Ps PDF
Ps PDF
Ps PDF
G STEERING
B
SECTION
POWER STEERING SYSTEM C
E
CONTENTS
PRECAUTIONS .......................................................... 3 Components ........................................................... 15 F
Precautions for Supplemental Restraint System MODEL PR24AD ................................................. 15
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN- Disassembly and Assembly .................................... 16
SIONER” .................................................................. 3 DISASSEMBLY ................................................... 16 PS
Caution ..................................................................... 3 INSPECTION AFTER DISASSEMBLY ................ 17
FPREPARATION ........................................................ 4 ASSEMBLY ......................................................... 18
Special Service Tools (SST) ..................................... 4 POWER STEERING OIL PUMP ............................... 24
H
NOISE, VIBRATION AND HARSHNESS (NVH) On-Vehicle Inspection and Service ......................... 24
TROUBLESHOOTING ................................................ 5 OIL PUMP PULLEY HYDRAULIC PRESSURE
NVH Trouble shooting Chart .................................... 5 INSPECTION ...................................................... 24
POWER STEERING FLUID ........................................ 6 Removal and Installation (QR20DE and QR25DE I
Checking Fluid Level ................................................ 6 engine models) ....................................................... 24
Checking Fluid Leakage ........................................... 6 REMOVAL ........................................................... 24
Bleeding Hydraulic System ...................................... 6 INSTALLATION ................................................... 24 J
STEERING WHEEL .................................................... 7 Disassembly and Assembly(QR20DE and
On-Vehicle Inspection and Service .......................... 7 QR25DE engine models) ........................................ 25
PLAY INSPECTION .............................................. 7 INSPECTION BEFORE DISASSEMBLY ............. 25
K
NEUTRAL POSITION INSPECTION .................... 7 DISASSEMBLY ................................................... 25
STEERING TORQUE CHECK .............................. 7 INSPECTION AFTER DISASSEMBLY ................ 26
STEERING ANGLE INSPECTION ........................ 7 ASSEMBLY ......................................................... 26
Removal and Installation .......................................... 8 Removal and Installation (YD22DDTi engine L
REMOVAL ............................................................. 8 model) ..................................................................... 28
INSTALLATION ..................................................... 8 Disassembly and Assembly (YD22DDTi engine
STEERING COLUMN ............................................... 10 model) ..................................................................... 30 M
Removal and Installation ........................................ 10 INSPECTION BEFORE DISASSEMBLY ............. 30
REMOVAL OF LOWER JOINT AND HOLE DISASSEMBLY ................................................... 31
COVER ............................................................... 10 INSPECTION AFTER DISASSEMBLY ................ 32
INSTALLATION OF LOWER JOINT AND HOLE ASSEMBLY ......................................................... 32
COVER ............................................................... 10 HYDRAULIC LINE .................................................... 34
REMOVAL OF STEERING COLUMN ASSEM- Components (QR20DE and QR25DE engine mod-
BLY .......................................................................11 els) .......................................................................... 34
INSTALLING STEERING COLUMN ASSEMBLY....11 REMOVAL AND INSTALLATION ........................ 38
Disassembly and Assembly ................................... 12 Components (YD22DDTi engine model) ................ 39
DISASSEMBLY ................................................... 12 REMOVAL AND INSTALLATION ........................ 41
INSPECTION AFTER DISASSEMBLY ............... 12 SERVICE DATA AND SPECIFICATIONS (SDS) ...... 42
ASSEMBLY ......................................................... 12 Wheel ..................................................................... 42
POWER STEERING GEAR AND LINKAGE ............ 13 Steering Angle ........................................................ 42
Removal and Installation ........................................ 13 Steering Column ..................................................... 42
REMOVAL ........................................................... 13 Steering Linkage ..................................................... 42
INSTALLATION ................................................... 13 Steering Gear ......................................................... 43
PS-1
Oil Pump ................................................................. 43
Steering Fluid .......................................................... 43
PS-2
PRECAUTIONS
PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER” EGS000IZ
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual. C
WARNING:
● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. D
● Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. E
● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors. F
Caution EGS00049
● Always follow the warnings and the cautions below in disassembly procedures: PS
– Work in a clean, dust-free place. No dust proof device is necessary.
