INFINITI QX4 2005 Factory Service Manual

RFD-4
PREPARATION
Revision: October 20052005 QX56
Commercial Service ToolsEDS003Q7
Drift
ST33081000Installing side bearing
a: 43 mm (1.69 in) dia.
b: 33.5 mm (1.31 in) dia.
Bearing puller
ST30021000Removing drive pinion rear bearing inner
race
Drift
ST30022000Installing drive pinion rear bearing inner race
a: 110 mm (4.33 in) dia.
b: 46 mm (1.81 in) dia. Tool name
Tool numberDescription
ZZA0810D
ZZA0700D
ZZA0920D
Tool nameDescription
Power toolRemoving bolts and nuts
PBIC0190E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
RFD-5
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Revision: October 20052005 QX56
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartEDS003Q8
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable Reference page
RFD-18RFD-14RFD-14RFD-13—
MA-11, "
Fluids and Lubricants
"
PR-3, "
NVH Troubleshooting Chart
"
FAX -4
(FAX), RAX-4
(RAX)
FSU-4
(FSU), RSU-5
(RSU)
WT-4, "
NVH Troubleshooting Chart
"
WT-4, "
NVH Troubleshooting Chart
"
FAX -4, "
NVH Troubleshooting Chart
"
RAX-4, "
NVH Troubleshooting Chart
"
BR-5, "
NVH Troubleshooting Chart
"
PS-5, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Rough gear tooth
Improper gear contact
Tooth surfaces worn
Incorrect backlash
Companion flange excessive runout
Improper gear oil
PROPELLER SHAFT
AXLE
SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom FINAL DRIVE Noise××××××××××××××

RFD-6
FRONT OIL SEAL
Revision: October 20052005 QX56
FRONT OIL SEALPFP:38189
Removal and InstallationEDS003Q9
REMOVAL
1. Remove the drive shaft inside flange bolts to disconnect the rear drive shafts from the rear final drive.
Support the rear drive shafts using suitable wire.
NOTE:
Disconnecting the rear drive shafts is necessary to measure the total preload accurately.
2. Remove the rear propeller shaft. Refer to PR-9, "
REMOVAL" .
CAUTION:
Do not damage the propeller shaft tube.
3. Check the total preload. Refer to RFD-13, "
TOTAL PRELOAD" .
4. Put a mark on the end of the drive pinion corresponding to the
position mark “B” on the companion flange as shown.
CAUTION:

Use paint to make the matching mark “B” on the drive
pinion. Never damage the drive pinion.

The mark “B” on the companion flange indicates the
maximum vertical runout position.
5. Remove drive pinion nut using Tool as shown.

Discard the drive pinion nut and use a new drive pinion nut for
installation.
6. Remove the companion flange using suitable tool as shown.
SDIA0270E
Tool number : KV40104000
LDIA0105E
LDIA0106E

FRONT OIL SEAL
RFD-7
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Revision: October 20052005 QX56
7. Remove the front oil seal using Tool as shown.
INSTALLATION
1. Apply multi-purpose grease to the sealing lips of the new oil
seal, then press the front oil seal into the carrier using Tool as
shown.
CAUTION:

Keep the new oil seal even when installing, do not tilt the
oil seal when pressing it in.

Discard the old oil seal, always install a new oil seal.
2. Align the matching mark of the drive pinion with the matching
mark “B” of the companion flange as shown, then install the
companion flange.
3. Apply oil or multi-purpose grease on the drive pinion threads
and the seating surface of drive pinion nut.
4. Install new drive pinion nut using Tool.

Tighten the drive pinion nut to the minimum specified torque.
Final drive pinion nut torque will be determined when adjust-
ing the total preload. Refer to RFD-13, "
TOTAL PRELOAD" .
CAUTION:
The drive pinion nut is not reusable. Use a new drive pinion
nut for installation.
5. Install the rear propeller shaft. Refer to PR-9, "
INSTALLATION" .
6. Connect the rear drive shafts to the rear final drive. Tighten the drive shaft inside flange bolts to specifica-
tion.
7. Check the rear final drive fluid and add fluid as necessary. Refer to MA-25, "
Checking Final Drive Oil" . Tool number : ST33290001
LDIA0107E
Tool number : ST15310000
LDIA0108E
SDIA0270E
Tool number : KV40104000
Drive pinion nut : 167 - 372 N·m (17 - 38 kg-m,
124 - 274 ft-lb)
LDIA0105E
Drive shaft inside flange bolt : 118 N·m (12 kg-m, 87 ft-lb)

RFD-8
SIDE OIL SEAL
Revision: October 20052005 QX56
SIDE OIL SEALPFP:33142
Removal and InstallationEDS003QA
REMOVAL
1. Remove the drive shaft inside flange bolts to disconnect the rear drive shafts from the rear final drive.
Support the rear drive shaft using a suitable wire.
2. Remove the side flange using Tools as shown.
a. Install Tool “A” on the side flange.
b. Pull the side flange out using Tool “B” as shown.
3. Remove the side oil seal using a suitable tool as shown.
INSTALLATION
1. Apply multi-purpose grease to the sealing lips of the new side oil seal.
2. Install the new side oil seal until the front surface of the side oil
seal is level with the end surface of the housing using tool.
CAUTION:

Keep the side oil seal even when installing, do not tilt the
side oil seal when pressing it in.

