen
direction
r Rad dyn. = 0,49 m
17 16
ca. 2,4-4,5bar
Z
Work equipment hydraulic WA80-5
15
EF CF
MB
b a SAE 1" (20km/h)
a b SAE 1.1/4" (30km/h) B oben M1
6 A6VM80HA
Ps Fa Fa1 Fe 20 km/h
B left
LS
A6VM160HA
Vg=40ccm/U P
20 km/h 20km/h verschlossen U 30 km/h
Standard P=45kW a
n=2350 U/min Vg=71ccm/U 30km/h
30 km/h
M 25 8
b
Standard: Option: GRA
Vg=8,6 ccm/U
A4VG40DA A4VG40EP 20 km/h
R 30 km/h 30 km/h T G
T1
T2
A right
X1 X2 G S
5 Fs
MA
d=1,0 P
18
T P
1 bar Standard
steering 2 4
working hydr.
(28L)
(35L)
B1 A B2
P1
pilot valve
3 P2 WA80 (K18)
0,5 2,0 (20 + 30 km/h)
0,03 0,35 bar bar M16x1,5(10L)
bar bar
1
STRUCTURE AND FUNCTION
PPC-Valve
U3
U2
U5
U6
U4
U1
T
P
P
2mm
0.8
mm
0.8
mm
0.8
mm
0.6
mm
U6 U5
U1 U3 U2 U4
15FX 031A
U1. Connection boom lower/float - 65/110 mm stroke U4. Connection bucket dump - 69 mm stroke
with detent U5. Connection 3rd control unit - 35/50 mm stroke
U2. Connection bucket tilt back - 68 mm stroke with detent
U3. Connection boom raise - 70 mm stroke U6. Connection 3rd control unit - 32/60 mm stroke
Operation of PPC-valve
Function
• The PPC-valve controls the oil comming from the feed
pump. Depending on how the PPC-valve lever is moved, oil
is sent to the servo face of one or other of the main control
valve spools.
The oil pressure acts on this spool face and moves the
spool.
Operation
• With the engine running the operating lever is in the neutral
position. The PPC system is supplied with oil from the vari-
able displacement drive feed pump.
If the steering is not used, the complete oil flow is sent to the
working hydraulic system. It flows through the main control
valve to the tank.
All pilot control lines between main and pilot control valve
are connected to the oil return line.
Function
• The servo pressure regulating valve is in the drive pump.
Apart from limiting the drive system feed pressure it also lim-
its the PPC servo pressure.If the PPC valve is not used the
servo pressure regulating valve protects the PPC and the
drive feed pressure system.
Operation
• The regulating valve is mounted in the end housing of the
variable displacement drive pump. 1 2
When the oil pressure rises above the spring (2) preset P sp
pressure, the valve piston (3) compresses the spring and
the seat lifts. the valve piston moves to the left and the oil R
can release to the tank.
Press slowly the multi-function lever into position ‘’P’’. The work
unit is lowered.
3
1
2
PB2 PB3
PB1
AUX
P T1 T2
BUCKET
1
0 1
2
4
0
2 BOOM
1 1 1
0 0 0
2 2 2
4
220 bar
VS
B1 A1 B2 A2 B3 A3
1. Data plate .
2. Main relief valve .
3. Shock and anticavitation valve
Tightening torque
Pressures
Tightening torque
Pressures
Dump cylinder
Dimensions
Tightening torque
Pressures
Steering cylinder
Dimensions
Tightening torque
Pressures
Quick-coupler
Function
• The standard machine is equipped with a quick-coupler and
the 3. control circuit for additional device. The locking of ad-
ditional device, for example claw bucket or forklift ensures
by hydraulic.
Monitor display
Rear windscreen
Display When switched on Display lightens up.
heater
Turning lights
When switched on Display lightens up.
(left - right)
Analogue display
Display lightens up and shows the
Fuel level Beam display
current fuel level.
Brake oil level When the level is too low Display lightens up.
Sensors
Sensor detection item Sensor method When normal When abnormal
Engine coolant temperature Resistance 25°C (42.7 kΩ) 106°C (3.157 kΩ)
1 2 3 4 5 6
1. Plug
2. Contact ring
3. Contact
4. Diaphragm
5. Spring
6. Terminal
Function
• This sensor is installed to the engine block and the dia-
phragm (4) detects the oil pressure. If the pressure goes be-
low the specified pressure, the switch is turned ON.
Structure of circuit
This makes the monitor flash to warn of the abnormality. At
the same time the alarm buzzer is actuated to warn of the
abnormality.
1. Connector
2. Guide
3. Tube
4. IFloat
6
5. Bracket 7
6. Upper plate 2
3 4
Function
• The fuel level sensor is mounted and secured with the upper
plate (7) in the top of the tank. The float (4) moves up and
down according to the fuel level.
1. Connector
2. Plug
3. Thermistor
Function
• This sensor is installed to the engine cylinder block. The
change in the temperature changes the resistance of the
thermistor, and a signal is sent to the monitor to display the
temperature.
1. Contacts
2. Screw cap
3. Float
4. Brake pipe connection
5. Mounting
Function
• The sender unit is mounted in the screw cap. When the oil
level falls under a minimum the float sinks down until the
switch contacts close (ON position).
This lights the warning lamp to inform the driver that the
brake oil level is low.
Structure of circuit
Ribbon heater
Function Operation
Electrical ribbon Current supply ON
heater (pin 15)
OFF
Start signal ON
(pin 50a)
OFF
Preheat/warning light ON
OFF
t 30s
30
20
10
0
-25 -20 -15 -10 -5 0 T (°C)
Ambient temperature
Connectors
Fuses
F Fuse
Fuses
1 2 3
Starter switch, shut off Gear, solenids, work- Solenoids ALS, mag-
1 10 A 1 10 A 1 10 A
solenoid ing hydraulic net oil dedent
Socket (cigarette light-
2 10 A 2 Flashing light 10 A 2 Air condition 25 A
er)
Interior light, radio Radio,, magnet valve,
3 10 A 3 Main monitor 10 A 3 10 A
memory cooler
Hazard warning flush- Rotation beacon,
4 10 A 4 Working light 20 A 4 10 A
er driving light
Position light left, li- Back up alarm, slip
5 Wash/wipe front/rear 20 A 5 10 A 5 10 A
cence light differential
6 Brake light, horn 10 A 6 Position light right 10 A 6 Air suspension seat 10 A
Blower fan, fresh air/ Head light, high Quick coupler,
7 20 A 7 10 A 7 10 A
heater beam sweeper
Central lubrication,
8 Heater, rear window 20 A 8 Head light, low beam 10 A 8 10 A
speed control
Relays
K 376 K 385
Differential lock Backup alarm K 56.1 Low beam
(option) (option)
K 296
Air condition K 373.1 Parking brake forward K 56.2 High beam
(option)
K 235 Driving range K 373.2 Parking brake reverse K 67 Flasher
KF K 314
Speed control forward K 167 Timer 0.8 sec. Switch frequency ALS
(option) (option)
KR B 335 K 180
Speed control reverse Additional buzzer Blower engine cooler
(option) (option) (option)
Engine room
Slow-blow fuses
Relays
Electrical diagrams
See section 90 for:
Introduction
The air conditioning systems of our wheel loaders are filled with
the environmentally friendly coolant R134a (tetrafluorethane).
General
• Liquid cooling gas absorbs heat when it turns into gas.
• When the gas turns into liquid gas the heat is dissipated.
• The air conditioner does not produce cold air, it takes the
temperature from the surrounding warm air and dissipates it.
Physical principal
• Physically, heat moves from a warm element towards a cold
element. When this occurs, the fast moving molecules in the
warm element transfer a part of their energy to the slow
moving molecules in the cold element. This causes the fluid
used in the air conditioner to change form. Individual atoms,
which make up the molecules, change their position. When
this happens the fluid changes from gas to liquid.
Boiling point (at 1,013 bar) °C -26.5 • Does not decompose structural materials
Function
The coolant passes through the filter dryer (4) and the pres-
sure switch (5) at the entrance to the vaporizer (8) in this
state. The coolant is filtered and dried in the filter dryer (4). It
is also a compensation tank at the same time.
