Infiniti QX56 (JA60). Manual — part 553
FSU-18
< REMOVAL AND INSTALLATION >
UPPER BALL JOINT AND LOWER BALL JOINT
UPPER BALL JOINT AND LOWER BALL JOINT
Removal and Installation
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The ball joints are part of the upper and lower links. Refer to
FSU-16, "Removal and Installation"
FSU-17, "Removal and Installation"
(lower link).
KNUCKLE
FSU-19
< REMOVAL AND INSTALLATION >
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KNUCKLE
Removal and Installation
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REMOVAL
1. Remove wheel hub and bearing assembly. Refer to
FAX-7, "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
.
4. Support lower link using a suitable jack.
5. Remove cotter pin and nut from upper link ball joint and discard the cotter pin.
6. Separate upper link ball joint from steering knuckle using Tool.
1.
Disc rotor
2.
Wheel hub and bearing assembly
3.
Wheel stud
4.
Splash guard
5.
Steering knuckle
Front
AWDIA0423GB
Tool number
: HT72520000 (J-25730-A)
WGIA0130E
Tool number
: ST29020001 (J-24319-01)
LEIA0095E
FSU-20
< REMOVAL AND INSTALLATION >
KNUCKLE
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
.
INSTALLATION
Installation is in the reverse order of removal.
• Refer to
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
• When installing wheel and tire, refer to
LEIA0097E
WDIA0044E
COIL SPRING AND SHOCK ABSORBER
FSU-21
< DISASSEMBLY AND ASSEMBLY >
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DISASSEMBLY AND ASSEMBLY
COIL SPRING AND SHOCK ABSORBER
Disassembly and Assembly
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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.
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
SSU002
SSU003
Front spring free height
2WD
: 325.5
± 3 mm (12.8 ± 0.1 in)
4WD
: 335.0
± 3 mm (13.2 ± 0.1 in)
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