suspension NISSAN X-TRAIL 2003 Electronic Service Manual

PS-12
POWER STEERING GEAR AND LINKAGE
POWER STEERING GEAR AND LINKAGE
PFP:49001
Removal and InstallationEGS0004I
REMOVAL
1. Remove cotter pin, and loosen mounting nut. Remove tie rod from steering knuckle with a pitman arm
puller.
CAUTION:
lBe careful not to damage dust boot at ball joint of tie rod.
lBefore 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
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.
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.
6. Tilt steering gear to prevent any contact with other parts. Then remove it from right side of vehicle.
INSTALLATION
Paying attention to following items, install in the reverse order of removal.
lAfter installation, bleed air. Refer toPS-5, "Bleeding Hydraulic System".
lRemove 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.
lCheck 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.
SGIA0009E
1 Power steering gear assembly 2 Power steering tube bracket 3 Cotter pin
SGIA0105E

RAX-2
PRECAUTIONS
PRECAUTIONS
PFP:00001
CautionEDS00060
Observe the following precautions when disassembling and servicing drive shaft.
lPerform work in a location which is as dust-free and dirt-free as possible.
lBefore disassembling and servicing, clean the outside of parts.
lThe disassembly and service location must be clean. Care must be taken to prevent parts from becoming
dirty and to prevent the entry of foreign objects.
lDisassembled parts must be carefully reassembled in the correct order. If work is interrupted, a clean
cover must be placed over parts.
lPaper shop cloths must be used. Fabric shop cloths must not be used because of the danger of lint adher-
ing to parts.
lDisassembled parts (except for rubber parts) should be cleaned with kerosene which shall be removed by
blowing with air or wiping with paper shop cloths.
Precautions for Brake SystemEDS0 00 I2
lWhen installing rubber parts, final tightening must be carried out
under unladen condition* with tires on ground.
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
lUse flare nut wrench when removing or installing brake tubes.
lAfter installing removed suspension parts, check wheel align-
ment and adjust if necessary.
lAlways torque brake lines when installing.
SBR686C

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
RAX-5
C
E
F
G
H
I
J
K
L
MA
B
RAX
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS0 00 F K
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
´: ApplicableReference page
—
Refer toRAX-11—
Refer toRAX-6—
NVHinPRsection.
NVH in RFD section.
NVHinFAXandFSUsections.
Refer to REAR AXLE in this chart.
NVH in WT section.
NVH in WT section.
Refer to DRIVE SHAFT in this chart.
NVHinBRsection.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Excessive joint angle
Joint sliding resistance
Imbalance
Improper installation, looseness
Parts interference
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE
TIRES
ROAD WEEL
DRIVE SHAFT
BRAKES
STEERING
SymptomDRIVE
SHAFTNoise´´ ´´´´´´ ´´
Shake´´ ´´´´´´´
REAR
AXLENoise´´ ´´´ ´´´´´
Shake´´ ´ ´ ´´´´´
Vibration´´´´´´´
Shimmy´´ ´´´´´
Judder´ ´ ´´ ´´
Poor quality ride or handling´´ ´ ´´

RFD-2
PRECAUTIONS
PRECAUTIONS
PFP:00001
CautionEDS00056
lBefore starting diagnosis of the vehicle, understand symptoms well. Perform correct and systematic oper-
ations.
lCheck for the correct installation status prior to removal or disassembly. When mating marks are required,
be sure they do not interfere with the function of the parts they are applied to.
lCarry out an overhaul in a clean work place. Using a dust proof room is recommended.
lBefore disassembly, using steam or white gasoline, completely remove sand and mud from the exterior of
the unit, preventing them from entering into the unit during disassembly or assembly.
lCheck appearance of the disassembled parts for damage, deformation, and abnormal wear. If a malfunc-
tion is detected, replace it with a new one.
lNormally replace lock pins, oil seals, and bearings with new ones every time they are removed.
lIn principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If
tightening sequence is specified, observe it.
lClean and flush the parts sufficiently and blow them dry.
lBe careful not to damage the sliding surfaces and mating surfaces.
lWhen applying sealant, remove the old sealant from the mounting surface; then remove any moisture, oil,
and foreign materials from the application and mounting surfaces.
lAlways use shop paper for cleaning the inside of components.
lAvoid using cotton gloves or a shop cloth to prevent entering of lint.
lDuring assembly, observe the specified tightening torque, and apply new differential oil, Vaseline, or Nis-
san MP Special Grease No. 2, as specified for each vehicle, when necessary.
lDo not reuse drained oil. Discard waste oil after oil changes or part treatment in accordance with local
laws and regulations.
Precautions for Brake SystemEDS000HX
lWhen installing rubber parts, final tightening must be carried out
under unladen condition* with tires on ground.
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
lAfter installing removed suspension parts, check wheel align-
ment and adjust if necessary.
lUse flare nut wrench when removing or installing brake tubes.
lAlways torque brake lines when installing.
SBR686C