– Clean outside of unit before disassembly.
– Clean parts to be disassembled. Be careful not to allow any dirt or other foreign materials to enter or con- H
tact with parts.
– Assemble disassembled parts properly, following order shown in manual. If work has been suspended in
the middle of assembly, place a clean cover over parts. This will prevent them from being contaminated. I
– Use paper towels when removing dirt and other foreign materials. Cloth shop towels can leave lint on
cleaned parts that might affect operation of parts.
– Clean disassembled parts (except rubber parts) with kerosene. Drain oil by blowing with air or absorbing J
with shop papers.
– Before assembling, apply DEXRONTM III or equivalent to O-rings and seals.
– Replace gaskets and O-rings with new ones. Be careful not to damage any O-rings, oil seals, and gaskets K
during assembly.
● If following part is scratched after disassembly of steering pump, replace applicable part: case, rear body,
side plate, pulley, rotor, vane, or flow control valve. L
● Mark source of fluid leak with a white marker for identification.
● Seals and copper washers must not be reused.
M
PS-3
FPREPARATION
FPREPARATION PFP:00002
Tool number
Description
Tool name
ST3127S000
Steering torque check
Preload gauge
ZZA0806D
ST27180001
Removal of steering wheel
Steering wheel puller
ZZA0819D
KV48104400
Teflon ring correcting tool
a: 50 mm (1.97 in) dia. Installing of rack Teflon ring
b: 36 mm (1.42 in) dia.
C: 100 mm (3.94 in)
S-NT550
KV48103400
Inspecting rotating torque
Torque adapter
ZZA0824D
KV48103500
Hydraulic pressure gauge
KV48102500
Hydraulic pressure gauge adapter
1. KV48102500−01
(I-joint)
Measurement oil pump relief pressure
2. KV48102500−02
(Flare joint)
3. KV48102500−03
(Bolt) ZZA0839D
4. KV48102500−04
(Washer)
ST35300000
Drift
Installing drive shaft seal
a: 45.1 mm (1.776 in) dia.
b: 59.0 mm (5.323 in) dia.
ZZA0881D
PS-4
Symptom
×: Applicable
Reference page
STEERING
Noise
Shake
Judder
Shimmy
Vibration
Possible cause and SUSPECTED PARTS
NVH Trouble shooting Chart
×
Fluid level PS-6
Air in hydraulic system PS-6
×
×
Tie-rod ball joint swinging force PS-17
×
Tie-rod ball joint rotating torque PS-17
×
Tie-rod ball joint end play PS-17
×
Steering gear fluid leakage PS-6
PS-5
×
Steering wheel play PS-7
Steering gear rack sliding force –
×
×
Drive belt looseness EM-13.
×
×
×
Improper steering wheel –
×
×
×
Improper installation or looseness or tilt lock lever PS-12
×
×
×
×
Mounting rubber deterioration –
×
Steering column deformation or damage PS-10
×
Improper installation or looseness of steering column PS-10
Steering linkage looseness PS-13
×
×
×
×
×
PROPELLER SHAFT NVH in PR section
×
DIFFERENTIAL NVH in RFD section
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
×
×
×
×
×
AXLE AND SUSPENSION NVH in FAX, RAX, FSU, RSU section
×
×
×
×
×
TIRES NVH in WT section
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
×
×
×
×
ROAD WHEEL NVH in WT section
×
×
×
×
×
×
×
PFP:00003
EGS000A9
L
F
K
E
B
A
H
D
C
PS
M
POWER STEERING FLUID
CAUTION:
● Never reuse drained power steering fluid.
