power steering NISSAN X-TRAIL 2003 Electronic Owners Manual

POWER STEERING OIL PUMP
PS-25
C
D
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F
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B
PS
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.
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
lCheck 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
lCheck cartridge for damage. If damaged, cartridge, rotor, and vane must be replaced as a set.
Inspecting Side Plate
lCheck 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.
3. Connect flow control valve A, flow control valve spring and flow
control valve B assembly as shown.
SGIA0059E
SST038A
SGIA0061E

PS-26
POWER STEERING OIL PUMP
4. Align dowel pin A on flow control valve A with notch B in side
plate (front) as shown. Install side plate (front) to casing.
5. Install cartridge onto front side plate with smaller slit of cartridge
facing casing.
6. Connect pulley to casing.
CAUTION:
Be careful not to damage drive shaft seal when installing
pulley.
7. Connect rotor to pulley shaft with punch mark on rotor facing
casing.
SGIA0062E
SST497A
SST289A

POWER STEERING OIL PUMP
PS-27
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B
PS
8. Connect vane to rotor with arc of vane in contact with cartridge.
9. Connect rotor snap ring to slit of pulley shaft, using a hammer
and a 10-mm socket.
CAUTION:
lRotor snap ring is not reusable. Never reuse rotor snap
ring.
lBe careful not to damage rotor and pulley shaft.
lIf rotor is damaged, power steering pump assembly must
be replaced.
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 Nissan Power Steering Fluid or Nissan Power Steering
Fluid II to body seal. Install it to casing.
CAUTION:
Body seal is not reusable. Never reuse body seal.
12. Apply Nissan Power Steering Fluid II 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-
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.
SST843A
SGIA0063E
SGIA0064E
SGIA0065E

PS-28
POWER STEERING OIL PUMP
Removal and Installation (YD22DDTi engine model)
EGS000AI
1. Remove chain case cover.
2. Revolving crank pulley, set tool.
3. Fix tool with chain cover fixing bolts.
4. Using suitable tool, remove sprocket fixing nut and washer.
CAUTION:
Do not remove Tool while power steering oil pump is
removed.
5. Remove power steering pump fixing bolts, then remove it.
6. Apply Gasket to the installation surface of the engine chain case
cover as shown in the figure before installing the chain case
cover to the engine.
7. Bleed air after installation. Refer toPS-5, "
Bleeding Hydraulic
System"
SST884C
SST885C
SST886C
SST890C

POWER STEERING OIL PUMP
PS-29
C
D
E
F
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B
PS
Disassembly and Assembly (YD22DDTi engine model)EGS000AJ
INSPECTION BEFORE DISASSEMBLY
Disassemble power steering oil pump only when any of following
cases meets.
lIf oil leak is found on oil pump.
lOil pump pulley is deformed or damaged.
lPerformance of oil pump is low.
SST882CA
1 Rear bracket 2 Rear body 3 Dowel pin
4 Side plate seal 5 Cam ring 6 Vane
7 Rotor 8 Side plate 9 O-ring (Outer)
10 O-ring (Inner) 11 Front body 12 Drive shaft rear oil sear
13 Drive shaft front oil seal 14 Drive shaft 15 Snap ring
16 O-ring 17 Outlet connector 18 Connector seal
19 Flow control valve 20 Flow control valve spring 21 Inlet connector
22 O-ring 23 Washer
SST883C

PS-30
POWER STEERING OIL PUMP
DISASSEMBLY
CAUTION:
lParts which can be disassembled are strictly limited. Never disassemble parts other than those
specified.
lDisassemble in as clean a place as possible.
lClean your hands before disassembly.
lDo not use rags; use nylon cloths or paper towels.
lFollow the procedure and cautions in the Service Manual.
lWhen disassembling and reassembling, do not let foreign matter enter or contact the parts.
1. Remove rear bracket and rear body.
2. Remove side plate seal, cam ring vane, rotor side and plate.
3. Remove inlet connector and outlet connector with spring.
CAUTION:
lBe careful not to drop the flow control valve.
lDo not disassemble the flow control valve.
4. Remove oil seal
5. Remove snap ring, then draw drive shaft.
CAUTION:
Be careful not to drop drive shaft.
SST887C
SST036A
SST888C
SST889C

