2008 INFINITI QX56 Factory Service Manual

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Page 1249 of 4083

INFINITI QX56 2008 Factory Service Manual FRONT FINAL DRIVEDLN-219
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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7. For proper reinstallation, paint matching marks on one side of the side bearing cap

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INFINITI QX56 2008 Factory Service Manual DLN-220
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
• Keep side bearing outer races together with side bearing
inner races. Do not mix them up.
12. For proper reinstallat

Page 1251 of 4083

INFINITI QX56 2008 Factory Service Manual FRONT FINAL DRIVEDLN-221
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Drive Pinion Assembly
1. Remove the differential assembly. Refer to "Differential Assem

Page 1252 of 4083

INFINITI QX56 2008 Factory Service Manual DLN-222
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
7. Place a small hole in the front oil seal case using suitable tool.
8. Remove the front oil seal using Tool as shown.

Page 1253 of 4083

INFINITI QX56 2008 Factory Service Manual FRONT FINAL DRIVEDLN-223
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• Drive pinion and drive gear are supplied in matched sets only. Matching numbers on

Page 1254 of 4083

INFINITI QX56 2008 Factory Service Manual DLN-224
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
2. Using feeler gauges, measure the clearance between the side
gear back and differential case at three different points

DLN-224
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
2. Using feeler gauges, measure the clearance between the side
gear back and differential case at three different points, while
rotating the side gear. Average the three readings to calculate
the clearance. (Measure the clearance of the other side as well.)
• If the side gear back clearance is outside of the specification,use a thicker or thinner side gear thrust washer to adjust.
Refer to DLN-231, "
Inspection and Adjustment".
CAUTION:
• Insert feeler gauges with the same thickness on both sides to prevent side gear from tilting.
• Each gear should rotate smoothly without excessive resistance during differential motion.
• Select a side gear thrust wash er for right and left individu-
ally.
NOTE:
Side gear back clearance is clearance between side gear and differential case for adjusting side gear
backlash.
Drive Pinion Height
• Drive gear and drive pinion are supplied in matched sets only. Matching numbers on both drive pinion and drive gear are etched
for verification. If a new gear set is being used, verify the numbers
of each drive pinion and drive gear before proceeding with assem-
bly.
• The mounting distance from the centerline of the drive gear to the back face of the drive pinion for the M205
final drive assembly is 103.5 mm (4.0748 inches).
On the button end of each drive pinion, there is etched a plus (+) number, a minus (-) number, or a zero (0),
which indicates the best running position for each partic ular gear set. This dimension is controlled by a
selective drive pinion height adjusting washer between the drive pinion rear bearing inner race and drive pin-
ion.
For example: If a drive pinion is etched m+8 (+3), it would require 0.08 mm (0.003 inch) less drive pinion
height adjusting washer than a drive pinion etched “0”. This means decreasing drive pinion height adjusting
washer thickness; increases the mounting distance of the drive pinion to 103.6 mm (4.0778 inches). If a
drive pinion is etched m-8 (-3), it would require addi ng 0.08mm (0.003 inch) more to the drive pinion height
adjusting washer than would be required if the drive pinion were etched “0”. By adding 0.08 mm (0.003 inch),
the mounting distance of the drive pinion was decreased to 103.4 mm (4.0718 inches) which is just what a
m-8 (-3) etching indicated.
• To change the drive pinion height, use different drive pi nion height adjusting washers which come in different
thickness.
• Use the following tables as a guide for selecting the correct drive pinion height adjusting washer thickness to add or subtract from the old drive pinion height adjusting washer. Side gear back clearance: 0.20 mm (0.0079 in) or less
If the side gear back clearance is greater than
specification:
Use a thicker side gear thrust washer.
If the side gear back clearance is less than spec-
ification: Use a thinner side gear thrust washer.
PDIA0576E
SDIA2241E
Revision: March 2010 2008 QX56

Page 1255 of 4083

INFINITI QX56 2008 Factory Service Manual FRONT FINAL DRIVEDLN-225
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ASSEMBLY
Drive Pinion Assembly
1. Install drive pinion rear bearing outer race using To

Page 1256 of 4083

INFINITI QX56 2008 Factory Service Manual DLN-226
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
4. Install the selected drive pinion height adjusting washer to the
drive pinion. Press the drive pinion rear bearing in

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