● Use DEXRONTM III or equivalent. Never use Nissan Power Steering Fluid Special, Nissan Matic
Fluid C, or D.
Checking Fluid Leakage EGS0004C
1. Lift vehicle.
2. Fill tank up to MAX mark. Turn steering wheel several times from stop to stop. Add fluid if fluid level goes
down. Repeat this step until there is no fluid decrease and no bubble in tank.
3. Start engine and repeat step above with engine at idle. Continue step until no decrease in fluid happens.
If bleeding is not complete, following symptoms can be observed.
● Bubbles are created in reservoir tank.
Turn steering wheel slowly or stop vehicle. Sound of fluid movement may be heard from gear valve and
pump. This sound has nothing to do with steering performance or durability.
PS-6
STEERING WHEEL
PLAY INSPECTION
1. Turn steering wheel to straight-ahead position. Start engine and lightly turn steering wheel clockwise and
B
counter clockwise until front wheels start moving. Measure travel to starting point on circumference of
steering wheel.
Steering wheel play inspection standard : 0 - 35 mm (0 - 1.38 in) C
2. If play is outside specifications, check following parts for proper installation: steering gear assembly, front
suspension, axles, and steering column.
● Check steering wheel for vertical, horizontal, or axial play. D
FAA0016D
PS-7
STEERING WHEEL
● Start engine. With engine at idle, turn steering wheel from stop
to stop and measure steering angles.
Inner wheel Minimum : 36°
Nominal : 39°
Maximum : 40°
Outer wheel : 31°
● If angles are outside specification, measure rack stroke.
Rack stroke : 66.5 mm (2.618 in)
SGIA0055E
REMOVAL
1. Remove air bag module. Refer to SRS-30, "DRIVER AIR BAG MODULE" .
2. Remove horn connector.
3. Remove steering wheel mounting nut and paint mating marks on steering wheel body and top of column
shaft.
4. Using a steering wheel puller (SST), remove steering wheel.
SGIA0080E
INSTALLATION
Paying attention to following items, install in the reverse order of removal.
NOTE:
● When reconnecting spiral cable, fix cable with a tape so that fixing case and rotating part keep aligned.
This will omit neutral position alignment procedure during spiral cable installation.
● Neutral position (refer to figure)... Gently turn spiral cable clock-
wise until it comes to the stop. Then turn it counter clockwise
(approximately 3.0 turns) until centering mark is aligned with
adjustment mark. (Service part is fixed in neutral position with
stopper. It can be installed onto steering wheel without align-
ment once stopper is removed.)
CAUTION:
● Place steering wheel as follows: Front wheels in straight-
ahead position. R mark on the cancel claw faces down. 3
bosses align with 3 holes behind steering wheel assembly.
Check that spiral cable is placed in neutral position and that SGIA0096E
locating pin on the left of the spiral cable is aligned with the
locating pinhole behind the steering wheel assembly.
● Do not rotate spiral cable more than necessary. Do not tighten them excessively. (The cable may
be torn off.)
● After installation, check system for proper operation by observing air bag warning lamp.
● If air bag indicator indicates any abnormal condition, use self-diagnosis function or CONSULT to
reset or cancel memory.
PS-8
STEERING WHEEL
● If air bag warning lamp still shows abnormal condition even after operation above, diagnose sys-
tem. Repair malfunctioning parts. A
PS
PS-9
STEERING COLUMN
SGIA0015E
CAUTION:
Care must be taken not to give axial impact to steering column assembly during removal and installa-
tion.
REMOVAL OF LOWER JOINT AND HOLE COVER
1. Raise vehicle with front wheels in straight-ahead position.
2. Mark lower joint and steering gear with paint for easy installation. Remove pinch bolt from lower side of
lower joint.
3. Remove mounting bolt and nut from upper side of lower joint.
4. Remove footrest.
5. Remove hole cover and lower joint from vehicle.
6. Remove clamp and lower seal cover from hole cover.
INSTALLATION OF LOWER JOINT AND HOLE COVER
● Refer to component diagram for tightening torque. Install in the reverse order of removal.
