PC200-7 Service Jan2002
PC200-7 Service Jan2002
PC200-7 Service Jan2002
Engine
6-connected solenoid valve
(below control valve)
Control Valve
Swing Motor
Swivel Joint
Air Cleaner Cooling Ass’y
Multi Pattern
Changes in Engine and Engine-related Parts 2
Adoption of "Eco
Valve" for engine
oil drain
Spacer
Sealed Cover
Fuel Injection Pump
Sound absorbing material
Adoption of "Eco Valve”
Added Pointer for engine oil drain
ECO valve
Changes in Engine and Engine-related Parts 4
Air Cleaner
Filter paper of the conventional cellulose type is replaced with Stratabore type A A
because of its excellent dust collecting capacity.
Replacement time : 250h => 500 h
•Bellmouth shroud and aluminum oil cooler are adopted to reduce noise and to improve the heat
balance.
•The space between the oil cooler and the radiator is widened for easy cleaning. (A cover is
added to the upper side.)
•The cooler check valve is placed inside the oil cooler pipe to simplify the circuit.
•The removal and installation method of oil cooler and radiator is improved, so that they can be
individually removed and installed.
The space between the oil cooler
and the radiator is widened for
easy cleaning and a cover is
added to the upper side
The space between the oil cooler and the Adoption of aluminum oil cooler
radiator is widened for easy cleaning and a
cover is added to the upper side Adoption of remote drain hose
Changes in Cooling
7
Adoption of cooler check valve placed inside oil cooler
Ø 56
130
•The oil filler port and the strainer are improved so
that a large oil gun can be used and that stable oil
220
Ø 48
feed is possible without fuel spitting
Changes in Fuel Tank
9
Front side
of machine
Fusible link
Battery Relay
6-connected solenoid
Wiring of machine
11
Fuel Control
For fuel control, the same governor
motor as PC200-6 is adopted
Return Filter
Micro glass (high performance filter medium) is
adopted to use the filter for a long time and to make
the size small
3. Precautions
(1) Be sure to keep the removed standard items (element, valve and strainer) in order because they are used
again after the flushing.
(2) After the flushing, dispose of the special element for flushing. But keep the blind plate in order because it is
used again for the next flushing
Changes in Control Valve 17
B
A-A
A B
A travel junction valve
is placed inside
Output
C
A back pressure valve
C-C is placed inside B-B
C
Changes in Control Valve
18
A boom hydraulic
drift prevention valve
is placed inside
D
D-D
EPC05 EPC10
Changes in Hydraulic Pump
20
PC Valve
PC valve (placed inside the servo) LS Valve
A-A
A
LS Valve
A
Changes in Hydraulic Pump
21
The boom hydraulic drift prevention valve is directly connect to the valve to simplify the piping
Safety
Valve
Safety
Valve This pipe is unnecessary
Changes in Hydraulic Piping
23
The back pressure valve is directly connected to the valve to simplify the piping
Oil Cooler
Control
Oil Cooler
Valve
Back Back
pressure Cooler Check Valve pressure
valve valve
Control
Valve
Swing suction Swing suction
Cooler Check Valve
Basically, the pressure compensation type CLSS for the existing PC200-6 and PC228US-2 is used
as usual
Travel junction circuit
An output occurs when the
Loading of travel junction valve in differential pressure
control valve has improved straight between the right and left
travel performance, steering Travel Motor Travel PPC
Valve travel PPC pressures
performance and ability to travel up comes to 4kg/cm2 approx.
