INFINITI QX56 2006 Factory Service Manual
Manufacturer: INFINITI, Model Year: 2006, Model line: QX56, Model: INFINITI QX56 2006Pages: 3383, PDF Size: 51.76 MB
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FSU-10
COIL SPRING AND SHOCK ABSORBER
Revision: November 20092006 QX56
COIL SPRING AND SHOCK ABSORBERPFP:56210
Removal and InstallationEES0025A
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove the shock absorber lower bolt using power tool.
3. Remove the three shock absorber upper nuts using power tool.
4. Remove the coil spring and shock absorber assembly.
Turn steering knuckle out to gain enough clearance for
removal.
INSTALLATION
Installation is in the reverse order of removal.
The lower seat step (2) in the shock absorber assembly (1)
faces outside of vehicle.
–Upper spring insulator (3)
–⇐: Front
Tighten all nuts and bolts to specification. Refer to FSU-5, "Com-
ponents" .
When installing wheel and tire, refer to WT-7, "Rotation" .
Disassembly and AssemblyEES0025B
DISASSEMBLY
1. Set the shock absorber in a vise, then loosen (without removing)
the piston rod lock nut as shown.
CAUTION:
Do not remove piston rod lock nut at this time.
2. Compress the spring using tool until the shock absorber mount- ing insulator can be turned by hand.
WARNING:
Make sure that the pawls of the two tools are firmly hooked
on the spring. The spring compressors must be tightened
alternately and evenly so as not to tilt the spring.
3. Remove the piston rod lock nut.
Discard the piston rod lock nut, use a new nut for assembly.
LEIA0093E
WEIA0155E
SSU002
SSU003
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COIL SPRING AND SHOCK ABSORBERFSU-11
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Revision: November 2009 2006 QX56
INSPECTION AFTER DISASSEMBLY
Shock Absorber Assembly
Check for smooth operation through a full stroke, both compression and extension.
Check for oil leakage on welded or gland packing portions.
Check piston rod for cracks, deformation or other damage and replace if necessary.
Mounting Insulator and Rubber Parts
Check cemented rubber-to-metal portion for separation or cracks. Check rubber parts for deterioration and
replace if necessary.
Coil Spring
Check for cracks, deformation or other damage and replace if necessary.
Check the free spring height.
ASSEMBLY
1. When installing coil spring on shock absorber, the lower end (2)
and upper end (3) must be positioned as shown.
Shock absorber mounting insulator (1)
⇐: Flat tail
2. Install upper spring insulator (3) with studs located in line with lower shock mount and in lower seat step (2). The lower seat
step (2) in the shock absorber assembly (1) faces outside of
vehicle.
⇐: Front
3. Tighten the piston rod lock nut to specification. Refer to FSU-5,
"Components" .
Use a new piston rod lock nut for assembly.Front spring free height
2WD : 325.5
± 3 mm (12.8 ± 0.1 in)
4WD : 335.0 ± 3 mm (13.2 ± 0.1 in)
WEIA0154E
WEIA0155E
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FSU-12
STABILIZER BAR
Revision: November 20092006 QX56
STABILIZER BARPFP:54611
Removal and InstallationEES0025C
REMOVAL
1. Remove engine under cover using power tool.
2. Remove stabilizer bar mounting bracket bolts and connecting
rod nuts using power tool, as shown.
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 LINKFSU-13
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Revision: November 2009 2006 QX56
UPPER LINKPFP:54524
Removal and InstallationEES0025D
REMOVAL
1. Remove the wheel and tire using power tool.
2. Remove the fender protector to access upper link. Refer to EI-23, "
Removal and Installation" .
3. Remove cotter pin and nut from upper link ball joint and discard the cotter pin.
4. Separate upper link ball joint stud from steering knuckle using To o l .
Support lower link with jack.
5. Remove upper link bolts and nuts, then remove upper link.
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" .
CAUTION:
Use a new cotter pin for installation of upper link ball joint nut.
When installing wheel and tire, refer to WT-7, "Rotation" .