PS-10
STEERING COLUMN
● Connect lower joint onto steering gear with slot on lower portion
of lower joint engaged with guide tip projection. Check guide tip A
is positioned as shown in the figure.
SGIA0105E
PS
SGIA0010E
PS-11
STEERING COLUMN
SGIA0016E
DISASSEMBLY
● Disassembly and assembly procedures should be done with steering lock unlocked.
1. Remove combination switch and spiral cable from jacket tube.
2. Remove jacket tube-to-column shaft mounting nut and remove column shaft from jacket tube.
3. Remove spring from mount assembly.
4. Remove mounting nut and adjusting stopper.
5. Remove steering adjusting bolt and remove tilt lever stopper and tilt lever.
INSPECTION AFTER DISASSEMBLY
● If steering wheel does not turn smoothly, check the following and replace malfunctioning part.
1. Check column shaft bearing for damage and other malfunctions. Lubricate with grease or replace column
shaft if necessary.
2. Check jacket tube for deformation and cracks, and replace if necessary.
● If vehicle has slightly crashed, measure dimension “L” as
shown. If outside standard, replace steering column assem-
bly.
Dimension “L” : 543 mm (21.38 in)
STC0720D
ASSEMBLY
● Refer to component parts drawing for tightening torque and reverse disassembly procedure for assembly.
● After assembling steering column, check tilt mechanism.
PS-12
POWER STEERING GEAR AND LINKAGE
PS
SGIA0009E
1. Power steering gear assembly 2. Power steering tube bracket 3. Cotter pin
REMOVAL H
1. Remove cotter pin, and loosen mounting nut. Remove tie rod from steering knuckle with a pitman arm
puller.
CAUTION: I
● Be careful not to damage dust boot at ball joint of tie rod.
● Before using pitman arm puller (multi-purpose tool), loosely tighten nut for temporary holding.
2. Mark lower joint and steering gear with paint for easy installation. Remove pinch bolt from gear side of J
lower joint.
3. Remove high pressure-side tube and low pressure-side hose of hydraulic piping from steering gear.
4. Remove mounting nuts on upper portion of stabilizer connecting rod and stabilizer clamp mounting bolts. K
Move stabilizer toward vehicle front.
5. Remove steering gear assembly mounting bolts and nuts. Remove power steering tube bracket and
steering gear assembly from suspension member. L
6. Tilt steering gear to prevent any contact with other parts. Then remove it from right side of vehicle.
INSTALLATION M
Paying attention to following items, install in the reverse order of removal.
● After installation, bleed air. Refer to PS-6, "Bleeding Hydraulic System" .
● Remove mounting bolt and nut from upper portion of lower joint. This will facilitate installation of lower joint
to steering gear. Then slide lower joint in place.
● Check lower slit of lower joint is engaged with projection on rear
cover cap. Install pinch bolt for lower portion of lower joint.
Check steering gear is in straight-ahead position. Also check
rear cover is in position shown in figure. Then install lower joint
to steering gear.
SGIA0105E
PS-13
POWER STEERING GEAR AND LINKAGE
SGIA0010E
PS-14
POWER STEERING GEAR AND LINKAGE
Components EGS0004J
MODEL PR24AD A
PS
SGIA0644E
PS-15
POWER STEERING GEAR AND LINKAGE
DISASSEMBLY
1. To disassemble and assemble power steering gear, fix steering
gear mount flange in a vise with copper plates.
CAUTION:
● Clean steering gear with kerosene. Be careful to avoid
splashing or applying any kerosene over connector of
discharge port or return port.
● Always replace O-rings, oil seals, and copper washes
with new ones.
SGIA0056E
SGIA0018E
PS-16
POWER STEERING GEAR AND LINKAGE
STC0013D
D
8. Remove end cover with a 36 mm (1.42 in) open head.
CAUTION:
When removing, avoid damaging surface of rack. If dam- E
aged, rack assembly must be replaced. Otherwise, oil leaks
will result.
