wheel INFINITI QX56 2004 Factory Service Manual

MA-26
CHASSIS AND BODY MAINTENANCE
Revision: August 20072004 QX56
Indicated imbalance value × 5/3 = balance weight to be installed
Calculation example:
23 g (0.81 oz) × 5/3 = 38.33 g (1.35 oz) = 40 g (1.41 oz) balance
weight (closer to calculated balance weight value)
Note that balance weight value must be closer to the calculated
balance weight value.
Example:
37.4 g = 35 g (1.23 oz)
37.5 g = 40 g (1.41 oz)
a. Install balance weight in the position shown.
b. When installing balance weight to wheels, set it into the grooved
area on the inner wall of the wheel as shown so that the balance
weight center is aligned with the wheel balancer indication posi-
tion (angle).
CAUTION:

Always use Genuine NISSAN adhesion balance weights.

Balance weights are not reusable; always replace with
new ones.

Do not install more than three sheets of balance weights.
c. If calculated balance weight value exceeds 50 g (1.76 oz), install
two balance weight sheets in line with each other as shown.
CAUTION:
Do not install one balance weight sheet on top of another.
3. Start wheel balancer again.
4. Install drive-in balance weight on inner side of road wheel in the
wheel balancer indication position (angle).
CAUTION:
Do not install more than two balance weights.
5. Start wheel balancer. Make sure that inner and outer residual
imbalance values are 5 g (0.18 oz) each or below.

If either residual imbalance value exceeds 5 g (0.18 oz), repeat installation procedures.
SM A05 4D
WDIA0060E
SM A05 6D

CHASSIS AND BODY MAINTENANCE
MA-27
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Revision: August 20072004 QX56
Wheel Balance
Tire RotationELS0010P
1. Rotate the tires on each side from front to back as shown.

Do not include the same spare tire when rotating the tires.
2. Adjust the tire pressure to specification. Refer to WT-33, "
Tire" .
3. After the tire rotation, retighten the wheel nuts after the vehicle has been driven for 1,000 km (600 miles),
and also after a wheel and tire have been installed such as after repairing a flat tire.
Checking Brake Fluid Level and LeaksELS0010Q

Check the brake fluid level in the reservoir tank. It should be
between the “MAX” and “MIN” lines on the reservoir tank.

If the fluid level is extremely low, check the brake system.

If the brake warning lamp comes on when the fluid is at the cor-
rect level, check the brake fluid level switch and the parking
brake switch.
Checking Brake Lines and CablesELS0010R
1. Check the brake lines and hoses for cracks, deterioration, and
other damage. Replace any damaged parts.
CAUTION:
If brake fluid leaks are visible around the brake line joints,
retighten the joint, or replace damaged parts as necessary.
2. Check for brake fluid leaks by fully depressing brake pedal while
engine is running.
Wheel type AluminumSteel
Inside Outside
Maximum radial
runout limitLateral mm (in) 0.3 (0.012) or less 1.0 (0.039) or less 0.9 (0.035) or less
Radial mm (in) 0.3 (0.012) or less 0.8 (0.031) or less 0.4 (0.016) or less
Maximum residual
imbalanceDynamic
(at rim flange)Less than 5 g (0.18 oz) (per side)
Static (at rim flange) Less than 10 g (0.35 oz)
Wheel nuts : Refer to WT-6, "Rotation" .
AM A15 9
WFIA0173E
SBR3 89 C

CHASSIS AND BODY MAINTENANCE
MA-29
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MA
Revision: August 20072004 QX56
Checking Power Steering Fluid and LinesELS0010U
CHECKING FLUID LEVEL

Check the power steering fluid level with the engine off.

Check fluid level on reservoir. Use “HOT” range at fluid tempera-
tures of 50° to 80°C (122° to 176°F). Use “COLD” range at fluid
temperatures of 0° to 30°C (32° to 86°F).
CAUTION:

Do not overfill.

Refer to MA-10, "Fluids and Lubricants" .
CHECKING LINES

Check lines for improper attachment, leaks, cracks, damage,
loose connections, chafing and deterioration.
Checking Axle and Suspension PartsELS0010V
FRONT AND REAR AXLE AND SUSPENSION PARTS
Check front and rear axle and suspension parts for excessive play, cracks, wear or other damage.

