INFINITI QX56 2004 Factory Service Manual

FSU-12
STABILIZER BAR
Revision: August 20072004 QX56
STABILIZER BARPFP:54611
Removal and InstallationEES0010M
REMOVAL
1. Remove engine under cover using power tool.
2. Remove stabilizer bar mounting bracket bolts and connecting
rod nuts as shown, using power tool.
3. Remove bushings from stabilizer bar.
INSPECTION AFTER REMOVAL

Check stabilizer bar for twist and deformation. Replace if necessary.

Check rubber bushing for cracks, wear and deterioration. Replace if necessary.
INSTALLATION
Installation is in the reverse order of removal.

Tighten all nuts and bolts to specification. Refer to FSU-5, "Components" .
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UPPER LINK
FSU-13
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FSU
Revision: August 20072004 QX56
UPPER LINKPFP:54524
Removal and InstallationEES0010N
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove wheel opening shield.
3. Remove cotter pin and nut from upper link ball joint.
4. Separate upper link ball joint stud from steering knuckle using
Tool.

Support lower link with jack.
5. Remove upper link mounting bolts and nuts.
INSPECTION AFTER REMOVAL
Upper Link
Check for deformation and cracks. Replace if necessary.
Upper Link Ball Joint
Check for distortion and damage. Replace if necessary.
INSTALLATION
Installation is in the reverse order of removal.

Tighten all nuts and bolts to specification. Refer to FSU-5, "Components" .

When installing wheel and tire, refer to WT-6, "Rotation" .

After installation, check that the front wheel alignment is within specification. Refer to FSU-6, "Front
Wheel Alignment" . Tool number : ST29020001 (J24319-01)
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FSU-14
LOWER LINK
Revision: August 20072004 QX56
LOWER LINKPFP:55020
Removal and InstallationEES0010O
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove lower shock absorber bolt.
3. Remove stabilizer bar connecting rod lower nut using power tool, then separate connecting rod from lower
link. Refer to FSU-12, "
Removal and Installation" .
4. Remove drive shaft, if equipped. Refer to FAX-7, "
Removal and Installation" .
5. Remove pinch bolt from steering knuckle using power tool, then
separate lower link ball joint from steering knuckle.
6. Remove lower link adjusting bolts and nuts, then the lower link.
INSPECTION AFTER REMOVAL
Lower Link
Check for deformation and cracks. Replace if necessary.
Lower Link Bushing
Check for distortion and damage. Replace if necessary.
INSTALLATION
Installation is in the reverse order of removal.

Tighten all nuts and bolts to specification. Refer to FSU-5, "Components" .

When installing wheel and tire, refer to WT-6, "Rotation" .

After installation, check that the front wheel alignment is within specification. Refer to FSU-6, "Front
Wheel Alignment" .
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UPPER BALL JOINT AND LOWER BALL JOINT
FSU-15
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FSU
Revision: August 20072004 QX56
UPPER BALL JOINT AND LOWER BALL JOINTPFP:40110
Removal and InstallationEES0010P
The ball joints are part of the upper and lower links. Refer to FSU-13, "Removal and Installation" (upper link),
FSU-14, "
Removal and Installation" (lower link).
InspectionEES0010Q

Check the ball joint for excessive play. Replace the upper or lower link assembly if any of the following
exists:

Ball joint stud is worn.

Ball joint is hard to swing.

Ball joint play in axial directions or end play is excessive.
SWINGING FORCE
NOTE:
Before checking the axial forces and end play, turn the lower ball joint at least 10 revolutions so that the ball
joint is properly broken in.
1. Measure the ball joint swinging force using a suitable tool.

Measure at the cotter pin hole for upper ball joint as shown.

Measure at the groove for lower ball joint as shown.
2. Verify the ball joint swinging force is within specification.
TURNING FORCE
Check the turning torque using a suitable tool.
NOTE:
Before checking the axial forces and end play, turn the lower ball
joint at least 10 revolutions so that the ball joint is properly broken in.
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Swinging force “A”
Upper ball joint : 8.1–103.2 N (0.8–10.5 kg-f,
1.8–23.2 lb-f)
Lower ball joint : 11.4–145.5 N (1.1–14.8 kg-f,
2.5–32.7 lb-f)
SFA858A
Turning torque “B” : 0.5 - 6.4 N·m (0.05 - 0.65 kg-m,
4 - 57 in-lb)
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FSU-16
UPPER BALL JOINT AND LOWER BALL JOINT
Revision: August 20072004 QX56
VERTICAL END PLAY

Measure the vertical end play using a suitable tool.

