2007 INFINITI QX56 Factory Service Manual

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Page 1921 of 3061

INFINITI QX56 2007 Factory Service Manual FFD-22
< SERVICE INFORMATION >
FRONT FINAL DRIVE ASSEMBLY
7. Place a small hole in the front oil seal case using suitable tool.
8. Remove the front oil seal using Tool as shown.
9. Remove the drive pi

Page 1922 of 3061

INFINITI QX56 2007 Factory Service Manual FRONT FINAL DRIVE ASSEMBLY
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• Drive pinion and drive gear are supplied in matched sets only. Matching numbers on both drive pinion and

Page 1923 of 3061

INFINITI QX56 2007 Factory Service Manual FFD-24
< SERVICE INFORMATION >
FRONT FINAL DRIVE ASSEMBLY
2. Using feeler gauges, measure the clearance between the side
gear back and differential case at three different points, while
rotating the s

FFD-24
< SERVICE INFORMATION >
FRONT FINAL DRIVE ASSEMBLY
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 FFD-31, "
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 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 particular 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 0.08mm (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 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: 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

Page 1924 of 3061

INFINITI QX56 2007 Factory Service Manual FRONT FINAL DRIVE ASSEMBLY
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ASSEMBLY
Drive Pinion Assembly
1. Install drive pinion rear bearing outer race using Tools.
2. Install drive

Page 1925 of 3061

INFINITI QX56 2007 Factory Service Manual FFD-26
< SERVICE INFORMATION >
FRONT FINAL DRIVE ASSEMBLY
4. Install the selected drive pinion height adjusting washer to the
drive pinion. Press the drive pinion rear bearing inner race to it
using T

Page 1926 of 3061

INFINITI QX56 2007 Factory Service Manual FRONT FINAL DRIVE ASSEMBLY
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10. Apply anti-corrosive oil to the threads of the drive pinion and the
seating surface of the new drive pini

Page 1927 of 3061

INFINITI QX56 2007 Factory Service Manual FFD-28
< SERVICE INFORMATION >
FRONT FINAL DRIVE ASSEMBLY
4. Install the pinion mate shaft and align the lock pin hole on the
pinion mate shaft with the lock pin hole on the differential case.
5. Meas

Page 1928 of 3061

INFINITI QX56 2007 Factory Service Manual FRONT FINAL DRIVE ASSEMBLY
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10. Install side bearing adjusters into gear carrier.
11. Apply differential gear oil to the side bearings, a

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