Shake each wheel to check for excessive play.

Rotate each wheel to check for abnormal noise.

Check axle and suspension nuts and bolts for looseness.

Check the strut and shock absorber for oil leakage or other damage.

Check suspension ball joints for grease leakage and ball joint dust cover for cracks or other damage.
DRIVE SHAFT
Check the boots and drive shaft for cracks, wear, damage, and
grease leakage.
LGIA0021E
SGIA0506E
SM A52 5A
SFA90 1

PARKING BRAKE SYSTEM
PB-3
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PB
Revision: August 20072004 QX56
PARKING BRAKE SYSTEMPFP:36010
On-Vehicle ServiceEFS003Q4
PEDAL STROKE

When parking brake pedal is operated with the specified force, make sure the stroke is within the specified
number of notches. Check by listening and counting the ratchet clicks.
INSPECTION

Make sure the components are attached properly, checking for looseness or backlash.

Check parking brake pedal assembly for bends, damage and cracks, and replace if necessary.

Check cable for wear and damage, and replace if necessary.

Check parking brake warning lamp switch for malfunction, and replace if necessary. Refer to DI-32, "Wir-
ing Diagram — WARN —" .
ADJUSTMENT
1. Remove lower driver instrument panel. Refer to IP-13, "Instrument Lower Cover LH" .
2. Partially engage parking brake pedal to access adjusting nut.
3. Insert a deep socket wrench to rotate adjusting nut and loosen
cable sufficiently. Then, disengage the parking brake pedal.
4. Remove the wheel and tire using power tool.
5. Remove the rotor and measure inner diameter at widest point
using Tool.
6. Transfer measurement less 0.6 mm to the parking brake shoes
and adjust accordingly.
7. Using wheel nuts, secure the disc to the hub to prevent it from
tilting.
8. Rotate disc rotor to make sure there is no drag.
9. Adjust cable as follows:
a. Operate pedal 10 or more times with a force of 490 N (50 kg,
11 0 l b ) .
b. Rotate adjusting nut with deep socket to adjust pedal stroke to
specification.
c. With parking brake pedal completely disengaged, make sure
there is no drag on the parking brake.Pedal stroke : 3 − 4 notches [under force of 196 N (20.0 kg, 44.1 lb)]
WFIA0165E
Tool number : — (J-21177A)
Pedal stroke : 3 − 4 notches [under force of
196 N (20.0 kg, 44.1 lb)]
WFIA0166E

PB-6
PARKING BRAKE SHOE
Revision: August 20072004 QX56
PARKING BRAKE SHOEPFP:44060
Removal and InstallationEFS003Q7
COMPONENTS
REMOVAL
WAR NIN G:
Clean the brakes with a vacuum dust collector to minimize the hazard of airborne particles or other
materials.
NOTE:
Remove the disc rotor only with the parking brake pedal completely disengaged.
1. Remove the rear disc rotor. Refer to BR-28, "
Removal and Installation of Brake Caliper Assembly and
Disc Rotor" .
2. Remove the rear drive shaft. Refer to RAX-7, "
Removal and Installation" .
3. Disconnect ABS sensor at harness connector. Then remove ABS sensor wire from grommet mounts.
4. Remove wheel hub and bearing assembly. Refer to RAX-5, "
Removal and Installation" .

Withdraw ABS sensor harness through back plate when removing wheel hub and bearing assembly.
5. Remove the return springs.
6. Remove the adjuster.
7. Remove the retainers, anti-rattle pins and shoes.
8. Disconnect the parking brake cable from the toggle lever.
9. Remove back plate.
1. Back plate 2. Shoes 3. Toggle lever
4. Return springs 5. Retainers 6. Adjuster
7. Anti-rattle pins
WFIA0164E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
PR-3
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Revision: August 20072004 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS002JY
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PR-4
(front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
PR-4 (front)
PR-8 (rear)
FFD-7, "
NVH Troubleshooting Chart
" (front)
RFD-5, "
NVH Troubleshooting Chart
" (rear)
FA X-4, "
NVH Troubleshooting Chart
" (front)
RAX-4, "
NVH Troubleshooting Chart
" (rear)
FSU-4, "
NVH Troubleshooting Chart
" (front)
RSU-5, "
NVH Troubleshooting Chart
" (rear)
WT-3, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
FA X-4, "
NVH Troubleshooting Chart
" (front)
RAX-4, "
NVH Troubleshooting Chart
" (rear)
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and suspected parts
Uneven rotation torque
Rotation imbalance
Excessive run out
Differential
Axle
Suspension
Tire s
Road wheel
Drive shaft
Brakes
Steering
SymptomNoise×××××××××××
Shake×××××××
Vibration××× ××× × ×