hills at the same time Control Travel steering
Valve signal output
The junction circuit is mechanism
(Shuttle) Pressure switch
the internal passage
Steering signal
Travel junction valve Controller
Solenoid drive signal
Solenoid of
travel junction
valve
Pump
PPC Horse pattern 25
The usual taper seal type hose mouthpiece has been replaced completely with the seal type hose
mouthpiece to make it more reliable
UNF Screw(ISO)
•Large capacity and slow speed swing motor --> Reduction of swing noise
•Change or machinery reduction ratio --> Miniaturization
•Separation of feed oil pipe and oil level gauge
PC200-7 PC200-6
Motor Type KMF125ABE-5 KMF90ABE-3
Motor Capacity (cc/rev) 125 87.8
Machinery reduction ratio 18.627 26.505
804
750
Changes in Travel Device 29
•Light switch
RH Stand Rear
•Buzzer cancel SW •Hot & Cool Box
•Luggage Box
•Swing lock SW
RH Front
•Adoption of magazine rack
•Adoption of cup holder
LH Stand
•Multi-monitor
•Ash Tray
•Cigarette lighter •FM/AM Radio
•Safety lock lever •Air conditioner panel
(with neutral engine start function) (Automatic air conditioner)
Changes in Cab Interior
31
Inside air filter : Left rear side Outside air filter : Left side face of cab
Drain
Changes in Cab Interior
32
Damper mount
dB(A) G
99.8dB(A) 5dB(A) 100
9
Riding over protrusion on one side 7.7G 3.3G
(when traveling forward at high speed) 94.8dB(A)
Comfort on flat ground
90
Shock at riding over
6
Comfort on flat ground
84.7dB(A) 2.2dB(A) 3.4G
82.5dB(A) 80
Riding over
3
Noise
Noise
70
0
Laminated viscous Damper Mount
Changes in Cab Interior
33
Emergency Switch •Emergency switch for driving pump
Switch layout
In an •Swing holding brake release switch
Right stand rear side emergency Cancel a 10A : Controller
b 20A : Solenoid valve
c 10A : PPC hydraulic lock solenoid valve
Normal Normal d 10A : Window washer, Cigarette lighter
e 10A : Horn
f 10A : Spare
g 10A : Revolving warning lamp,
Open this Cover Arm Crane Solenoid valve
h 10A : Option light
i 10A : Radio, Speaker, Left knob SW
j 10A : Spare
Fuse layout k 20A : Air Conditioner Unit
Fuse k a
l 20A : Monitor, Wiper motor
l b
Left stand rear side m c m 20A : Light, Light relay
n d n 10A : Option Power Supply 1
Open the cover in o e o 10A : Option Power 2, Travel Alarm, 12 V Power Supply
the same way as on p f p 10A : Radio Backup
the right stand q g q 10A : Monitor (Constant power supply)
r h r 10A : Starter SW
s i
s 10A : Room Lamp
t j
t 10A : Spare
Changes in Cab 34
Living space
Capacity : 14 % Up
Elbow clearance : 10 mm Up
The front guard/top guard mounting boss is Head clearance : 11 mm Up
prepared as a standard accessory Foothold space : 29 mm Up
Changes in Air Conditioner 36
Ø 34 <== Ø 27.2
Partial notching for easy removal and installation of engine fuel filter and easy maintenance of
injection pump area
Additional notching
Changes in Revolving Frame 40
Deck rigidity is improved in order to protect it from external damages and to improve the damping ability
•The deck was made higher to improve its rigidity.
•Plates of the deck framework were made thicker, and the plate composition was optimized
t12
t9
t12 t12
t4.5 t4.5
t12 t9
PC200-7 PC200-6
149
228
Changes in Undercarriage 41
Track Frame
The mounting seat was changed as the swivel joint was changed
Bolt ON type
Welding type
Area
PC200-6 x 1.8
200 160
Changes in Undercarriage
42
Front Idler
•Cast materials are replaced with sheet metal
•Miniaturization
•Tread is made harder to improve wear resistance
HRc 48 -- 54 <== 40 - 47
Ø 560
Ø 538
Track Link
•Strut is added to the link
•Adoption of square nut
Changes in Swivel Joint 43
•The mouthpiece shape of connecting hose is changed from the split flange type to the face seal type
•The port shape is changed and a cast shaft is adopted for miniaturization
SBMA880
Changes in Work Equipment
45
Cylinder
The boom cylinder stroke is increased to change the boom raising angle
The shape of the arm cylinder bottom cushion is changed to improve the cushion performance
Change of rod head diameter Change of sealing material (improvement of heat resistance)
Arm Cylinder : Ø 146 <= Ø 140 Buffer ring : U641 <= U801
Bucket Cylinder : Ø 127 <= Ø 125 Piston ring : H-NBR (G928) <= NBR(A980)
Changes in Electronic Control System 47
Basically, the electronic control system similar to the one of PC200-6 is adopted
Engine and pump control Priority to work
The same working modes as PC200-6 are adopted in the exiting same system, A
and you can select modes suitable to working conditions precisely Active Mode
Priority to fuel
A Mode : 145 PS/1950 rpm(Rating point)
efficiency
E Mode : 125 PS/1750 rpm(90 % Partial output point)
B Mode : 110 PS/1650 rpm(85 % Partial output point) E
L Mode : 100 PS/1800 rpm(92 % Partial output point) ECO Mode
Engine Torque Curve Engine output Curve Pump output Curve Dedicated to
Power-Up breaker
Engine output PS
Engine output PS
Engine Torque T
A
E E A B
Equal horsepower control E Breaker Mode
B L
B L B Dedicated for
Equal horsepower control L
lifting
Engine rpm N Engine rpm N Pump delivery Q
L
Power-up time Lifting Mode
•When the power-up switch is pressed in the A or E Mode, the cut-off is
cancelled and the pressure rises. (The L Mode is generally for While E,B Mode Traveling
canceling cut-off and raising pressure.)
