2010 INFINITI QX56 Factory Service Manual

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Page 1305 of 4210

INFINITI QX56 2010 Factory Service Manual FRONT FINAL DRIVEDLN-223
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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• Keep side bearing outer races together with si de bearing inner races. Do not mix t

Page 1306 of 4210

INFINITI QX56 2010 Factory Service Manual DLN-224
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
2. Remove the drive pinion lock nut using suitable tool.
3. Put matching marks on the companion flange and drive pinion

Page 1307 of 4210

INFINITI QX56 2010 Factory Service Manual FRONT FINAL DRIVEDLN-225
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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7. Place a small hole in the front oil seal case using suitable tool.
8. Remove the fro

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INFINITI QX56 2010 Factory Service Manual DLN-226
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
• Drive pinion and drive gear are supplied in matched sets only. Matching numbers on both drive pinion and
drive gear

Page 1309 of 4210

INFINITI QX56 2010 Factory Service Manual FRONT FINAL DRIVEDLN-227
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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2. Using feeler gauges, measure the clearance between the side gear back and differenti

FRONT FINAL DRIVEDLN-227
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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-234, "
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 washer for right and left individually.
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 center line 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 adding 0.08 mm (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 pinion 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
: Refer to
DLN-234, "
Inspection
and Adjustment"
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: April 20092010 QX56

Page 1310 of 4210

INFINITI QX56 2010 Factory Service Manual DLN-228
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
ASSEMBLY
Drive Pinion Assembly
1. Install drive pinion rear bearing outer race using Tools.
2. Install drive pinion fron

Page 1311 of 4210

INFINITI QX56 2010 Factory Service Manual FRONT FINAL DRIVEDLN-229
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4. Install the selected drive pinion height adjusting washer to the drive pinion. Press

Page 1312 of 4210

INFINITI QX56 2010 Factory Service Manual DLN-230
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
10. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pinion lock nut

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