Outside air is fed through the vaporizer (8) by the fresh air
fan. While passing through the vaporizer (8) , the warmth it
contains is extracted from the outside air before it flows
through the air vents into the operator's cab.
The condenser
With a cooling system, warmth at a place where it is not required
is transported to another place where the warmth absorbed by
the vaporizer is fed on to the condenser. In the condenser, the
gaseous coolant is cooled and liquefied. The warmth removed
during liquefying is dissipated into the air by the condenser.
1st zone:
The gaseous coolant is cooled to condensation temperature by
dissipation of warmth (pre-cooling zone).
2nd zone:
The coolant transcends into liquid state by dissipation of the
condensation heat at a constant temperature (condensation
zone).
3rd zone:
The liquid coolant is cooled to below the condensation tempera-
ture, i.e. it is overcooled (overcooling zone).
The vaporizer
Liquid coolant is sprayed into the vaporizer and converted to a
gaseous state. During this process, the coolant boils in the va-
porizer. The temperature of the coolant can fall well below the
freezing point during boiling. The coolant adopts a very similar
behaviour to boiling water in the vaporizer. The warmth which
the coolant requires to evaporate is withdrawn from its environ-
ment. At the end of the vaporizing process, the coolant emerges
as steam. The actual vaporizer has been lengthened in order to
allow any liquid bubbles which may possibly have been carried
along as a result of the turbulence time to evaporate as well.
This extension is called the after-vaporizer.
Vaporized
overheated
coolant
Injector nozzle
Liquid
coolant
+25°C
The drying agent cannot absorb more than approx. 6-12 g mois-
ture. For this reason, the inlet and outlet have to be sealed tight Outlet
with plugs whenever the filter dryer is removed.
Inlet
When installing the air conditioning unit in the vehicle, install all
other parts and pipelines first before removing the plugs and
mounting the filter dryer. Attention must be paid that the inlet and
outlet are not confused. If the inlet and the outlet have the same
form, the connection marked "IN" or with an arrow pointing in the
direction of the housing has to be connected to the condenser
side. If connected the other way round, gaseous coolant flows
into the expansion valve which results in a considerable drop in
the coolant performance of the system
Condenser/blower unit
The condenser/blower unit is fixed behind the Cabine. 1 1 2
3. Remove the 6 screws (1) on the left and right hand side .
Heater/air conditioner
The heater/air conditioner is located below the cab's windshield,
behind the front cover.
Compressor
The compressor is located in the engine compartment below the
generator.
In the case of all types of coolant except for RI 1 and R113, the
main risk is that they will displace the oxygen in the air which is
necessary for breathing (risk of suffocation).
Exhaust system!
Opening windows and doors may not be sufficient, that means
an exhaust system must be installed at the point of exit if possi-
ble or close to the floor.
Do not smoke!
Coolants can decompose in the heat of a cigarette. The sub-
stances thus produced are toxic and should not be breathed in.
First aid
1. In the event of contact with the eyes or mucous membranes,
rinse out immediately with plenty of running water and con-
sult an eye specialist.
2. In the event of contact with the skin, remove wet clothing im-
mediately and rinse affected area of skin with plenty of wa-
ter.
NOTE
Only operate the air-conditioning with the engine running.
NOTE
Run the air-conditioning for at least 10 minutes every month irre-
spective of season. This prevents the compressor shaft seal from
drying out.
2. Turn rotary switch (1) for fan to position 4 (the fan has to
run).
4. Press the switch (3) for the air conditioning. The air condi-
tioning system is now switched on and the control lamp in 3
the switch shines blue. The greatest cooling effect is
1 2
achieved with this setting, particularly if the engine is run-
ning at high revs. As soon as the required temperature has
been reached, turn the blowers down by one stage and car-
ry out any further adjustment of the temperature using the
temperature control. The lowest blower setting can be used
if only a low cooling effect is required.
• You can direct the air ventilation nozzles onto the front
windshield and onto the side windows.
Maintenance timetable
Replace filter dryer, suck off coolant, dispose in an environmentally safe manner and fill the system with new coolant.
Maintenance instructions
• Always disconnect the battery if parts of the air conditioning
system are to be removed.
Regular maintenance
Check the air-conditioning system twice a year, in spring and au-
tumn.
1. Compressor
2. Fixing screw 2
3. Cover for Tension Pulley
1
2
3
NOTE
The coolant must flow through the filter dryer's inspection glass
free of bubbles with the engine running and air conditioner at
maximum output (max. blower setting, top idling speed, setting
"cold").
NOTE
If the filter fleece is to dirty it must be replaced.
3. Clean the filter in warm water (30 - 40°C) which has had a
little household cleaning solvent added to it.
5. Insert dried filter fleece (2) back into the heater unit (3).
1
6. Switch on the blower and check the air flow at the air outlet
nozzles.
7. If the air flow is still too weak the filter fleece must be re-
placed.
3
8. Screw front cover (1) back on.
For this reason, only a few instructions are provided here for fill-
ing the air conditioning systems installed in WA-5 models.
Filling
• Set prescribed quantity on fill unit or weigh.
glass
• Commence filling. pressure switch
OUT
• Start engine.
IN
• Check on inspection glass of filter dryer.
NOTE filter-
The filling is OK when the coolant flows without bubbles. See dryer
chapter 10 STRUCTURE AND FUNCTION "Checking coolant
level" on page 10-84.
WA65-5 1200 g
WA65-5 Parallel Lift 1200 g
WA70-5 1200 g
WA80-5 1200g
Evacuation
• Connect ball valves
Vacuum test
• Check the vacuum meter after 10 minutes for pressure in-
crease
• Repair leaks
• No pressure rise:
• Fill system
IN
filter-
dryer
Temperature of high High pressure pipe is hot. Low High pressure pipe is warm. Low Almost no difference in temperature
and low pressures pressure pipe is cold. Clear differ- pressure pipe is cold. Little differ- between high and low pressure
pipes ence in temperature. ence in temperature. pipes.
Sight glass Almost transparent. All bubbles Bubbles are always visible. Some- Opaque substance is visible in the
disappear if the engine speed is times becomes transparent, or fluid.
increased or reduced. white bubbles appear.
Pipe connections Properly connected. Some parts contaminated with oil. Some parts heavily stained with oil.
There may be a leak somewhere. Almost all coolant has leaked out.
General conditions of Coolant level correct, no abnor-
Call service repair shop for inspec- Contact service repair shop immedi-
cooler malities. Ready for use.
tion. ately.
After the oil has flown out through the line, drain off any re-
sidual oil at the drain outlet by turning several times by hand.
3. After the oil has flown out through the line, drain off any re-
sidual oil at the drain outlet by turning several times by hand.
M A = 13 - 15 Nm
• Remove compressor
• Install compressor
Exchange of compressor
• Drain off coolant and dispose it in accordance with regula-
tions.
. 2
NOTE
The new compressor is filled with 180 cm³ PAG oil and nitrogen
gas (N 2).
Service operations
Fit the nuts and unions tightly against the base of the companion
pieces, then hand tighten the nut as much as possible to prevent
cross-threading.
right wrong
defect
part
• Always use a back-up wrench and tighten fittings to the Seal cone
specified torque. The torque wrench should be used on the
fitting which is being tightened.
Troubleshooting
Checks prior to trouble shooting:
• Check condenser
• Compressor clutch OK
• Air temperature OK
Bad smell coming from air conditioning • Check that the condensation drain hose
• Condensation not draining away
system is not blocked and is correctly laid.
1. The standard values in the table are the values for a new
machine and are given as reference values for the time
when the machine is shipped from the factory. These val-
ues should be used as a guide when estimating wear and
tear after the machine has been operated, and when carry-
ing out repairs.