9. Pull rack assembly with rack Teflon ring out of gear housing
F
assembly.
CAUTION:
When pulling out rack assembly, do not damage cylinder
inner wall. If it damaged, it may cause oil leak. Replace gear PS
housing assembly. SGIA0461E
10. Heat Teflon ring to approx. 40°C (104°F) with a hot air blower Remove it and O-ring from rack. Be careful
not to damage rack. H
11. Use a taped 29 mm (1.14 in) socket and an extension bar. Push
out and remove center bushing and rack oil seal together from I
gear housing assembly.
CAUTION:
● Be careful not to damage gear housing assembly and cyl-
J
inder inner wall.
● If damaged, gear housing assembly must be replaced.
Otherwise, oil leaks will result.
K
SGIA0467E
PS-17
POWER STEERING GEAR AND LINKAGE
SGIA0152E
SGIA0083E
3. Axial endplay
● Apply load of 490 N (50 kg, 110.6 lb) to ball stud axially. Mea-
sure amount of movement that stud makes by using a dial
gauge. Check reading is within range specified below. If not,
replace outer and inner sockets.
Outer socket : 0.5 mm (0.02 in) or less
Inner socket : 0.2 mm (0.008 in) or less
SGIA0057E
ASSEMBLY
● Always replace O-rings, oil seals, and copper washers with new ones.
1. Install an O-ring.
CAUTION:
Do not reuse rack Teflon ring and O-ring.
PS-18
POWER STEERING GEAR AND LINKAGE
SST083B
D
3. To fit Teflon ring on rack, install Teflon ring correcting tool (SST)
from tooth side. Compress the rim of ring with the tool. Then, put
the O-ring on the Teflon ring.
E
PS
SGIA0464E
SGIA0097E
L
c. Install center busing and rack oil seal separately.
d. Press rack piston in to move inner rack oil seal to proper posi-
tion. M
CAUTION:
Move it until it contacts center bushing.
SST830A
PS-19
POWER STEERING GEAR AND LINKAGE
e. When installing outer rack oil seal, cover end of rack with an
OHP sheet [70 mm (2.76 in) × 100 mm (3.94 in)]. It will avoid
damaging rack oil seal. Then place oil seal over sheet. Pull rack
oil seal along with OHP sheet until they pass rack end. Install
rack oil seal in place using end cover assembly.
SGIA0097E
f. Attach rack oil seal. Both inner lip and outer lip should face each
other.
SGIA0058E
CAUTION:
Do not damage rack surface. If it damaged, it may cause oil
leak. Replace rack assembly.
SST081B
SST073B
SGIA0203E
PS-20
POWER STEERING GEAR AND LINKAGE
SGIA0022J
D
11. Attach lock plate.
CAUTION:
The lock plate is not reusable. Never reuse lock plate. E
a. Position spacer ring to rack.
b. Set lock plate to tie rod and inner socket.
c. Apply thread lock adhesive (Three Bond 1324 or equivalent) to F
thread of inner socket. Screw inner socket into rack and tighten
to specified torque.
d. Crimp lock plate at two points on rack slit. PS
e. Install spacer ring to lock plate as shown in the figure. SST866C
CAUTION:
When installing spacer ring, avoid scratching it. H
12. Decide neutral position of rack gear.
Rack stroke (L) : 66.5 mm (2.618 in)
I
K
STC0034D
13. Coat the adjusting screw with locking sealant and screw it in. L
14. Screw lock nut. Do not tighten lock nut.
15. Tighten adjusting screw to following specified torque.
: 4.9 - 5.9 N·m (0.5 - 0.6 kg-m, 44 - 52 in-lb) M
16. Rotate throughout whole range of pinion so that parts fit with
each other.