Discard the old side oil seal, always install a new side oil
seal.
3. Install the side flange using Tool.
a. Attach Tool to the side oil seal as shown.
b. After the side flange is inserted and the serrated part of the side
gear has engaged the serrated part of the flange, remove Tool.
c. Position a suitable drift on the center of the side flange, then
drive it in until the sound changes.
NOTE:
When the installation is complete, the driving sound of the side
flange turns into a sound which seems to affect the whole final
drive.Tool number A: KV40104100
Tool number B: ST36230000
Circlip installed position : Final drive side
LDIA0110E
LDIA0109E
Tool number : ST35271000
LDIA0111E
Tool number : KV38107900
SDIA0822E

SIDE OIL SEAL
RFD-9
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RFD
Revision: October 20052005 QX56
4. Check measurement “A” after the side flange installation is com-
plete as shown.
5. Connect the rear drive shafts to the rear final drive. Tighten the drive shaft inside flange bolts to specifica-
tion.Measurement “A” : approx. 339.5 mm (13.37 in)
SDIA1039E
Drive shaft inside flange bolts : 118 N·m (12 kg-m, 87 lb-ft)

RFD-10
REAR FINAL DRIVE ASSEMBLY
Revision: October 20052005 QX56
REAR FINAL DRIVE ASSEMBLYPFP:38300
Removal and InstallationEDS003QB
NOTE:

Insert the plastic end of the breather hose into the hole in the suspension member.

Insert the metallic end of the breather hose into the rear final drive cover with the blue paint mark facing
forward.
REMOVAL
1. Remove the rear propeller shaft from the rear final drive. Refer to PR-9, "REMOVAL" .
CAUTION:
Do not impact or damage the rear propeller shaft.
2. Remove the rear stabilizer bar using power tool. Refer to RSU-41, "
REMOVAL" .
3. Remove the spare tire.
4. Disconnect the rear drive shaft from the rear final drive and position it out of the way using a suitable wire.
Refer to RAX-7, "
REMOVAL" .
5. Disconnect the breather hose from the rear final drive cover.
6. Position a suitable jack under the rear final drive case.
CAUTION:
Do not position the jack under the rear final drive cover (aluminum cover).
7. Remove the rear final drive bolts and nuts, and remove the rear final drive using the suitable jack.
1. Breather hose 2. Rear final drive assembly 3. Rear propeller shaft
4. Washer 5. Lower stopper 6. Rear drive shaft
7. Rear final drive assembly 8. Upper stopper
WDIA0190E

REAR FINAL DRIVE ASSEMBLY
RFD-11
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RFD
Revision: October 20052005 QX56
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
After installation, check the final drive oil level. Refer to MA-25, "
Checking Final Drive Oil" .

RFD-12
REAR FINAL DRIVE ASSEMBLY
Revision: October 20052005 QX56
ComponentsEDS003QC
R230 2–PINION
WDIA0191E

REAR FINAL DRIVE ASSEMBLY
RFD-13
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RFD
Revision: October 20052005 QX56CAUTION:
Final drive pinion nut torque will be determined when adjusting the total preload. Refer to RFD-13,
"TOTAL PRELOAD" .
Pre-InspectionEDS003QD
Before disassembling the rear final drive, perform the following inspections.
TOTAL PRELOAD
1. Turn the drive pinion in both directions several times to set the
bearing rollers.
2. Check the total preload using Tool.
DRIVE GEAR TO DRIVE PINION BACKLASH
Check the drive gear to drive pinion backlash using a dial gauge at
several points as shown.
DRIVE GEAR RUNOUT
Check the runout of the drive gear using a dial gauge as shown.
1. Drive pinion nut 2. Companion flange 3. Front oil seal
4. Pinion front bearing 5. Pinion bearing adjusting spacer (col-
lapsible spacer)6. Pinion rear bearing
7. Pinion height adjusting washer 8. Drive pinion 9. Gear carrier
10. Drive gear 11. Pinion mate shaft 12. Lock pin
13. Pinion mate gear 14. Pinion mate thrust washer 15. Side gear
16. Side gear thrust washer 17. Differential case 18. Side bearing
19. Side bearing adjusting washer 20. Bearing cap 21. Rear cover
22. Filler plug 23. Drain plug 24. Side oil seal
Tool number : ST3127S000
Total preload : 2.05 - 4.11 N·m (0.21 - 0.42 kg-m,
19 - 36 in-lb)
SPD8 84
Drive gear to drive pinion backlash : 0.13 - 0.18 mm
(0.0051 - 0.0070 in)
SPD5 13
Runout limit : 0.05 mm (0.0020 in) or less
SPD8 86