Max. 120
Injection static timing Before top dead center position ° (degree) 3.5 –
Permissible
Cat. Item Measurement conditions Unit Standard value
value
2580 - 2650 –
stall range RPM
Hydrostatic and hydraulic stall • Hydraulic oil temperature: 50 - 60°C 2460 - 2530 –
N 5.6 - 16.2
Operating force –
(kg) (0.6 - 1.65)
α1
Accelerator pedal
Operating angle
α1 α2
° (degree) 40 –
–
α2
24
• Engine stopped
Play mm 0 - 40 –
• Machine facing straight to front
Steering wheel
N 8.9 - 9.8
Operating force –
(kg) (0.9 - 1.0)
Permissible
Cat. Item Measurement conditions Unit Standard value
value
Brake
Operating force
Raise - Lower
mm 65 70
Tilt - Dump
Main control valve
Servo pressure 26 - 30 –
s 0.7 - 0.9
end • Orbit-roll: neutral
• Empty bucket
Bucket hori-
zontal
Permissible
Cat. Item Measurement conditions Unit Standard value
value
2580 - 2650 –
stall range rpm
Hydrostatic and hydraulic stall • Hydraulic oil temperature: 50 - 60°C 2460 - 2530 –
N 5.6 - 16.2
Operating force –
(kg) (0.6 - 1.7)
α1
Accelerator pedal
Operating angle
α1 α2 40
° (degree)
–
α2 24
• Engine stopped
Play mm 0 - 40 –
• Machine facing straight to front
Steering wheel
N 8.9 - 9.8 –
Operating force
(kg) (0.9 - 1.0) –
Permissible
Cat. Item Measurement conditions Unit Standard value
value
Brake
Operating force
Raise - Lower
mm 65 70
Tilt - Dump
Main control valve
s 0.8
end • Orbit-roll: neutral
• Empty bucket
Bucket hori-
zontal
Permissible
Cat. Item Measurement conditions Unit Standard value
value
2450 - 2550 –
stall range rpm
Hydrostatic and hydraulic stall • Hydraulic oil temperature: 50 - 60°C 2430 - 2500 –
N 5.6 - 16.2
Operating force –
(kg) (0.6 - 1.7)
α1
Accelerator pedal
Operating angle
α1 α2 40 –
° (degree)
α2 24 –
• Engine stopped
Play mm 0 - 40 –
• Machine facing straight to front
Steering wheel
N 10.6
Operating force –
(kg) (1.6)
Permissible
Cat. Item Measurement conditions Unit Standard value
value
Brake
Operating force
Raise - Lower
N 26.5
Tilt - Dump
• Engine speed: low idle RPM
• Hydraulic oil temperature: 50 - 60°C
• Operating force up to point of
pressure
Boom
Raise - Lower
mm 85
Tilt - Dump
Main control valve
Servo pressure 28 - 30
s 0.9
end • Orbit-roll: neutral
• Empty bucket
Bucket hori-
zontal
Check continuity
normal.
Start engine.
Engine oil pressure
Oil pressure above 0.7 bar no continuity Disconnect connec-
sensor
tors.
Oil pressure below 0.3 bar continuity
Measure resistance If the condition is as shown in the table below, the sensor is
normal.
normal.
Full open
Turn starting switch
Brake oil reservoir
OFF.
Empty continuity
normal.
1 Cooling water °C 70 - 80
10 Servo pressure (low idle speed and test temperature) bar min. 26
14 Low idle speed, left and right (end to end) 4.4 - 5.5
15 Rated idle speed, left and right (end to end) 2,5 - 3,2
20 Lower time with empty bucket to ground in float position 4,1 - 4,3
All pressures and timings have to be measured at working temperature of the machine.
Chassis-no.: Customer:
Test temperatures Nominal Actual
1 Cooling water °C 70 - 80
10 Servo pressure (low idle speed and test temperature) bar min. 26
14 Low idle speed, left and right (end to end) 4,0 - 5,0
15 Rated idle speed, left and right (end to end) 2,7 - 3,4
20 Lower time with empty bucket to ground in float position 4,1 - 4,3
All pressures and timings have to be measured at working temperature of the machine.
Chassis-no.: Customer:
Test temperatures Nominal Actual
1 Cooling water °C 70 - 80
10 Servo pressure (low idle speed and test temperature) bar min. 26
14 Low idle speed, left and right (end to end) 4,0 - 5,0
15 Rated idle speed, left and right (end to end) 2,2 - 2,9
20 Lower time with empty bucket to ground in float position 4,1 - 4,3
All pressures and timings have to be measured at working temperature of the machine.
1. Unscrew the three bolts (1) and remove the cylinder head
cover (2).
1.4
10
5. Adjust the valve clearances of the four valves (1i), (1e), (2e)
and (3i) one after the other as follows:
b. Insert the feeler gauge (c) between the valve stem (d)
and the rocker arm (e).
0.35 mm 0.50 mm
0.014 in 0.020 in
Nm ft-lb
MIN 39 29
MAX 49 36
7. Adjust the valve clearances for the four valves (2i), (3e), (4i)
and (4e) one after the other as described above.
8. Fasten the cylinder head cover with the three bolts (1).
★ Testing conditions
2. Turn the engine with the starter and the injection pump to
stop position before fitting the adapter (P/N: 795-502-1370).
4. Using the procedure in step 2, turn the engine over using the Adapter P/N: 795-502-1370
starter motor. Note the max. stabile pressure registered on
the compression tester.
4. Connect the injection valve (1) to the high pressure pipe (2)
of the nozzle tester (3).
5. Operate the lever (4) slowly and read the pressure at the
moment when the injection from the nozzle starts.
Tightening torque:
39.2 - 44.1 Nm
2. Confirm that the mark "C" can be seen on the idler gear. If
the mark "C" cannot be seen, rotate the crankshaft one com-
plete revolution and confirm that "C" can be seen.
3. Align the match mark "C" on the injection pump gear with
the match mark "C" on the idler gear during installation for
correct alignment.
4. Align the stamped line "a" on the injection pump with the
stamped line "b" on the timing gear case during installation
for correct alignment.
1.4
10
3. Install the dial gauge into the distributor head, so that the
stylus end of the dial gauge contacts the plunger head.
9. Remove the dial gauge. Install the distributor head bolt and
a new copper washer into the injection pump. Tighten the
bolt.
14 - 20 Nm
10. Stamp a match mark on the injection pump and the timing
gear case.
V-belt tension
1. Press the fan belt at position (1) between the crankshaft pul-
ley (2) and the alternator pulley (3) with a finger (59 N, 6 kg).
Engine RPM
★ Testing conditions
2. Note the low idle RPM, when the engine has reached work-
ing temperature.
3. If the low idle RPM is not correct, screw the adjusting screw
(1) to set the low idle RPM.
4. Slowly rise the RPM (no load) and note the high idle RPM.
5. If the high idle RPM is not correct, screw the adjusting screw
(2) to set the high idle RPM.
★ Testing conditions
Testing
1. Fit the RPM tester to the engine and take the RPM tester’s
display into the cab.
Adjusting
★ Testing conditions
1. Fit the RPM tester to the engine and take the RPM tester’s
display into the cab.
2. Block the drive train (1). Make sure that the wheels cannot
slip during the test.
★ Make sure that the correct low and high idle speeds are
adjusted and that the oil pressures is in between the set
limits. If these are not correct, check the connections
and the linkages.
3. Select FORWARD.
4. Press the brake pedal and slowly rise the engine RPM to
max.
★ Make sure that the wheels do not turn during the test.
3. Select FORWARD.
4. Press the brake pedal and slowly rise the engine RPM to
max.
★ Make sure that the wheels do not turn during the test.
5. Move the boom lift hydraulic control lever and raise the
boom until the main pressure relief valve opens. The boom
is held in the upper stop position.
★ Testing conditions
Testing
1. Connect a pressure testing gauge (60 bar) to the testing
point (1).
★ Make sure that the correct low and high idle speeds are
adjusted.
★ Testing conditions
Testing
1. Connect a pressure test gauge (testing range up to 600 bar)
to the test connector (1) for FORWARD.
2. Block the drive train so that the machine cannot move for-
ward. Make sure that the wheels cannot slip during the test.
4. Run the engine to max. RPM and note the pressure shown
on the pressure gauge.
6. Block the drive train so that the machine cannot move back-
wards. Make sure that the wheels cannot slip during the
test.