17. Install rear cover cap.
18. Install cylinder tube.
SST742C
: 20 - 26 N·m (2.0 - 2.7 kg-m,14 - 20 ft-lb)
PS-21
POWER STEERING GEAR AND LINKAGE
19. Use preload gauge (SST) and torque adapter (SST). Measure
pinion rotation torque within ±180° of neutral position of the gear.
Stop the gear at the point where highest torque is read.
20. Loosen adjusting screw and retighten to 4.9 - 5.9 N·m (0.50 -
0.60 kg-m, 44 - 52 in-lb), and then loosen by 60 - 80°(140-
176°F).
21. With adjusting screw held in place, tighten lock nut to 40 - 58
N·m (4.0 - 6.0 kg-m, 29 - 43 ft-lb).
STC0036D
SGIA0098E
Rotational torque of pinion gear : Around neutral position [within ±11.5 mm (0.453 in)]
Average A : 1.67 - 2.25 N·m (0.17 - 0.22 kg-m, 1.3 - 1.6 ft-lb)
Maximum variation B : 0.98 N·m (0.10 kg-m, 1 ft-lb)
Other than above
Average A : 2.94 N·m (0.30 kg-m, 2 ft-lb)
Maximum variation B : 1.47 N·m (0.15 kg-m, 1 ft-lb)
23. With tie rod gear installed to gear assembly, turn pinion gear
fully to left.
24. Set dial gauge as shown in figure. Measure vertical movement
of rack when pinion is turned counterclockwise with torque of 4.9
N·m (0.5 kg-m, 43 in-lb). Check reading is within range speci-
fied. If reading is outside of specification, readjust rack. If read-
ing is still outside of specification, replace power steering gear.
Specification : 0.08 mm (0.0031 in) or less
SGIA0465E
SGIA0550E
PS-22
POWER STEERING GEAR AND LINKAGE
SST097B
D
c. Twist boot clamp as shown. Pay attention to relationship
between winding and twisting directions.
E
PS
SST440A
SGIA0025E K
e. After twisting wire 4 to 4.5 turns, bend cut end of wire. Cut end of
wire should not touch boot. Be sure wire end is at least 5 mm
(0.20 in) away from clearance for tube. L
STC0124D
29. Connect lock nut and outer socket to inner socket. Temporarily
tighten lock nut until length of tie rod is within specification.
Tie rod length (L) : 169.67 mm (6.68 in)
CAUTION:
Perform toe-in adjustment after this procedure. Length
achieved after toe-in adjustment is not necessarily value
given here.
STC0125D
PS-23
POWER STEERING OIL PUMP
oil temperature.
● Care must be taken to keep hose clear of belt and other parts when engine is started.
3. Fully close hydraulic pressure gauge valve with engine at idle. Measure relief pressure.
Relief pressure specification:
8,000 - 8,800 kPa (81.4 - 87.3 bar, 83 - 89 kg/cm2 , 1,180 - 1,266 psi)
4. After measurement, open valve slowly.
CAUTION:
Never keep valve closed for 15 seconds or longer.
● If relief pressure is outside specification, disassemble and service oil pump. Refer to PS-25, "Disas-
sembly and Assembly(QR20DE and QR25DE engine models)" .
5. After inspection, remove oil pressure gauge from hydraulic circuit. Add fluid. Be sure to bleed the system
completely. Refer to PS-6, "Bleeding Hydraulic System"
Removal and Installation (QR20DE and QR25DE engine models) EGS000AG
REMOVAL
1. Loosen adjusting screw and oil pump mounting bolt. Then, remove belt.
2. Remove union bolt and hose for oil pump.
3. Remove oil pump bracket attaching bolt.
4. Remove oil pump from vehicle.
INSTALLATION
Paying attention to following items, install in the reverse order of removal.
● After installation, adjust belt tension. Refer to EM-13, "DRIVE BELTS" .
● After installation, be sure to bleed system. Refer to PS-6, "Bleeding Hydraulic System" .
