2008 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2008 Factory Service Manual REAR FINAL DRIVEDLN-251
< DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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DISASSEMBLY AND ASSEMBLY
REAR FINAL DRIVE
Disassembly and AssemblyINFOID:0000000004900755

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INFINITI QX56 2008 Factory Service Manual DLN-252
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
ASSEMBLY INSPECTION AND ADJUSTMENT
• Drain the differential gear oil before inspection and adjustment. Refer to
DLN-242

DLN-252
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
ASSEMBLY INSPECTION AND ADJUSTMENT
• Drain the differential gear oil before inspection and adjustment. Refer to
DLN-242, "Changing Differential
Gear Oil".
• Remove and install the carrier cover as neces sary for inspection and adjustment. Refer to DLN-247,
"Removal and Installation".
Total Preload Torque
1. Remove the side flanges if necessary. Refer to "Side Flange".
CAUTION:
The side flanges shaft must removed in order to measure total preload torque.
2. Rotate the drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
3. Rotate the drive pinion at least 20 times to check for smooth operation of the bearings.
4. Measure the total preload torque using Tool.
NOTE:
Total preload torque = Drive pinion bearing preload torque +
Side bearing preload torque
• If the measured value is out of the specification, check and adjust each part. Adjust the drive pinion
bearing preload torque first, then adjust the side bearing preload torque.
CAUTION:
Select a side bearing adjusting wash er for right and left individually.
Drive Gear Runout
1. Drive pinion lock nut 2. Companion flange3. Front oil seal
4. Drive pinion front bearing 5. Collapsible spacer6. Drive pinion rear bearing
7. Drive pinion height adjusting washer 8. Drive pinion 9. Gear carrier
10. Drive gear 11. Pinion mate shaft12. Lock pin
13. Pinion mate gear 14. Pinion mate thrust washer 15. Side gear
16. Side gear thrust washer 17. Differential case18. Side bearing
19. Side bearing adjusting washer 20. Bearing cap 21. Carrier cover
22. Filler plug 23. Drain plug24. Side oil seal
Tool number : ST3127S000 (J-25765-A)
Total preload torque:
2.05 - 4.11 N·m (0.21 - 0.42 kg-m, 19 - 36 in-lb)
SPD884
If the total preload torque is greater than specificationOn drive pinion bearings: Replace the collapsible spacer.
On side bearings: Use thinner side b earing adjusting washers by the same
amount on each side. Refer to DLN-268, "
Inspection and Adjust-
ment".
If the total preload torque is less than specification On drive pinion bearings: Tighten the drive pinion lock nut.
On side bearings: Use thicker side b earing adjusting washers by the same
amount on each side. Refer to DLN-268, "
Inspection and Ad-
justment".
Revision: March 2010 2008 QX56

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INFINITI QX56 2008 Factory Service Manual REAR FINAL DRIVEDLN-253
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1. Fit a dial indicator to the drive gear back face.
2. Rotate the drive gear to measure

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INFINITI QX56 2008 Factory Service Manual DLN-254
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
• If the tooth contact is near the face (face contact), or near the heel
(heel contact), use a thicker drive pinion heig

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INFINITI QX56 2008 Factory Service Manual REAR FINAL DRIVEDLN-255
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1. Rotate companion flange and check for runout on the outer face of the companion flange

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INFINITI QX56 2008 Factory Service Manual DLN-256
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
4. Mount the carrier on the Tool using two 45 mm (1.77 in) spacers.
5. For proper reinstallation, paint matching marks on

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INFINITI QX56 2008 Factory Service Manual REAR FINAL DRIVEDLN-257
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• Keep side bearing outer races together with inner race. Do not mix them up.
• Keep

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INFINITI QX56 2008 Factory Service Manual DLN-258
< DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
13. Remove the pinion mate shaft.
14. Turn the pinion mate gear, then remove the pinion mate gear,
pinion mate thrust wash

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