8. Run the engine to max. RPM and note the pressure shown
on the pressure gauge.
Adjustment
★ Testing conditions
Testing
1. Connect a pressure testing gauge (1) (testing range up to
250 bar) to the test point (2).
★ Do not hold the pressure for more than 20 sec. Use the
control lever by quick handling.
Adjusting
★ Testing conditions
Testing
1. Fit the steering safety rod in the articulation joint so that the WA65-5 / WA70-5
machine can not be steered.
P T LS
4. Turn the steering wheel to the right until the end position is P
LS
250-125 ccm/U
185 bar
P T LS
POS.2
Work-
hydraulic
POS.1 EF CF
LS
P
25 8
Adjusting
1. Adjust the steering oil pressure with the pressure limiting WA65-5 / WA70-5
valve (5) (primary side) and with the shock valve (6) (sec-
ondary side).
WA80-5
Testing
1. Start the engine, raise the bucket approx. 400 mm.
Testing
1. Install a push-pull scale to the steering wheel knob.
Testing
1. Inspect the brake pad (2). Replace it if worn.
WA80-5
WA65-5 / WA70-5
Brake efficiency
★ Testing conditions
Testing
★ Set up a test run and mark the point where you will start to
brake. Brake as soon as you pass this point.
3. Using the correct force, press the brakes when passing the
braking point with 20 km/h.
• Bucket: empty
Testing
1. Start the engine and set the machine straight ahead. Drive
the machine up the 18% gradient.
6. Apply the parking brake, slowly release the foot brake. The
machine should not move.
★ The line is filled with oil. Take care not to spill this oil.
Travel speed
★ Testing conditions
Testing
★ Before starting the test set up the test points "1" and "2" and
measure the exact distance.
3. Drive the machine at max. speed over the complete test run.
4. Start the stop watch when passing point "1" and stop the
stop watch when passing point "2". Formula for testing
machine speed
5. Copy the stopped time (Y) and the driven distance (X) be-
tween point "1" and "2" to the formula given.
x
× 3.6 = km/h
y
★ Repeat the test three times to get an average speed.
100 m
Example: × 3.6 = 20 km/h
18s
Point 2 Point 1
Test run distance X in meters Run-up to test
Comments
Chapter 30 contains descriptions, illustrations and diagrams,
which may vary according to the type of machine and equipment
variants concerned.
Over and above this, the illustrations and diagrams may also
contain optional extras and auxiliary equipment that are also
available.
NOTE
An illustration representing a particular way of handling some-
thing does not necessarily represent the machine part's actual
state. In other words, parts may be shown that, according to the
assembly instructions, should have been removed beforehand.
Similarly, parts may not be shown that should actually still be
mounted on the machine.
Starter assembly
1. Electrical cables
Remove the two cables (1) and (2) from the starter.
2. Fastening screws
Loosen the two fastening (3) screws and remove the starter.
4 Starter: 4.7 kg
Alternator assembly
1. Electrical connections
Disconnect the two cables (1) and (2).
b. Slacken off the adjusting screw (4) and move the alter-
nator towards the engine.
3. Alternator
Unscrew the alternator fastening screw (1).
4. Thermostat
a. Unplug the thermocouple’s (2) plug-type connector.
5. Lines
Loosen the clamps (3) and (4) from the hoses and remove
the lines from the pump.
7. Mounting
Unscrew the two fastening screws (7) and (8) and remove
the water pump. 10
4 Water pump: 7.4 kg 9
1. Preliminary work
Open the engine cover and secure it against falling down by
means of a support rod.
2. Engine cover
a. Remove two fastening screws (1) on both sides of the
mounting.
4 Engine cover: 34 kg
Screws: 18 Nm
Screws: 18 Nm
Engine assembly
1. Cover plates
a. Unscrew the two screws (1) and remove the cover plate
from the battery compartment.
6 Coolant: 9.1 l
5. Electrical connections
★ Mark the cables in order to prevent flaws when recon-
necting.
Disconnect all electrical cables from the engine (see the po-
sitions marked „e“).
6. Air cleaner
a. Loosen the clip (1) on the intake hose and a further clip
(2) on the intake manifold.
a. Disconnect the two fuel supply lines (5) from the fuel fil-
ter.
b. Unscrew the two screws (6) and put the holder including
the relais box and the fuel filter aside.
c. Unscrew the fuel return line (7) from the fuel pump.
8. Brackets
a. Unscrew the screws of the brackets (8) and (9) from the
engine.
★ Mark the hydraulic lines to make sure that they don't get
mixed up when being reconnected.
The tasks described below are to be carried out before the new
engine is installed, as some of the parts concerned are not part
of the replacement engine's delivery specification. In other
words, certain assemblies and parts that were mounted on the
old engine will be required when installing the new engine.
13. Clutch
See chapter 30 DISASSEMBLY AND ASSEMBLY "Removal
of clutch assembly" on page 30-22.
18
• Replace the contact lugs that were delivered with the sup-
port (1).
Screws: 45 Nm
1
Screws: 280 Nm
Screws: 280 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK .
• Raise the lifting arm to its full extension upwards and tilt
the bucket fully.
• Let the engine continue to run and close the filler pipe
on the hydraulic tank.
• Lower the lifting arm to the ground and switch the en-
gine off.
Clutch assembly
1. Clutch
a. Unscrew the clutch cover (1) from the flywheel housing. 3
4
b. Unscrew the clutch flange (2) from the flywheel.
c. Unscrew the screw (3) to remove the hub (4) from the
pump.
2
• Clean the fastening screws for the flange and apply adhe-
sive to the screws.
Screws: 49 Nm
Screws: 37 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
Radiator assembly
6 Coolant: 9.1 l
6 Hydraulic oil: 45 l
3. Wiper
Disconnect all cables and hoses from the two wiper washer
containers (1).
4. Hydraulic hoses
a. Disconnect the two hydraulic hoses at the positions (2)
and (3) from the fan drive.
5. Coolant hoses 4
a. Disconnect the hose (7) from the drain cock. 6
b. Disconnect the radiator's two hose lines (5) and (6).
6. Mounting
a. Suspend the radiator by means of a hoist.
★ Make sure that all the lines and hoses to the radiator
have been disconnected.
4 Radiator assembly: 41 kg
• Make sure that the fan is not damaged in any way when re-
placing the radiator.
Screws: 115 Nm
6 Coolant: 9.1 l
• Fill the hydraulic tank with oil again and check the hydraulic
oil level.
6 Hydraulic oil: 45 l
Fan assembly
1. Radiator
Unscrew the four fastening screws (1) to get access to the
back side of the fan.
2. Fan
Unscrew the nut (2) from the hydraulic engine and remove
the fan.
Screw: 35 - 45 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
1. Hydraulic lines
★ Mark the hydraulic lines to make sure that they don't get
mixed up when being reconnected.
a. Disconnect the hydraulic lines (1) and (2) from the inch
brake valve.
2. Brake pedal
Release the threaded rod's fork head (4) from the brake
pedal.
Screws: 35 Nm
• Check the oil level of the brake and top up with oil if neces-
sary. See Operation Manual: SERVICE PROCEDURE,
EVERY 50 HOURS SERVICE, INCH BRAKE - CHECKING
OIL LEVEL, TOPPING UP OIL.
1. Hydraulic lines
★ Mark the three hydraulic lines (1), (2) and (3) to make
sure that they don't get mixed up when being reconnect-
ed.
Disconnect the hydraulic lines (1), (2) and (3) from the prior-
ity valve.
2. Mounting
Unscrew the four fastening bolts (4) and remove the priority
valve.
1
★ Take care not to loose the O-ring (5).
2
5
3
4
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
Orbit-roll-valve assembly
1. Cover
Remove the six fastening screws (1) and remove the cab's
centre cover.
2. Hydraulic lines
★ Mark the hydraulic lines to make sure that they don't get 3
mixed up when being reconnected. 2
Unscrew all five hydraulic lines (2) to (6) from the orbit-roll- 6
valve.
3. Orbit-roll-valve
Remove the four fastening screws (7) and withdraw the
orbit-roll-valve downwards and away from the steering
column's gearing.