PS-24
POWER STEERING OIL PUMP
SGIA0645E
SST984A M
DISASSEMBLY
1. Fix power steering pump in a vise.
CAUTION:
When fixing pump in a vise, use aluminum plates to protect steering pump mounting surface.
2. Remove rear bracket mounting bolts. Remove rear bracket from rear body.
3. Remove three front bracket attaching bolts and remove front bracket from casing.
4. Remove four rear body attaching bolts and remove rear body from casing.
5. Remove body seal from casing.
6. Remove side plate (rear) from cartridge. Remove side plate inner and outer seals from side plate (rear).
PS-25
POWER STEERING OIL PUMP
7. Remove rotor snap ring using a snap ring pliers and remove pul-
ley from casing.
CAUTION:
When removing rotor snap ring, be careful not to damage
pulley shaft.
8. Remove following parts from casing: cartridge, rotor, vane, side
plate (front), flow control valve A, flow control valve spring, and
flow control valve B assembly
CAUTION:
Do not drop flow control A valve and flow control B valve
assembly to floor. If dropped, they may be deformed. SGIA0059E
9. Remove inlet connector attaching bolt and remove inlet connector from casing.
10. Remove inlet connector seal from inlet connector.
11. Using a screwdriver or equivalent tool, remove drive shaft seal from casing.
CAUTION:
Be careful not to damage casing surface with screwdriver.
INSPECTION AFTER DISASSEMBLY
Inspecting Casing and Rear Body
● Check casing and rear body for internal damage. If rear body is damaged, replace rear body. If casing is
damaged, replace power steering pump assembly.
Cartridge Inspection
● Check cartridge for damage. If damaged, cartridge, rotor, and vane must be replaced as a set.
Inspecting Side Plate
● Check side plates (front and rear) for damage. If damaged, side plates (front and rear) must be replaced
as a set.
ASSEMBLY
1. Apply multi-purpose grease to lip of drive shaft seal. Using a
drift, install drive shaft seal to casing.
CAUTION:
Drive shaft seal is not reusable. Never reuse drive shaft
seal.
2. If removed dowel pin cannot be inserted to casing by hand, tap
it with hammer.
SST038A
3. Connect flow control valve A, flow control valve spring and flow
control valve B assembly as shown.
SGIA0061E
PS-26
POWER STEERING OIL PUMP
SGIA0062E
D
5. Install cartridge onto front side plate with smaller slit of cartridge
facing casing.
6. Connect pulley to casing. E
CAUTION:
Be careful not to damage drive shaft seal when installing
pulley.
F
PS
SST497A
K
7. Connect rotor to pulley shaft with punch mark on rotor facing
casing.
L
SST289A
SST843A
PS-27
POWER STEERING OIL PUMP
SGIA0063E
10. Align dowel pin A on flow control valve A with notch B in side
plate (rear) as shown. Install side plate (rear) to cartridge.
11. Apply DEXRONTM III or equivalent to body seal. Install it to cas-
ing.
CAUTION:
Body seal is not reusable. Never reuse body seal.
SGIA0064E
12. Apply DEXRONTM III or equivalent to side plate inner and outer
seals. Install them to side plate (rear).
CAUTION:
Side plate inner and outer seals are not reusable. Never
reuse side plate inner and outer seals.
13. Fix power steering pump in a vise.
CAUTION:
When fixing pump in a vise, use aluminum plates to protect
steering pump mounting surface.
14. Attach rear body to casing and tighten four mounting bolts diag- SGIA0065E
onally to specified torque.
15. Install rear bracket to rear body. Tighten mounting bolts to specified torque.
16. Connect front bracket to casing and tighten mounting bolts (3) to specified torque.
17. Connect inlet connector seal to inlet connector slit. Install inlet connector to casing with attaching bolts.
CAUTION:
Inlet connector seal is not reusable. Never reuse inlet connector seal.