Check dust cover for damage. Replace it and the cover clamp if
necessary.
NOTE:
Before checking the axial forces and end play, turn the lower ball
joint at least 10 revolutions so that the ball joint is properly broken in.
Vertical end play “C” : 0 mm (0 in)
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KNUCKLE
FSU-17
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FSU
Revision: August 20072004 QX56
KNUCKLEPFP:40014
On-Vehicle Inspection and ServiceEES0010R
Make sure the mounting conditions (looseness, backlash) of each component and component status (wear,
damage) are within specifications. Refer to FSU-21, "
Ball Joint" .
Removal and InstallationEES0010S
REMOVAL
1. Remove wheel and tire from vehicle using power tool.
2. Without disconnecting the hydraulic lines, remove brake caliper using power tool. Reposition it aside with
wire. Refer to BR-22, "
Removal and Installation of Brake Caliper and Disc Rotor" .
CAUTION:
It is not necessary to remove bolts on torque member and brake hose except for disassembly or
replacement of caliper assembly. In this case, hang cylinder body with a wire so that the brake
hose in not under tension.
NOTE:
Avoid depressing brake pedal while brake caliper is removed.
3. Put alignment marks on disc rotor and wheel hub and bearing
assembly, then remove disc rotor.
4. Remove ABS sensor from steering knuckle. Refer to BRC-64, "
Removal and Installation" .
CAUTION:
Do not pull on ABS sensor harness.
5. Remove cotter pin, then remove lock nut from drive shaft using power tool.
6. Remove steering outer socket cotter pin at steering knuckle, then loosen mounting nut using power tool.
1. Disc rotor 2. Wheel hub and bearing assembly 3. Wheel stud
4. Splash guard 5. Steering knuckle
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FSU-18
KNUCKLE
Revision: August 20072004 QX56
7. Disconnect steering outer socket from steering knuckle using
Tool. Be careful not to damage ball joint boot.
CAUTION:
To prevent damage to threads and to prevent Tool from
coming off suddenly, temporarily install mounting nut
loosely.
8. Remove drive shaft, if equipped. Refer to FAX-7, "
Removal and Installation" .
9. Remove wheel hub and bearing assembly bolts using power tool.
10. Remove splash guard and wheel hub and bearing assembly from steering knuckle.
11. Support lower link using a suitable jack.
12. Remove cotter pin and nut from upper link ball joint.
13. Separate upper link ball joint from steering knuckle using Tool.
14. Remove pinch bolt from steering knuckle using power tool. Then
remove steering knuckle from lower link ball joint.
15. Remove steering knuckle from vehicle.
INSPECTION AFTER REMOVAL
Check for deformity, cracks and damage on each part, replace if necessary.

Perform ball joint inspection. Refer to FSU-15, "Inspection" . Tool number : HT72520000 (J-25730-A)
WGIA0130E
Tool number : ST29020001 (J-24319-01)
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KNUCKLE
FSU-19
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FSU
Revision: August 20072004 QX56
INSTALLATION
Installation is in the reverse order of removal.

Refer to FSU-5, "Components" for tightening torques.

When installing disc rotor on wheel hub and bearing assembly,
align the marks.
(When not using the alignment mark, refer to BR-25, "
DISC
ROTOR INSPECTION" .)

When installing wheel and tire, refer to WT-6, "Rotation" .
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FSU-20
SERVICE DATA AND SPECIFICATIONS (SDS)
Revision: August 20072004 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General Specifications (Front)EES0010T
Wheel Alignment (Unladen*1 )EES0012Y
*1: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.
*2: Target value 37° 31′ (37.52°)
*3: Target value 33° 59′ (33.98°)
*4: Target value 37° 44′ (37.73°)
*5: Target value 33° 29′ (33.48°) Suspension type Independent double wishbone coil over shock
Shock absorber type Double-acting hydraulic
StabilizerStandard equipment
Drive type2WD 4WD
Camber
Degree minute (decimal degree)Minimum -0° 51′ (-0.85°)-0° 33′ (-0.55°)
Nominal -0° 6′ (-0.10°)0° 12′ (0.20°)
Maximum 0° 39′ (0.65°)0° 57′ (0.95°)
Cross camber 0° 45′ (0.75°) or less 0° 45′ (0.75°) or less
Caster
Degree minute (decimal degree)Minimum 3° 15′ (3.25°)2°45′ (2.75°)
Nominal 4° 0′ (4.00°)3° 30′ (3.50°)
Maximum 4° 45′ (4.75°)4° 15′ (4.25°)
Cross caster 0° 45′ (0.75°) or less 0° 45′ (0.75°) or less
Kingpin inclination
Degree minute (decimal degree)13° 32′ (13.53°)13°13′ (13.22°)
Total toe-inDistance (A − B)Minimum 1.8 mm (0.07 in) 1.8 mm (0.07 in)
Nominal 2.8 mm (0.11 in) 2.8 mm (0.11 in)
Maximum 3.8 mm (0.15 in) 3.8 mm (0.15 in)
Angle (left side and right side)
Degree minute (decimal degree)Minimum 0° 3′ (0.05°)0° 3′ (0.05°)
Nominal 0° 5′ (0.08°)0° 5′ (0.08°)
Maximum 0° 7′ (0.12°)0° 7′ (0.12°)
Wheel turning angle
(full turn)Inside
Degree minute (decimal degree)34° 31′ – 38° 31′ *2
(34.52° – 38.52°)34° 44′ – 38° 44′ *4
(34.73° – 38.73°)
Outside
Degree minute (decimal degree)30° 59′ – 34° 59′ *3
(30.98° – 34.98°)30° 29′ – 34° 29′ *5
(30.48° – 34.48°)
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SERVICE DATA AND SPECIFICATIONS (SDS)
FSU-21
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FSU
Revision: August 20072004 QX56
Ball JointEES0013H
*1 Measure at cotter pin hole
*2 Measure at groove
Wheelarch Height (Unladen*1 )EES0010W
Unit: mm (in)
*1: Fuel, radiator coolant and engine oil full. Spare tire, jack, hand tools and mats in designated positions.
*2: Confirm level using Consult-II, register 1103. Set rear wheel arch height to “0” if necessary.Swinging force “A”Upper ball joint 8.1 – 103.2 N (0.8 – 10.5 kg-f, 1.8 – 23.2 lb-f) *1
Lower ball joint 11.4 – 145.5 N (1.1 – 14.8 kg-f, 2.5 – 32.7 lb-f) *2
Turning torque “B” 0.5 - 6.4 N·m (0.05 - 0.65 kg-m, 4 - 57 in-lb)
Vertical end play “C”0 mm (0 in)
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Suspension type
Air leveling*2
Applied model 2WD 4WD
Front wheelarch height (Hf)913
(35.94)931
(36.65)
Rear wheelarch height (Hr)912
(35.91)932
(36.69)
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