Screws: 30 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
Counterweight assembly
1. Cover plates
a. Unscrew the two screws (1) and remove the cover plate
from the battery compartment.
2. Rear lights
Disconnect the electrical plug-type connectors XM6 on the
left-hand side (2) and XM7 on the right-hand side (3).
3. Counterweight
a. Screw the two eye bolts (M20) into the threaded holes
(4) from above into the counterweight.
4 Counterweight: 615 kg
Screws: 560 Nm
1. Cladding
a. Remove the safety lock lever in the operator’s cab.
2. Hydraulic lines
★ Mark the hydraulic lines to make sure that they don't get
mixed up when being reconnected.
3. Electrical connection
Disconnect the actuater's plug-type connector (4).
4. Control valve
Remove the three fastening screws (5), incline the control
valve towards the front of the wheel loader and lift the con-
trol valve upwards out of its compartment.
4 Control valve: 15 kg
Screws: 14 Nm
Screws: 14 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
Screws: 35 Nm
1. Compartment
Unscrew the four srews and open the compartment in the
front frame.
2. Hydraulic lines
DANGER of crushing!
When you disconnect the hydraulic lines, the boom will
lower. Make sure the boom is secured against lowering by
suspending it to a hoist before you disconnect the hydrau-
lic lines.
★ Mark the hydraulic lines to make sure that they don't get
mixed up when being reconnected.
Unscrew all hydraulic lines (14 in all) from the main control
valve.
Screws: 35 Nm
Hydraulic Hydraulic
line color Operation line color Operation
indication indication
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
1. Cover
Unscrew the screws (1) and remove the cover.
2. Electrical connections
Disconnect the pilot valve's plug-type connector (2).
3. Hydraulic lines
★ Mark the hydraulic lines to make sure that they don't get
mixed up when being reconnected.
Unscrew all the hydraulic lines (3) (8 in all) from the pilot
valve.
4. Pilot valve
a. Unscrew the four screws (2).
Screws: 35 Nm
Screws: 35 Nm
Hydraulic Hydraulic
line color Operation line color Operation
indication indication
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
Monitor assembly
1. Monitor housing
a. Remove the steering wheel.
d. Unscrew the bolt (3) from the handle (5) and remove the
bolt (3), the spring (4) and the handle (5).
2. Electrical connections
Disconnect the three plugs (12).
3. Monitor
Unscrew the four fastening screws (11) and take the monitor
out of its housing.
• When inserting the positioner (10) prevent any part from fall-
ing into the steering column.
• The three discs (9, see previous page) must be inserted be-
tween the two parts (15) and (16).
1. Articulated joint
★ Support the articulated joint and mark its installation po-
sition before loosening the bolted connections.
4 Articulated joint: 11 kg
• When reinstalling the articulated joint make sure that the in-
stallation position lines up with the markings.
Screws: 35 Nm
6 Hydraulic oil: 45 l
2. Electrical connections
★ Mark the connectors in order to prevent flaws when re-
connecting.
3. Hydraulic lines
★ Mark the hydraulic lines to make sure that they don't get
mixed up when being reconnected.
a. Disconnect the two travel hydraulic lines (2) and (3) from
the pipes.
b. Unscrew the hose line (4) which leads from the hydrau-
lic oil tank to the variable motor.
4. Variable motor 6
a. Support the variable motor by means of a jack and se-
cure the motor against falling to the ground. 4
4 Variable motor: 34 kg 3
2 5
6
Screws: 115 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
• Raise the lifting arm to its full extension upwards and tilt
the bucket fully.
• Let the engine continue to run and close the filler pipe
on the hydraulic tank.
• Lower the lifting arm to the ground and switch then en-
gine off.
b. Raise the machine so that the rear wheels are lifted ap-
proximately 15 cm off the ground.
2. Wheels
★ Make sure that the wheels cannot tip over when being
removed.
b. Two people should then remove the wheel from the rear
axle.
4 Wheel: 60 - 90 kg
3. Variable motor
a. Support the variable motor and secure it against falling
to the ground.
4 Variable motor: 34 kg
6. Axles
a. Slide the jack under the rear axle at the centre and
place a block of hardwood between the jack and the ax-
le. Make sure that the jack is tightly pressed up against
the axle.
c. Lower the rear axle together with the transfer gear slow-
ly to the ground and then withdraw the entire axle from
underneath the machine.
Screws: 800 Nm
Screws: 115 Nm
2. Wheels
★ Make sure that the wheel cannot tip over when being re-
moved.
b. Two people should then remove the wheel from the rear
axle.
4 Wheel: 60 - 90 kg
3. Axles
a. Slide the jack under the front axle at the centre and
place a block of hardwood between the jack and the ax-
le. Make sure that the jack is tightly pressed up against
the axle.
Front axle
Disassembly
1. Unscrew the bolts (4).
2. Remove the brake caliper (5) from the support (10) and from
the brake disc (7).
NOTE
This is a destructive operation for the seal ring.
Assembly
1. Assemble the seal ring (12) into the brake caliper support
(10) with special tool CA715476.
5. Assemble the brake caliper support (10) with the bolts (9).
50 Nm
10. Assemble the brake caliper (5) on the support (10) with the
fastening bolts (9).
169 Nm
13. Check the brake caliper correct running blowing 5 bar pres-
sure air into the hole (a1).
Warning: never apply the brake lever (a2) during brake cali-
per assembly.
Brake caliper
All checking the disassembly and assembly instructions have
been taken from the brake caliper manufacturer manual of CAR-
RARO. KOMATSU is not responsible for any change made by
the manufacturer.
Differential position
Compensation of parking brake auto-adjustment basic principle
Caliper removal
1. Disconnect the electrical pad wear indicator leads.
3. Press down on the calliper and drift out the retaining pin.
Disassembly
1. Remove the dust cover protecting the parking brake assem-
bly.
6. Screw the extractor bolt (a2). Remove the cam shaft (2).
10. Remove the threaded rod (4), the helical spring (5) and the
cover (7).
11. Remove the O-ring (6) from the threaded rod (4).
12. Clean the caliper body and seal groove, then dry with com-
pressed air.
Assembly
1. Apply grease to the various parts of the assembly, and most
particularly to the bore receiving the threaded rod.
3. Assemble the threaded rod (4), the helical spring (5) and the
cover (7) on the brake caliper.
5. Place the threaded rod (4) and the cover (6) as shown in fig-
ure to allow the cam shaft (2) insertion.
13. Lock the cam shaft (2) with the snap ring (1).
Caliper reassembly
1. Dip the new piston seal into unused LHM fluid, then in-
sert it into the groove in the cylinder body.
4. Screw the piston home. Rotate the piston until the slot
is perpendicular to the yoke when the calliper is locked
in position, i.e. with the air vent and bleedscrew in line
with each other.
6. Slide the calliper onto the guide sleeve (3), then insert
the lips of the protective covers into the grooves at each
end of the sleeve.
Pad replacement
1. Disconnect the electrical pad wear indicator leads.
3. Press down on the calliper and drift out the retaining pin
(2).
7. Fit the new pads, making sure to place the pad with the
lug on the piston side.
8. Fit the new anti-clog pin (3) supplied with the Service
Kit.
9. Rotate the calliper and check that the lug on the pad fits
correctly into the slot in the piston.
12. Feed the pad wear indicator leads through the anti-clog
pin.
Disassembly
1. Drain the oil completely from the axle beam.
2. Remove the short half shaft (1) from the wheel shaft.
7. Remove the brake disc (13) and the brake disc carrier (15).
9. Unscrew and remove the screw of the self-adjust kit (11) and
of the brake mechanism return kit (12).
11. Check the operating and wear conditions of the kit compo-
nents (11) and (12).
12. In order to extract the brake piston (8), use the hydraulic
connection applying the lowest oil or air pressure necessary
to dislodge the piston.
13. Collect the quadrings (7) and (9) from the brake piston (8).
14. Remove the three split pins (9) of the brake piston with a
hammer and a punch.