REAR FINAL DRIVE ASSEMBLY
RFD-11
C
E
F
G
H
I
J
K
L
MA
B
RFD
REAR FINAL DRIVE ASSEMBLYPFP:38300
Removal and InstallationEDS000DG
REMOVAL
1. Remove rear suspension assembly. Refer toRSU-5, "REAR SUSPENSION ASSEMBLY".
2. Remove propeller shaft. Refer toPR-3, "
Removal and Installation".
3. Remove drive shaft. Refer toRAX-9, "
REAR DRIVE SHAFT".
4. Remove ABS sensor connector. With 4WD/ABS refer toBRC-50, "
Removal and Installation", With ESP/
TCS/ABS refer toBRC-120, "
Removal and Installation"
5. Remove air breather hose (for electronically controlled coupling and for rear final drive). Refer toRFD-12,
"Electronically Controlled Coupling Breather Hose",RFD-13, "Rear Final Drive Breather Hose".
6. Remove brake tube (and bleed air in the brake piping). Refer toBR-12, "
Removal and Installation of Rear
Brake Piping and Brake Hose".
INSTALLATION
Install in the reverse order of the removal.
CAUTION:
lAfter installation, bleed air in the brake system and check oil level in the final drive.
lKeep the air breather hose to exhaust tube clearance for at least 40 mm (1.57 in).
SDIA0108E
1 Propeller shaft 2 Final drive assembly 3 Drive shaft
4 Final drive mounting bracket 5 Suspension member

RSU-1
REAR SUSPENSION
E SUSPENSION
CONTENTS
C
D
F
G
H
I
J
K
L
M
SECTION
A
B
RSU
REAR SUSPENSION
PRECAUTIONS .......................................................... 2
Caution ..................................................................... 2
Precautions for Brake System .................................. 2
PREPARATION ........................................................... 3
Special Service Tool ................................................. 3
Commercial Service Tools ........................................ 3
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 4
NVH Troubleshooting Chart ..................................... 4
REAR SUSPENSION ASSEMBLY ............................. 5
Components ............................................................. 5
On-Vehicle Inspection and Service .......................... 6
Wheel Alignment ...................................................... 6
DESCRIPTION ...................................................... 6
PRELIMINARY INSPECTION ............................... 6
CAMBER ............................................................... 6
TOE-IN .................................................................. 6
COIL SPRING AND STRUT ....................................... 8
Removal and Installation .......................................... 8
REMOVAL ............................................................. 8
INSTALLATION ..................................................... 8
Disassembly and Assembly ..................................... 8
DISASSEMBLY ..................................................... 8
INSPECTION AFTER DISASSEMBLY ................. 8
ASSEMBLY ........................................................... 9FRONT PARALLEL LINK ......................................... 10
Removal and Installation ........................................ 10
REMOVAL ........................................................... 10
INSPECTION AFTER REMOVAL ....................... 10
INSTALLATION ................................................... 10
REAR PARALLEL LINK ........................................... 11
Removal and Installation ........................................ 11
REMOVAL ........................................................... 11
INSPECTION AFTER REMOVAL ....................... 11
INSTALLATION ................................................... 11
RADIUS ROD ............................................................ 12
Removal and Installation ........................................ 12
REMOVAL ........................................................... 12
INSPECTION AFTER REMOVAL ....................... 12
INSTALLATION ................................................... 12
REAR SUSPENSION MEMBER ............................... 13
Removal and Installation ........................................ 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 13
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 14
General Specification ............................................. 14
Wheel Alignment (Unladen) .................................... 14
Wheelarch Height (Unladen) .................................. 14