After installation, check that the front wheel alignment is within specification. Refer to FSU-6, "Front
Wheel Alignment" .
Tool number : ST29020001 (J-24319-01)
LEIA0095E
LEIA0096E
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FSU-14
LOWER LINK
Revision: November 20092006 QX56
LOWER LINKPFP:55020
Removal and InstallationEES0025E
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 nut, if equipped. Refer to FA X - 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 cam bolts (1) and nuts, then the lower link (2).
NOTE:
Some vehicles may be equipped with straight (non-adjustable)
lover link bolts and washers. In order to adjust camber and
caster on these vehicles, first replace the lower link bolts and
washers with adjustable (cam) bolts and washers.
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-7, "Rotation" .
After installation, check that the front wheel alignment is within specification. Refer to FSU-6, "Front
Wheel Alignment" .
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WEIA0153E
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UPPER BALL JOINT AND LOWER BALL JOINTFSU-15
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Revision: November 2009 2006 QX56
UPPER BALL JOINT AND LOWER BALL JOINTPFP:40110
Removal and InstallationEES0025F
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).
InspectionEES0025G
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.
WEIA0076E
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: November 20092006 QX56
VERTICAL END PLAY
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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KNUCKLEFSU-17
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Revision: November 2009 2006 QX56
KNUCKLEPFP:40014
On-Vehicle Inspection and ServiceEES0025H
Make sure the mounting conditions (looseness, backlash) of each component and component status (wear,
damage) are within specifications. Refer to FSU-20, "
Ball Joint" .
Removal and InstallationEES0025I
REMOVAL
1. Remove wheel hub and bearing assembly. Refer to FAX-5, "Removal and Installation" .
Disconnect wheel sensor harness connector. Do not remove wheel sensor from wheel hub and bearing
assembly for this procedure.
2. Remove steering outer socket from steering knuckle using Tool. CAUTION:
Be careful not to damage ball joint boot.
Temporarily tighten nut to prevent damage to threads and
to prevent Tool from coming off.
3. Remove the coil spring and shock absorber assembly using power tool. Refer to FSU-10, "
Removal and
Installation" .
4. Support lower link using a suitable jack.
5. Remove cotter pin and nut from upper link ball joint and discard the cotter pin.
1. Disc rotor 2. Wheel hub and bearing assembly 3. Wheel stud
4. Splash guard 5. Steering knuckle⇐Front
WDIA0328E
Tool number : HT72520000 (J-25730-A)
WGIA0130E
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FSU-18
KNUCKLE
Revision: November 20092006 QX56
6. Separate upper link ball joint from steering knuckle using Tool.
7. Remove pinch bolt from steering knuckle using power tool, then
separate lower link ball joint from steering knuckle.
8. 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" .
INSTALLATION
Installation is in the reverse order of removal.
Refer to FSU-5, "Components" for tightening torques.
CAUTION:
Use a new cotter pin for installation of lock nut.
When installing disc rotor on wheel hub and bearing assembly,
align the marks.
NOTE:
When not using the alignment mark, refer to BR-21, "
FRONT
DISC BRAKE" .
When installing wheel and tire, refer to WT-7, "Rotation" .
Tool number : ST29020001 (J-24319-01)
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WDIA0044E
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SERVICE DATA AND SPECIFICATIONS (SDS)FSU-19
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Revision: November 2009 2006 QX56
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsEES0025J
Spring Free HeightEES0025K
Wheel Alignment (Unladen*1 )*6EES0025L
*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°)
*6: Some vehicles may be equipped with straight (non-adjustable) lover link bolts and washers. In order to adjust camber and ca ster on
these vehicles, first replace the lower link bolts and washers with adjustable (cam) bolts and washers. Suspension type
Independent double wishbone coil over shock
Shock absorber type Double-acting hydraulic
Stabilizer Standard equipment
2WD325.5 ± 3 mm (12.8 ± 0.1 in)
4WD 335.0 ± 3 mm (13.2 ± 0.1 in)
Drive type 2WD 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 °)1 3°13′ (13.22 °)
Total toe-in Distance (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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