2009 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2009 Factory Service Manual
FRONT FINAL DRIVEDLN-217
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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DISASSEMBLY AND ASSEMBLY
FRONT FINAL DRIVE
Disassembly and AssemblyINFOID:000000000587

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INFINITI QX56 2009 Factory Service Manual
DLN-218
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
ASSEMBLY INSPECTION AND ADJUSTMENT
Drain the differential gear oil before inspection and adjustment. Refer to
DLN-20

DLN-218
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
ASSEMBLY INSPECTION AND ADJUSTMENT
Drain the differential gear oil before inspection and adjustment. Refer to
DLN-209, "Changing Differential
Gear Oil".
Remove and install the carrier cover as neces sary for inspection and adjustment. Refer to DLN-214,
"Removal and Installation".
Total Preload Torque
1. Install the differential side shaft and differential side flange if necessary.
CAUTION:
The differential side shaft and differential side flan ge must be installed 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 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.
Drive Gear Runout
1. Fit a dial indicator to the drive gear back face.
2. Rotate the drive gear to measure runout.
If the runout is outside of the limit , check the condition of the drive
gear assembly. Foreign material may be caught between the drive
gear and differential case, or the differential case or drive gear may
be deformed.
CAUTION:
Replace drive gear and drive pinion as a set.
Tooth Contact
28. Plate 29. Differential case 30. Drive gear
31. Side bearing cap 32. Filler plug 33. Carrier cover
34. Bushing 35. Bearing 36 Screw
37 Dowel pin
Tool number : ST3127S000 (J-25765-A)
Total preload torque
: Refer to DLN-234, "Inspection and Adjust-
ment"
PDIA0697E
If the total preload torque is greater than specification
On drive pinion bearings: R eplace the collapsible spacer.
On side bearings: Loosen the side bearin g adjuster by the same amount on each
side.
If the total preload torque is less than specification On drive pinion bearings: Tighten the drive pinion lock nut.
On side bearings: Tighten the side bear ing adjuster by the same amount on each
side.
Runout limit: 0.08 mm (0.0031 in) or less
SPD886
Revision: December 20092009 QX56

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INFINITI QX56 2009 Factory Service Manual
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1. Apply red lead to the drive gear. NOTE:
Apply red lead to both faces of thr ee to f

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INFINITI QX56 2009 Factory Service Manual
DLN-220
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
Backlash
1. Fit a dial indicator to the drive gear face to measure the back-
lash.
If the backlash is outside of t he

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INFINITI QX56 2009 Factory Service Manual
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2. Remove the differential side shaft and differential side flange using suitable tool

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INFINITI QX56 2009 Factory Service Manual
DLN-222
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
7. For proper reinstallation, paint matching marks on one side of
the side bearing cap and gear carrier.
CAUTION:
For

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INFINITI QX56 2009 Factory Service Manual
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Keep side bearing outer races together with si de bearing inner races. Do not mix th

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INFINITI QX56 2009 Factory Service Manual
DLN-224
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FRONT FINAL DRIVE
2. Remove the drive pinion lock nut using suitable tool.
3. Put matching marks on the companion flange and drive pinion

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