16. Turn the wheel shaft. Position the wheel shaft on a flat sur-
face and remove the bushing (5) using a suitable drift and a
hammer.
17. Remove the long half shaft (18) from the axle housing (17).
Assembly
1. Force the bushing (5) into the wheel shaft with the special
tool CA715649 and a hammer.
2. Turn the wheel shaft. Assemble the seal ring (6) into the
wheel shaft with the special tool CA715025 and a hammer.
3. Assemble the split pin of the self-adjust kit (11) in the brake
piston, using the special tool CA715752.
9. Collect the components of the self-adjust kit (11) and the pis-
ton return kit (12).
10 Nm
13. Fit the long half shaft (17) into the axle beam (18).
14. Check that the snap ring (16) is already assembled into the
brake disc carrier (15).
Warning: check that the brake disc pin (10) is towards the
bottom (see picture).
NOTE
Check that the dowel pins (10) are in their seats.
18. Position the wheel shaft (2) on the axle housing and tighten
the retaining bolts (19) to the requested torque.
190 Nm
8 - 12 Nm
20. Assemble the short half-shaft (1) into the wheel shaft.
Rear axle
Disassembly
1. Unscrew the fastening screws (1) and remove the cover with
seal ring (2).
NOTE
This is a destructive operation for the seal ring.
NOTE
This is a destructive operation for the seal ring. Remove the
thrust washer (7).
Assembly
1. Apply grease to the thrust washer (7) surface on the axle
beam side. Assemble the thrust washer (7).
2. Heat the bush (9) to 110 - 120 °C then assemble it to the dif-
ferential support.
NOTE
If necessary assemble the bush (9) with a pad and a hammer.
Warning: align the bush hole with the fastening bolt (13)
hole.
6. Assemble the bolt (13) and the nipples (12) and tighten
them to the prescribed torque.
7. Assemble a new seal ring (8) well lubricated into the front
support (14) with the special tool CA715031.
10. Heat the bush (4) to 110 - 120 °C then assemble it to the dif-
ferential support.
NOTE
If necessary assemble the bush (4) with a pad and a hammer.
11. Assemble a new seal ring (3) into the cover (2) with the spe-
cial tool CA715476. Apply prescribed sealant on the cover.
50 Nm
Disassembly
1. Drain the oil completely from the epicyclic reduction gear.
2. Unscrew and remove the two fastening bolts (3) of the plan-
etary carrier (1) with a wrench.
3. Remove the planetary carrier (1) from the wheel hub and
collect the relative O-Ring (4).
Assembly
1. Collect all epicyclic reduction gear parts: the planetary carri-
er (1), the snap ring (10), the thrust washer (9), the planetary 6 8 10
gear (7) with the needle bearings (6) and (8).
9
NOTE
With new planetary gears (7) it is advisable to assemble new nee- 7
dle bearings (6) and (8).
NOTE
Grease well the needle bearings (6) and (8).
3. Insert the needle bearings (6) and (8) in the epicyclic gears
(7).
4. Fit the epicyclic gears (7) to the planetary carrier (1) pins.
5. Insert the thrust washer (9) and the snap rings (10) to the
planetary carrier (1) pins.
25 Nm
10. Fit the oil plug (2) on the planetary carrier (1) and tighten it.
60 Nm
Wheel hub
Disassembly
1. Slide the half-shaft from the axle beam. Unscrew and re-
move the fastening bolts (1) from the wheel carrier group.
3. Remove the wheel carrier (4) together with the ring gear (3).
NOTE
Collect the bearing cone (6).
7. Position the wheel hub (7) on a flat surface and remove the
seal ring (10) with a lever.
NOTE
This is a destructive operation for the seal ring.
8. Remove the bearing cups (6) and (9) using a hammer and a
drive.
10. Remove the bearing cone (9) from the wheel shaft end using
a suitable extractor.
Assembly
The special operation “Set Right“ of the bearings does not re-
quire preload or backlash adjustment. Anyway, before assem-
bling new components check the indicated dimensions.
C C
A = 08.450 - 08.500 mm
A
B = 54.775 - 54.825 mm
C = 23.072 - 23.173 mm B
4. Position the wheel hub (7) on a workbench and force the two
bearing cups (6) and (9) in position with the special tool
CA715026 under a press or with a hammer.
5. Insert the seal ring (10) into the wheel hub with the special
tool CA119143 and a hammer.
10. Preassemble the wheel carrier (4) and the epicyclic ring
gear (3) with the locking ring (5).
3
11. Assemble the wheel carrier group (3), (4) and (5) on the
wheel hub using the two projecting bushes (2) as dowel
pins.
12. Force all hub dowel bushes (2) completely with the special
tool CA715655 and a hammer.
13. Assemble the wheel carrier (4) fastening bolts and tighten to
the requested torque. Assemble the short half-shaft.
Wheel shaft
Disassembly
1. Drain the oil completely from the axle beam.
2. Remove the short half shaft (1) from the wheel shaft.
9. Remove the long half shaft (17) from the axle housing.
11. Remove the sleeve inner snap ring (16) if replacement is re-
quired.
Assembly
1. Force the bushing (5) into the wheel shaft with the special
tool CA715649 and a hammer.
3. Assemble the seal ring (6) into the wheel shaft with the spe-
cial tool CA715025 and a hammer.
5. Assemble the splined sleeve (15) to the long half shaft (17).
6. Insert the long half shaft (17) on the axle beam (18) as in the
picture.
9. Position the wheel shaft (2) on the axle housing and tighten
the retaining bolts (19) to the requested torque.
304 Nm
10. Assemble the short half-shaft (1) into the wheel shaft.
Disassembly
1. Drain the oil completely from the differential.
NOTE
To remove the differential (1), screw two bolts into the threaded
lift-out bores of the differential carrier, then tighten.
3. Loosen and remove the screws (6) to remove the two ring
nut retainers (5). 5
6
5. Mark the area between the ring nuts (3) and (7) and the dif-
ferential carrier (1) as well.
6. Unscrew the adjuster ring nuts (3) and (7) using tools
11
CA119030 (a1) and a wrench.
7 3
7. Loosen and remove the 4 screws (11) and remove the 2 10
half-collars (10).
10. The bearing cups (4) and (8) are removed together with the 13
differential housing. 8
4
Warning: do not invert the bearing cups if they are not go-
ing to be replaced.
Assembly
1. Assemble the bearings cups (4) and (8) on the differential
group (1) with pins and locking differential sleeve, (only for
CA150021).
4
8
1
Warning: do not invert the bearing cups if the bearings are
not replaced.
4. Check that all bushes (9) are in their housings and position 10
both half collars (10) on their seats using the previously
traced reference marks.
9
6. Assemble the adjusting ring nuts (3) and (7) to the differen-
tial support.
7. Tighten both ring nuts (3) and (7) with special tools 7
10. Lock the pinion and move the crown gear alternatively and
note the pinion-ring gear backlash, measured with the com-
parator.
13. Set the bevel gear set backlash by turning adjusting rings
(3.7) with the appropriate tool CA119030.
18. Tighten the bolts (11) of both half collars to the requested
torque.
20. Once all the adjustment operations have been completed, fit
the adjuster ring nut retainers (5) and their respective
screws (6), tightening them to the requested torque.
24. Check that the dowel pins (12) are in their seats.
25. Position the differential carrier (1) on the axle housing and
tighten the retaining bolts (2).
169 Nm
Movements to correct:
3. Collect the piston (13) and the O-rings (14) and (12). 16
12
13
14
15
4. Remove the lock ring (11) preventing the bush (10) from be-
ing pushed out by the spring (9).
9
10
Danger: possible ejection of the bush (10) and spring (9).
11
5. Remove the bush and the spring from the control shaft (3).
6. Remove the bolt (1) and the cover (2) keeping the bush (4)
from being pushed out by the spring (5). 2 1
4
5
6
Danger: possible ejection of the bush (4) and spring (5).
7. Remove the bush, the spring and spacer (6) from the control
shaft (3).
8. Remove the control shaft (3), then collect the lock ring (7)
and the fork (8).
Assembly
1. Place the differential support on a workbench.
2. Assemble the lock ring (11) in the housing at the end of the
control shaft (3).