RSU-2
PRECAUTIONS
PRECAUTIONS
PFP:00001
CautionEES0007C
lFinal tightening of bushings must be carried out under unladen condition with tires on the ground. Oil will
shorten life of bushings. Be sure to wipe off any spilled oil.
l“Unladen condition” means that fuel, coolant and lubricant are full and ready for drive. However, spare tire,
jack, and hand tools should be unloaded.
lAfter installing the removed suspension parts, always check wheel alignment and adjust if necessary.
lReplace the caulking nut with a new one. Install a new nut without wiping the oil off before tightening.
Precautions for Brake SystemEES000JB
lWhen installing rubber parts, final tightening must be carried out
under unladen condition* with tires on ground.
*: Fuel, radiator coolant and engine oil full. Spare tire, jack,
hand tools and mats in designated positions.
lUse flare nut wrench when removing or installing brake tubes.
lAfter installing removed suspension parts, check wheel align-
ment and adjust if necessary.
lAlways torque brake lines when installing.
SBR686C

RSU-4
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
PFP:00003
NVH Troubleshooting ChartEES000IE
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
´: ApplicableReference page
Refer toRSU-5Refer toRSU-8
—
—
—
Refer toRSU-5
Refer toRSU-6Refer toRSU-5NVHinPRsection.
NVH in RFD section.
NVH in FAX and FSU sections.
NVH in WT section.
NVH in WT section.
NVH in RAX section.
NVHinBRsection.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Shock absorber deformation, damage or deflection
Bushing or mounting deterioration
Parts interference
Spring fatigue
Suspension looseness
Incorrect wheel alignment
Stabilizer fatigue
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom REAR SUSPENSIONNoise´´´´´´ ´´´´´´´´
Shake´´´´ ´ ´ ´´´´´´
Vibration´´´´´ ´ ´´ ´ ´
Shimmy´´´´ ´ ´´´ ´´
Judder´´´ ´´´ ´´
Poor quality ride or
handling´´´´´ ´´ ´´´

REAR SUSPENSION ASSEMBLY
RSU-5
C
D
F
G
H
I
J
K
L
MA
B
RSU
REAR SUSPENSION ASSEMBLYPFP:55020
ComponentsEES0007E
SEIA0010E

RSU-6
REAR SUSPENSION ASSEMBLY
On-Vehicle Inspection and Service
EES0007F
Check axle and suspension parts for excessive play, wear, and damage.
lMove rear wheels (RH/LH) to check abnormal free play.
lRetighten all nuts and bolts to the specified torque.
lCheck strut for oil leakage and damage.
Wheel AlignmentEES0007G
DESCRIPTION
lMeasure wheel alignment under unladen conditions. “Unladen conditions” means that fuel, coolant, and
lubricant are full. However, spare tire, jack, and hand tools should be unloaded.
PRELIMINARY INSPECTION
1. Check the tires for improper air pressure and wear.
2. Check road wheels for runout.
3. Check wheel bearing axial endplay.
4. Check strut operation.
5. Check each mounting point of axle and suspension for looseness and deformation.
6. Check each link and arm for cracks, deformation, and other damage.
7. Check the vehicle posture.
CAMBER
Camber is preset at factory and cannot be adjusted.
lIf the camber is not within specification, inspect and replace any damaged or worn rear suspension parts.
TOE-IN
Measure toe-in using the following procedure.
lAlways perform following procedure on a flat surface.
lMake sure that no person is in front of the vehicle before push-
ing it.
1. Bounce rear of vehicle up and down to stabilize the posture.
2. Push the vehicle straight ahead about 5 m (16 ft).
3. Put a mark on base line of tread (rear side) of both tires at the
same height as hub center.this mark is a measuring points.
1 Strut spacer 2 Strut mounting insulator 3 Spring upper seat
4 Upper rubber seat 5 Bound bumper 6 Coil spring
7 Strut 8 Rear axle assembly 9 Rear suspension member
10 Stopper 11 Stopper 12 Eccentric disc
13 Rear parallel link 14 Toe-in adjusting bolt 15 Front parallel link
16 Radius rod 17 Stabilizer bar 18 Clamp
19 Bushing 20 Connecting rod
Camber :RSU-14, "SERVICE DATA AND SPECIFICATIONS (SDS)"
AFA050