PS-1
POWER STEERING SYSTEM
G STEERING
CONTENTS
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SECTION PS
A
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PS
Revision: August 20072004 QX56 PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Precautions for Steering System .............................. 2
PREPARATION ........................................................... 3
Special Service Tools (SST) ..................................... 3
Commercial Service Tools ........................................ 4
NOISE, VIBRATION, AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Troubleshooting Chart ..................................... 5
POWER STEERING FLUID ........................................ 6
Checking Fluid Level ................................................ 6
Checking Fluid Leakage ........................................... 6
Air Bleeding Hydraulic System ................................. 6
STEERING WHEEL .................................................... 7
On-Vehicle Inspection and Service .......................... 7
CHECKING CONDITION OF INSTALLATION ...... 7
CHECKING STEERING WHEEL PLAY ................ 7
CHECKING NEUTRAL POSITION ON STEER-
ING WHEEL .......................................................... 7
CHECKING STEERING WHEEL TURNING
FORCE .................................................................. 7
CHECKING FRONT WHEEL TURNING ANGLE ..... 7
Removal and Installation .......................................... 8
REMOVAL ............................................................. 8
INSTALLATION ..................................................... 8
TILT SYSTEM ............................................................. 9
Removal and Installation .......................................... 9
TILT MOTOR AND TILT SENSOR ........................ 9
STEERING COLUMN ............................................... 10
Removal and Installation ........................................ 10
REMOVAL ........................................................... 10
INSPECTION AFTER REMOVAL ........................11
INSTALLATION ....................................................11INSPECTION AFTER INSTALLATION ................ 12
Disassembly and Assembly .................................... 13
DISASSEMBLY ................................................... 13
ASSEMBLY ......................................................... 14
INSPECTION AFTER ASSEMBLY ...................... 14
POWER STEERING GEAR AND LINKAGE ............ 15
Removal and Installation ........................................ 15
REMOVAL ........................................................... 15
INSTALLATION ................................................... 16
INSPECTION AFTER INSTALLATION ................ 17
Disassembly and Assembly .................................... 17
DISASSEMBLY ................................................... 18
INSPECTION AFTER DISASSEMBLY ................ 20
ASSEMBLY ......................................................... 21
POWER STEERING OIL PUMP ............................... 26
On-Vehicle Inspection and Service ......................... 26
CHECKING RELIEF OIL PRESSURE ................ 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSTALLATION ................................................... 26
Disassembly and Assembly .................................... 27
INSPECTION BEFORE DISASSEMBLY ............. 27
DISASSEMBLY ................................................... 27
INSPECTION AFTER DISASSEMBLY ................ 28
ASSEMBLY ......................................................... 28
HYDRAULIC LINE .................................................... 31
Removal and Installation ........................................ 31
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 33
Steering Wheel ....................................................... 33
Steering Column ..................................................... 33
Steering Outer Socket and Inner Socket ................ 34
Steering Gear ......................................................... 35
Oil Pump ................................................................. 35
Steering Fluid .......................................................... 35