8
3. Insert the spacer (10) and the spring (9) on the control shaft
(3).
3
4. Insert the shaft in the differential support and in the fork (8),
respecting for each element the shown position.
27.6 Nm
14
15
10. Insert the lock ring (7) on the control shaft (3) from the fork
side by pushing it in the housing with a pipe of suited dimen-
sion.
11. Insert the spacer (6), the spring (5) and the bush (4) on the
control shaft.
13. Assemble the cover (2), pushing the spring (5), with the fas-
tening screws (1).
27.6 Nm
Disassembly
1. Remove the sleeve (13) and pins (11) from the differential
housing (12).
3. Unscrew the fastening bolts (1) and remove the bevel gear
(3).
7. Remove the bearing cones (2) from the half boxes (4 and
4
12) using a standard extractor. 2
2
12
Assembly
1. Assemble the bearing cones (2) on the half housing (3 and
10), using the special tool CA119230 and a hammer. 4 2
12
3. Join the two half boxes, aligning the reference marks made
during disassembly.
6. Apply sealant on the threads and tighten the bolts (1) to the
requested torque.
95 Nm
Disassembly
1. Lock the differential with a clamp. Unscrew the fastening
bolts (1) and remove the bevel gear (2).
Warning: this will make both differential half boxes (4) and
(12) free, so take care not to drop the internal components.
5. Remove the bearings cones (3) and (13) of the half boxes
4
(4) and (12), using two levers or a three-hold extractor.
13
3
12
Assembly
1. Assemble the bearing cones (3) and (13) on the half hous-
ings (4) and (12), using the special tool CA119230 and a 4 3
hammer.
12
13
NOTE
The first disc (7) must be assembled with friction material on the
discs side and the flat surface on the sun gear (8) side.
3. Join the two half boxes, aligning the reference marks made
upon them.
95 Nm
Pinion group
Disassembly
1. Lock the differential carrier in a vice.
2. Unscrew the lock nut (10) using special tools CA119099 and
CA715022
NOTE
This is a destructive operation for the ring nut.
3. Tap the shaft with a soft hammer to remove the bevel pinion
(1).
4. Collect the washer (4) and (6), the collapsible spacer (5), the
bearing cone (8) and the retaining washer (9).
5. Remove the bearing cups (3) and (8) using a driver and a
hammer.
6. To remove the bearing cone (3) of the pinion (1), use a stan-
dard extractor.
7. Collect the bearing cone (3) and the underlying shim (2).
9. The ring nut (10) and the collapsible spacer (5) must be re-
placed when reassembling the unit.
Assembly
1. Fit the bearings cups (3) and (8) using the special tool
CA119225 and a hammer.
10. Select the shim (2) of thickness valve (S) among the range
of available shims.
11. Remove the "false differential box" special tool from the dif-
ferential support (7).
12. Remove the ring nut (10), the "false pinion" and the bearing
cones (3) and (8).
6
13. Insert the chosen shim (2) with the chamfer against the gear 3 5
into the pinion shaft (1). 4
2
14. Force the bearing (3) into the pinion shaft (1) with the spe-
cial tool CA715082 under a press, making sure that it is well
set. 1
1
15. Insert the shims (4) and (6) and the new collapsible spacer
(5).
17. Insert the bevel pinion (1) unit into the differential support
8
housing (7) and the bearing cone (8) into the pinion end, as
shown in the picture.
1
18. Use the special tool CA715179 and a hammer to drive the
bearing (8).
7
19. Insert the ring nut washer (9) and screw a new lock ring nut
(10) on the pinion end.
20. Screw the ring nut (10) in, using the wrench for ring nut
CA119099 and for pinion retainer CA715022.
21. Tighten the ring nut (10) gradually. If the tightening is exces-
sive, the collapsible spacer (5) must be replaced and the
procedure repeated.
24. The adjustment is carried out by increasing the ring nut (10)
torque gradually, being careful not to exceed.
1. Electrical connections
★ Mark the cables in order to ensure that they are not
mixed up when being reconnected.
Disconnect the two connectors (1) and (2) from the sole-
noids.
2. Hydraulic lines
★ Mark the lines in order to ensure that they are not mixed
up when being reconnected.
• Grease the gearing before reinstalling the pump.
Screws: 280 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
• Raise the lifting arm to its full extension upwards and tilt
the bucket fully.
• Let the engine continue to run and close the filler pipe
on the hydraulic tank.
• Lower the lifting arm to the ground and then switch off
the engine.
1. Hydraulic lines
a. Disconnect the two hydraulic lines (1) and (2) from the
hydraulic pump.
b. Remove the two fastening screws (3) and take the hy-
draulic pump off.
Screws: 70 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
1
• Park the machine on level ground and secure it against
rolling away and jack-knifing! Lower the bucket, switch
the engine off and apply the parking brake!
• Depressurise the hydraulic system: loosen the filler/vent
plug a few turns to relieve the pressure in the tank.
1. Hydraulic lines
Remove the locking rings (1) on both sides of the quick-at-
tach coupler system at the connecting block and withdraw
the angular part (2).
2. Rocker arm
Unscrew the locking bolt (3) and remove the bolt from the
rocker arm.
3. Quick-attach coupler
a. Loosen the clamping screws (4) on the quick-attach
coupler's joint rod.
Screws: 70 Nm
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
1. Hydraulic lines
3
★ Mark the hydraulic lines to make sure that they don't get 2 5
mixed up when being reconnected.
2. Lubricant lines 6
Disconnect the lubricant line (2) from the cylinder.
3. Steering cylinder
a. Support the steering cylinder or suspend it from hoisting
gear.
4 Steering cylinder: 16 kg
Screws: 70 Nm
• Greasing
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
1. Hydraulic lines
★ Mark the hydraulic lines (1) to make sure that they don't
get mixed up when being reconnected. 1
Disconnect the hydraulic lines from the lift cylinder. (If a hose
rupture safety device has been installed, disconnect it’s hy-
draulic lines too.)
2. Lift cylinder
a. Suspend the lift cylinder from hoisting gear.
2
b. Unscrew the two locking screws (2) and remove the two 3
bolts (3) from the lifting rack or front frame, respectively.
c. Lower the lift cylinder with the hoisting gear down to the
ground or onto a jack.
Screws: 70 Nm
• Greasing
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
1. Hydraulic lines
★ Mark the hydraulic lines to make sure that they don't get
mixed up when being reconnected. 1
2. Dump cylinder
a. Suspend the cylinder from hoisting gear. 2
3
b. Unscrew the two locking screws (2) and remove the two
bolts (3) from the rocker arm (4) or front frame, respec-
2 3
tively.
c. Lift the dump cylinder with the hoisting gear up and out 4
of the frame.
4 Dump cylinder: 36 kg
Screws: 70 Nm
• When reconnecting the hydraulic lines make sure that the
markings coincide.
• Greasing
• Check the hydraulic oil level and top up with oil if necessary.
Once finished you should vent the hydraulic oil tank. See
Operation Manual: HYDRAULICS, CHANGING OIL, VENT-
ING HYDRAULIC OIL TANK.
Stuck glass
• Cleaning cloths
• Knife
D C
• Masking tape
Replacing a window:
★ The order numbers for the respective parts are listed in the
following table.
• Cut away the sealing compound strip (2) from the door 2
frame to at least 1 - 2 mm.
• Use masking tape to mask the left and right-hand side ar-
eas.
• Using two suction grippers insert the glass into position and
press slightly against it.
• Hold the glass in the correct position and apply the sealing
compound completely around the inside and outside of the
glass window's edge.
• Remove the masking tape after the glass sealant has dried.
Spare Parts:
Installation
• To mount the wipers and the window heater systems carry
out the removal procedure in reverse order.
Rear window
a. Reconnect the plug-type connector for the rear window 1 3 4 5
heater system (3).
