Infiniti FX35, FX50 (S51). Manual — part 583
DIFFERENTIAL ASSEMBLY
DLN-167
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: F160A]
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• VK50VE
Adjustment
INFOID:0000000005249204
TOTAL PRELOAD TORQUE
• Before inspection and adjustment, drain gear oil.
1.
Rotate drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
2.
Rotate drive pinion at least 20 times to check for smooth opera-
tion of the bearing.
3.
Measure total preload with preload gauge (A) [SST:
ST3127S000 (J-25765-A)].
NOTE:
Total preload torque = Pinion bearing preload torque + Side
bearing preload torque
• If measured value is out of the specification, disassemble it to check and adjust each part. Adjust the
pinion bearing preload and side bearing preload.
Adjust the pinion bearing preload first, then adjust the side bearing preload.
SIDE BEARING PRELOAD
• Before inspection and adjustment, drain gear oil.
1.
Remove carrier cover and side retainer. Refer to
2.
Make sure all parts are clean. Also, make sure the bearings are well lubricated with gear oil.
: Vehicle front
A
: 0 – 15
°
JPDID0226ZZ
Standard
Total preload torque
: Refer to
PDIA0792J
When the preload torque is large
On pinion bearings:
Decrease the drive pinion bearing adjusting washer and drive pinion
adjusting washer thickness.
On side bearings:
Increase the side bearing adjusting shim thickness. For select parts
refer to parts information.
When the preload torque is small
On pinion bearings:
Increase the drive pinion bearing adjusting washer and drive pinion
adjusting washer thickness.
On side bearings:
Decrease the side bearing adjusting shim thickness. For select parts
refer to parts information.
DLN-168
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: F160A]
DIFFERENTIAL ASSEMBLY
3.
Place the differential case assembly into gear carrier.
4.
Install side bearing adjusting shim before disassembling or shim
which thickness is the same as the one before disassembling.
5.
Install side retainer assembly to gear carrier.
CAUTION:
Never install O-ring.
6.
Install side retainer mounting bolts to the specified torque.
7.
Measure the turning torque of the gear carrier at the drive gear
mounting bolts with a spring gauge [SST:
—
(J-8129)].
8.
If the turning torque is outside the specification, use a thicker/
thinner side bearing adjusting shim to adjust.
9.
Record the total amount of shim thickness required for the cor-
rect carrier side bearing preload.
PDIA0671E
PDIA0678E
PDIA0669E
Specification
: 34.2 – 39.2 N (3.5 – 4.0 kg,
7.7 – 8.8 lb) of pulling force
at the drive gear bolt
SPD194A
If the turning torque is less than the specified range:
Decrease the side bearing adjusting shim thickness.
If the turning torque is greater than the specification:
Increase the side bearing adjusting shim thickness.
SPD772
DIFFERENTIAL ASSEMBLY
DLN-169
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: F160A]
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DRIVE GEAR RUNOUT
1.
Remove carrier cover. Refer to
2.
Fit a dial indicator to the drive gear back face.
3.
Rotate the drive gear to measure runout.
• If the runout is outside of the repair limit, check drive gear
assembly condition; foreign material may be caught between
drive gear and differential case, or differential case or drive
gear may be deformed, etc.
CAUTION:
Replace drive gear and drive pinion gear as a set.
TOOTH CONTACT
Before inspection and adjustment, drain gear oil.
1.
Remove carrier cover. Refer to
2.
Apply red lead to drive gear.
CAUTION:
Apply red lead to both the faces of 3 to 4 gears at 4 loca-
tions evenly spaced on drive gear.
3.
Rotate drive gear back and forth several times, check drive pin-
ion gear to drive gear tooth contact.
CAUTION:
Check tooth contact on drive side and reverse side.
Limit
Drive gear runout
: Refer to
SPD886
SPD357
SDIA0570E
DLN-170
< UNIT DISASSEMBLY AND ASSEMBLY >
[FRONT FINAL DRIVE: F160A]
DIFFERENTIAL ASSEMBLY
4.
If tooth contact is improperly adjusted, follow the procedure
below to adjust the pinion height [dimension (X)].
PDIA0667E
SDIA0517E
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