Pump discharge
Engine Torque T
Traveling time
pressure
•In the A Mode travel, the control is the same as at the power-up time
•In the E or B Mode travel, the control is the same as in the A Mode,
the cut-off is cancelled and the pressure rises Engine rpm N Pump delivery Q
Changes in Electronic Control System
48
Pump delivery
pressure, the pump pressure sensor detects it. The controller transmits the signal for
reducing the delivery to the EPC valve for PC control to reduce relief loss
Cut-off time
Working mode Swing lock switch Power-up switch Travel Pump discharge
pressure
A Mode E Mode ON OFF ON OFF ON OFF
Cut-off <= Cut-off cancel Cut-off Cut-off cancel Cut-off Cut-off cancel Cut-off
Contents of control
Automatic ATT-circuit-switching function was added; the circuit is switched according to an operation mode
selected. Lifting boom and operating attachment decrease flow rate of attachment
Complex movement & flow rate of 2 pumps & high-pressure safety
Select A,E mode
valves(Operating with machine simultaneously, decrease oil flow to ATT)
Select B mode Simplex movement (for breaker) & flow rate of 1 pump & low-pressure safety valves
ATT_PPC
Simplex circuit EPC of restriction
after switching
ATT-switching
valve
Additional Solenoid-operated
return filter switching valve Controller
Changes in ATT Specification Machine
64
Low-pressure accumulator
Automatic switching-valve
High-pressure accumulator
(Option)
5
PS1 => 1 12UN
16
3. Bucket
Side shroud adopted
t28 t25
t45 t36
t14 t12
t28 t22
Wear plate
t12 t9
t19 t14
Side shroud
Side cutter
t12 t8
t12 (added)
t8 (added)
Multi-operation pattern 70
Position to attach multi-pattern The multi-valve is the same as the current one
Interchangeable Information(1/4) 72
Main valve PC200-7 PC228US-3 Spool tune up is different, PC200-7 does not have swing spool
stroke limit
Swing motor PC200-7 PC228US-3
Boom cylinder PC200-7 PC228US-3 Cylinder stroke is different, Cushion is different
Arm cylinder PC200-7 PC228US-3 Basia spec of cylinder is interchangeable but Full Deluxe Interchangeable of installation
specs' is different due to new bushing
Bucket cylinder PC200-7 PC228US-3 Basia spec of cylinder is interchangeable but Full Deluxe Interchangeable of installation
specs' is different due to new bushing
S/J PC200-7 PC228US-3
S/C PC200-7 PC228US-3 Installation pitch is different
Machinery PC200-7 PC228US-3 Dipstick and Filler port are different
Idler PC200-7 PC228US-3
Cushion PC200-7 PC228US-3 Spring and Yoke are different
Truck roller PC200-7 PC228US-3
Carrier roller PC200-7 PC228US-3
Shoe PC200-7 PC228US-3
Final & motor PC200-7 PC228US-3 Drawbar pull is different
Sprocket PC200-7 PC228US-3
Cooling PC200-7 PC228US-3 Structure is different
Ope's cab PC200-7 PC228US-3 Shape of cab is different
Interchangeable Information(4/4) 75