POWER STEERING OIL PUMP
PS-31
C
D
E
F
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B
PS
INSPECTION AFTER DISASSEMBLY
lIf pulley is cracked or deformed, replace it.
lIf an oil leak is found around pulley shaft oil seal, replace the seal.
lIf serration on pulley or pulley shaft is deformed or worn, replace it.
ASSEMBLY
1. Assemble oil pump, noting the following instructions.
lMake sure O-rings and oil seal are properly installed.
lAlways install new O-rings and oil seal.
lBe careful of oil seal direction.
lCam ring, rotor and vanes must be replaced as a set if neces-
sary.
lCoat each part with Nissan power steering fluid II or equiva-
lent when assembling.
2. Pay attention to the direction of rotor.
3. When assembling vanes to rotor, rounded surfaces of vanes
must face cam ring side.
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.
Cam ring :D
1is less than D2
SST472C

PS-36
SERVICE DATA AND SPECIFICATIONS (SDS)
Steering Gear
EGS0004T
Oil PumpEGS0004U
Steering FluidEGS0004V
Steering gear model PR24AD
Rack neutral position, dimen-
sion (L)66.5 mm (2.618 in)
Retainer adjustmentScrew lock nut
Tightening torque40 - 58 N·m (4.1 - 5.9 kg·m,29 - 43 ft·lb)
Primary tightening torque 4.9 - 5.9 N·m (0.5 - 0.6 kg·m,44 - 52 in·)
Re-tightening torque after tightened4.9 - 5.9 N·m (0.5 - 0.6 kg·m 44 - 52
in·lb)
Loosen the adjusting screws. 60 - 80°
Rack sliding torque:Range within±11 .5 m m f r o m
neutral position
(Power ON)Area average value167 - 225 N·m (17 - 23 kg·m,123 - 166
ft·lb)
Allowable variation 98 N·m (10 kg·m,72 ft·lb) or less
Whole area (at power OFF)Peak value 294 N· m (30.0 kg·m,217 ft·lb) or less
Allowable variation 147 N ·m (15 kg·m,108 ft·) or less
STC0101D
Oil pump relief hydraulic pressure (MPa (kg/cm2))8.3+0.4
-0.2(85+4
-2)
Fluid capacity
Approx. 1.0 (7/8 lmp qt)

PRECAUTIONS
SRS-3
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SRS
PRECAUTIONSPFP:00001
Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER”
EHS000BG
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER” used along 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.
WA RN ING:
lTo 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 should be per-
formed by an authorized NISSAN/INFINITI dealer.
lImproper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
lDo 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 harness connector.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” ServiceEHS000BH
lDo not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
lBefore servicing the SRS, turn ignition switch “OFF”, disconnect battery ground cable and wait at least 3
minutes.
For approximately 3 minutes after the cables is removed, it is still possible for the air bag and seat belt
pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.
lDiagnosis sensor unit must always be installed with their arrow marks “Ü” pointing towards the front of the
vehicle for proper operation. Also check diagnosis sensor unit for cracks, deformities or rust before instal-
lation and replace as required.
lThe spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.
lHandle air bag module carefully. Always place driver and front passenger air bag modules with the pad
side facing upward and place front side air bag module standing with stud bolt side setting bottom.
lConduct self-diagnosis to check entire SRS for proper function after replacing any components.
lAfter air bag inflates, the front instrument panel assembly should be replaced if damaged.
Trouble Diagnosis PrecautionEHS000BI
Whenyoureadwiringdiagrams,refertothefollowings:
l“HOW TO READ WIRING DIAGRAMS” in GI section
lPG-2, "POWER SUPPLY ROUTING"in PG section
When you perform trouble diagnosis, refer to the followings:
l“HOW TO FOLLOW TEST GROUP IN TROUBLE DIAGNOSIS” in GI section
l“HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT” in GI section
Check for any service bulletins before servicing the vehicle.