Removal and Installation (YD22DDTi engine model) EGS000AI
SST884C
PS-28
POWER STEERING OIL PUMP
SST885C
D
5. Remove power steering pump fixing bolts, then remove it.
PS
SST886C
SST890C
K
PS-29
POWER STEERING OIL PUMP
SGIA0646E
SST883C
PS-30
POWER STEERING OIL PUMP
DISASSEMBLY
CAUTION: A
● Parts which can be disassembled are strictly limited. Never disassemble parts other than those
specified.
● Disassemble in as clean a place as possible. B
● Clean your hands before disassembly.
● Do not use rags; use nylon cloths or paper towels.
● Follow the procedure and cautions in the Service Manual. C
● When disassembling and reassembling, do not let foreign matter enter or contact the parts.
1. Remove rear bracket and rear body.
D
2. Remove side plate seal, cam ring, vane, rotor and side plate.
SST887C
PS
3. Remove out connector and then remove connector seal, flow
control valve and flow control valve spring.
CAUTION: H
● Be careful not to drop the flow control valve.
J
SST036A
SST888C
SST889C
PS-31
POWER STEERING OIL PUMP
SST036A
SST289A
SST843A
PS-32
POWER STEERING OIL PUMP
4. Insert pin 2 into pin groove 1 of front housing and front side
plate. Then install cam ring 3 as shown at left. A
Cam ring : D1 is less than D2
PS
SST472C
PS-33
HYDRAULIC LINE
CAUTION:
Securely insert harness connector to oil pressure sensor.
QR20DE LH MODEL
SGIA0944E
PS-34
HYDRAULIC LINE
QR20DE RH MODEL
C
PS
SGIA0945E
PS-35
HYDRAULIC LINE
QR25DE LH MODEL
SGIA0946E
PS-36
HYDRAULIC LINE
QR25DE RH MODEL
C
PS
SGIA0947E
PS-37
HYDRAULIC LINE
SGIA0514E
SGIA0854E
PS-38
HYDRAULIC LINE
A
CAUTION:
Securely insert harness connector to oil pressure sensor.
YD22DDTi LH MODEL B
PS
SGIA0948E
PS-39
HYDRAULIC LINE
YD22DDTi RH MODEL
SGIA0949E
PS-40
HYDRAULIC LINE
E
SGIA0514E
PS
SGIA0854E
I
PS-41
SERVICE DATA AND SPECIFICATIONS (SDS)
Wheel EGS0004P
STC1136D
SGIA0462E
PS-42
SERVICE DATA AND SPECIFICATIONS (SDS)
A
Steering gear model PR24AD
Rack neutral position,
66.5 mm (2.618 in)
dimension (L)
B
SGIA0463E
D
Adjusting screw lock nut tightening torque 39 - 59 N·m (4.0 - 6.0 kg-m, 29 - 43 ft-lb)
Primary Adjusting screw tightening torque 4.9 - 5.9 N·m (0.5 - 0.6 kg-m, 44 - 52 in-lb)
Retainer adjustment E
Re-tightening torque after tightened 4.9 - 5.9 N·m (0.5 - 0.6 kg-m, 44 - 52 in-lb)
Loosen the adjusting screws. 60 - 80°
Range within ±11.5 mm from 1.67 - 2.25 N·m (0.17 - 0.22 kg-m, 1.3 - 1.6 F
Area average value
neutral position ft-lb)
(Power ON) Allowable variation 0.98 N·m (0.10 kg-m, 1 ft-lb) or less
Rack sliding torque:
Peak value 2.94 N· m (0.30 kg-m, 2 ft-lb) or less PS
Whole area (at power OFF)
Allowable variation 1.47 N ·m (0.15 kg-m, 1 ft-lb) or less
Oil pump relief hydraulic pressure 8,000 - 8,800 (81.4 - 87.3 bar, 83 - 89 kg/cm2 , 1,180 - 1,266 psi)
PS-43
SERVICE DATA AND SPECIFICATIONS (SDS)
PS-44