PS-4
PREPARATION
Revision: August 20072004 QX56
Commercial Service ToolsEGS000ML
1. KV48105300-4 and 5295262U10
( — )
Connector A and O-ring
2. KV48105300-3 and 5295262U00
( — )
Eye-bolt and O-ring
3. KV48103500
(J26357 and J26357-10)
Pressure gauge and shut-off valve
4. KV48105300-1 and 5295262U00
( — )
Connector B and O-ring
5. KV48105300-2
( — )
NutMeasuring oil pump relief pressure
KV481J0010
(J-1859A)
Steering wheel pullerRemoving steering wheel
KV481J0020
(J-42578)
Steering wheel puller legsRemoving steering wheel
KV40107300
(—)Crimping boot bands
—
(J-44372)
Spring gaugeMeasuring steering wheel turning force Tool number
(Kent-Moore No.)
Tool nameDescription
SGIA0427E
LHIA0043E
LHIA0044E
ZZA1229D
LST024
Tool nameDescription
Power toolRemoving nuts and bolts
PBIC0190E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
PS-5
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Revision: August 20072004 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEGS000MM
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
PS-6PS-6PS-20PS-20PS-20PS-6PS-7PS-7EM-12PS-7PS-13PS-15PS-11PS-10PS-15
PR-3, "
NVH Troubleshooting Chart
"
FFD-7, "
NVH Troubleshooting Chart
"
FA X-4, "
NVH Troubleshooting Chart
"
FSU-4, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
WT-3, "
NVH Troubleshooting Chart
"
FA X-4, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
Possible cause and sus-
pected parts
Fluid level
Air in hydraulic system
Outer socket ball joint swinging force
Outer socket ball joint rotating torque
Outer socket ball joint end play
Steering fluid leakage
Steering wheel play
Steering gear rack sliding force
Drive belt looseness
Improper steering wheel
Improper installation or looseness of tilt lock lever
Mounting rubber deterioration
Steering column deformation or damage
Improper installation or looseness of steering column
Steering linkage looseness
PROPELLER SHAFT
FRONT FINAL DRIVE
WHEEL HUB
FRONT SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
SymptomNoise× × ××××× × × ××××××× ×
Shake××× × ××××× ×
Vibration××××× × ××× ×
Shimmy××× × ×××× ×
Shudder× × ×××× ×

PS-6
POWER STEERING FLUID
Revision: August 20072004 QX56
POWER STEERING FLUIDPFP:KLF20
Checking Fluid LevelEGS000MN
Check fluid level, referring to the scale on reservoir tank.
Use HOT range for fluid temperatures of 50° – 80°C (122° – 176°F).
Use COLD range for fluid temperatures of 0° – 30°C (32° – 86°F).
CAUTION:

Do not overfill.

Do not reuse any used power steering fluid.

Recommended fluid is Genuine NISSAN PSF or equivalent.
Refer to MA-10, "
RECOMMENDED FLUIDS AND LUBRI-
CANTS" .
Checking Fluid LeakageEGS000MO
Check the hydraulic piping lines for improper attachment and for
leaks, cracks, damage, loose connections, chafing or deterioration.
1. Run engine until fluid temperature reaches 50° – 80°C (122° –
176°F) in reservoir tank. Keep engine speed idle.
2. Turn steering wheel right-to-left several times.
3. Hold steering wheel at each “lock” position for five seconds to
check fluid leakage.
CAUTION:
Do not hold steering wheel in a locked position for more
than 10 seconds. (There is the possibility that oil pump may
be damaged.)
4. If fluid leakage at connections is noticed, then loosen flare nut and then retighten. Do not over tighten con-
nector as this can damage O-ring, washer and connector.
5. If fluid leakage from oil pump is noticed, check oil pump. Refer to PS-26, "
POWER STEERING OIL
PUMP" .
6. Check steering gear boots for accumulation of fluid indicating a leak from the steering gear.
Air Bleeding Hydraulic SystemEG S0 0 0MP
Incomplete air bleeding causes the following. When this happens, bleed air again.

Air bubbles in reservoir tank.

Clicking noise in oil pump.

Excessive buzzing in oil pump.
NOTE:
When vehicle is stationary or while steering wheel is being turned slowly, some noise may be heard from
oil pump or gear. This noise is normal and does not affect any system.
1. Stop engine, and then turn steering wheel fully to right and left several times.
CAUTION:
Do not allow steering fluid reservoir tank to go below the MIN level line. Check tank frequently and
add fluid as needed.
2. Run engine at idle speed. Turn steering wheel fully right and then fully left, hold for about three seconds.
Then check for fluid leakage.
3. Repeat step 2 several times at about three second intervals.
CAUTION:
Do not hold steering wheel in the locked position for more than 10 seconds. (There is the possibil-
ity that oil pump may be damaged.)
4. Check for air bubbles or cloudy fluid.
5. If air bubbles or cloudiness still exists, stop engine, perform steps 2 and 3 again until air bubbles or cloud-
iness does not exist.
6. Stop engine, check fluid level.
LGIA0021E
SGIA0506E