1 2
1: 15 Nm 2: 15 Nm 3: 22 Nm
1: 15 Nm 2: 15 Nm
D=70/35-363
BOOM
Hubzylinder D=95/50-670
K17=200bar
heben K17.5=230bar M22x1,5
M18x1,5 senken 53 44
P 43
44 10 6 M18x1,5 7
11
G 1/2" 40 40
G 1/2"
320 bar
BUCKET 44M18x1,5 L Rexroth LAGC
91
R
Kippzylinder D=85/50-522 B1 8
einkippen A1
M18x1,5 auskippen
13
44 12
320 bar 250
44 M18x1,5 ccm
B2 /U
d=3,5 Kabine
M22x1,5 (15L) A2
15
M14x1,5 14 320 bar 240 bar 240 bar
61 Y140
M18x1,5
M22x1,5
44 175 bar
B3
43
Option
M10x1
M14x1,5
61 A3 18+4 bar
T LS
M22x1,5 (15L) P T
14a
HDM19 T1 29 48 29
92
40 40 41a
31
32 M22x1,5 (15L) G 1/2" G 1/2" G 1/4" M10x1
48
30
55 65 3
M22x1,5 (15L) M22x1,5 (15L) 9 4
5 350
M26x1,5 26a
21
18 43a ca. 9 l/min
UNTEN 95
M30x2 (22L) OBEN M18x1,5
43a
M26x1,5 (18L) 96 M26x1,5 44
19 P
M26x1,5 (18L) 26b LK 35mm
ca. 11 l/min 1 bar 27a 59a
M22x1,5 (15L)
M22x1,5 (15L) 20 T P M18x1,5
Lenkung / steering M30x2 (22L)
44 98
54b 16 44
Arbeits-hydr./working hydr. 54b M30x2 (22L)
62a 66 55a
M18x1,5
16a
G 1 1/4" 46 A B2 45 27b 59b Hydraulikschaltplan
LK 40mm
B1 G 1" Hydraulic Diagram
P1
P2 1
M14x1,5
0,03 0,35 0,5
bar
62
bar bar 97
ca. 30 l Oel
ca. 15 l Luft
B1
R
91
Bucket D=85/50-522 A1
10 Tilt in
9
Tilt out
320 bar d=3,5 250
ccm 12
/U
B2 Cabin
175 bar
320 bar
Y140
P T LS
17 B3
A3 T
18+4 bar
Option 18 HDM19 T1
350
Hydraulic circuit diagram 2/4 for WA65-5 and WA70-5
ca.1-2 l/min
d=1,0
ca. 9 l/min
4
ca. 11 l/min 96 P
1 bar
steering
2 T P
working hydr.
B1 A B2 G 1"
P1
3
P2
0,03 0,35 0,5
bar bar bar
ca. 30 l Oil
ca. 15 l Air 1
90-5
WA65-5 / WA70-5 / WA80-5 90-6
Hydraulic circuit diagram 3/4 for WA65-5 and WA70-5
40 G 1/2" 55a
2,0 l
10c
G 1/2"
6 5 4
40 ALS
55a
Option
58
1 2 3
P
55a G 1/2" G 1/4"
BOOM
Hubzylinder D=95/50-670 11b 40 41a
10b
heben
senken
B1
10a L R
11a
A1
Kippzylinder D=85/50-522
einkippen
auskippen
B2
d=3,5 P T LS
A2
B3
A3 T
T1
9b
8b 65a 55b
B
EF CF U
Z
LS
P
B
A
M
T
M22x1,5(15L) A
T1 S G
H2 53
B1 A B2
P1
P2 Hydraulikschaltplan
Hydraulic Diagram
heben senken
Option: ALS G 1/2"
40
2,0 l
M18x1,5
44
92f 10f
Standard:
10g
ohne
Schlauch-Bruch-
6 5 4
Sicherung
G 1/2"
40 50a
M14x1,5(8L) 55a
92e
d=0,8 60a
G1/2"
1 2 3
40 64b 11e
68b
G 1/4"
41 50a
10e
E C2
9a
35g
G 1/2"
92h 40
8a 55d
35h
M18x1,5
50a 44
V2 PIL G 3/8" G 3/8"
42a 42a
G1/2" G1/4"
40 41a 50d A B Kabine
D=70/35-363
M10x1
0,8
M22x1,5
35d 220 bar P 43
M16x1,5 (10L)
B1 55d 55d
G1/2" G1/4"
40 41a 50d
d=1,0
41a
V2 PIL A1 1 350
50d
92h 63a 8
G 1/4"
50a 55a Option:
35j 55d
Schlauchbruch-
b2 sicherung auskippen (rot) 4
32a
E C2
320 bar einkippen (blau)
44
63 50a 32b
68b G1/2" a2 d=0,6
40 64b
M16x1,5 (10L)
d=0,8 B2
13a 13
d=3,5 d=1,0
M14x1,5(8L) 12a 12
50c A2 2
M18x1,5
ohne
10g Schlauch-Bruch-
Sicherung
b3 Standard zu (weiß) 5
31a
M18x1,5 auf (braun)
44
31b
links 63 50a a3 250-125 ccm/U
M16x1,5 (10L)
heben senken B3 66a
90q
43
15 Standard:
ohne ALS
14
71a Option: 3.Hydr.-Kreis elektr. 185 bar
A3 T
18+4 bar 6 P T
M22x1,5
55b
31c
35f T1
HDM19 91a G 1/4"
d=2,0
4__ 68a 61a P T LS
4__
C2
G1/2"
50a 40
3
72d
4
BUCKET 5
Kippzylinder
D=90/50-450
M18x1,5
44
einkippen auskippen
22a
55d
P B
Standard
15_ M10x1
15_ 48a
G 1/2" G 1/2"
42 40 50a
EF CF
60b
M12x1,5 MB 90p
b a a b
60c SAE 1" (20km/h)
G 1/4" SAE 1.1/4" (30km/h) B oben M1 A6VM80HA
41a 50d 50d
20km/h
Ps Fa Fa1 Fe 90e 20 km/h
24b
B links
LS 24
30km/h
A6VM160HA
Vg=40ccm/U P LK 35mm
bei 20 km/h SAE 3/4" G 1/4"
59a
20km/h verschlossen
M18x1,5 U 90f 30 km/h
Standard P=45kW 70f 20km/h 61a a
15a M22x1,5
M22x1,5 (15L) n=2350 U/min Vg=71ccm/U SAE 1"
24a 30km/h
30km/h 65g 43
bei 30 km/h 90o
M 25 8
M14x1,5
61 b
Standard: Option: GRA
Vg=8,6 ccm/U
A4VG40DA A4VG40EP bei 20 km/h
M14x1,5
90a 20 km/h 90b 20 km/h Vg=19,6 ccm/U
LK 55mm
30km/h SAE 1" (20km/h)
SAE 1.1/4" (30km/h)
61 bei 30 km/h 70a 23
14a
M22x1,5 (15L)
T2
14b A rechts M26x1,5
X1 X2 G S 42a 30km/h
55d
M14x1,5 M33x2
Fs M12x1,5
60b
20km/h 65f 41b 20km/h 45a
M18x1,5 M42x2
MA
30km/h 65b 44 30km/h 47
14d
68
nur bei 30km/h
55
M18x1,5
44
M22x1,5 (15L)
M18x1,5
M22x1,5 (15L) M18x1,5 50a 44
62a 66 20km/h nur bei 30km/h 44
A B 26d
15e LK 35mm
Arbeits-hydr./working hydr. A 59a
26e
P
30km/h
14c
M30x2 (22L) 16a
50e 30km/h
G3/8"
92b
(28L)
G 1.1/4"
46 16d 27i
(35L)
Hydraulic Diagram
42b
B1 A B2 27e
T
Option
Vorsteuergeraet
P1 20km/h
92d
M14x1,5
61 14e
pilot valve
M22x1,5
43 LK 35mm
M22x1,5 (15L) B 59a
1 27d
M18x1,5
44
P2
27g
91h
0,5 2,0
0,03 0,35 Option: reversierbarer Lüfter M14x1,5
bar bar Saugschlauch DN32
M16x1,5(10L)
M16x1,5(10L)
bar bar 71b 66b
ca. 30 l Oel
Version: (20 + 30 km/h)
ca. 16 l Luft WA80