Nissan Frontier D40. Manual — part 301
REAR FINAL DRIVE
DLN-225
< DISASSEMBLY AND ASSEMBLY >
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ASSEMBLY INSPECTION AND ADJUSTMENT
• Drain the differential gear oil before inspection and adjustment. Refer to
DLN-219, "Changing Differential
• Remove and install the carrier cover as necessary for inspection and adjustment. Refer to
Total Preload Torque
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 operation of the bearing.
3.
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.
Gear carrier
2.
Drive pinion lock nut
3.
Companion flange
4.
Front oil seal
5.
Drive pinion front bearing
6.
Drain plug
7.
Collapsible spacer
8.
Side bearing cap
9.
Drive pinion rear bearing
10. Drive pinion height adjusting washer 11.
Drive pinion
12. Drive gear
13. Differential case
14. Carrier cover
15. Filler plug
16. Pinion mate shaft
17. Lock pin
18. Side bearing
19. Side bearing adjusting washer
20. Side gear thrust washer
21. Side gear
22. Pinion mate gear
23. Pinion mate thrust washer
24. Gasket
25. Breather
Tool number
: ST3127S000 (J-25765-A)
Total preload torque
: Refer to
DLN-243, "Inspection and Adjust-
If the total preload torque is greater than specification
On drive pinion bearings:
Replace the collapsible spacer.
On side bearings:
Use thinner side bearing adjusting washers by the same
amount to each side. Refer to
DLN-243, "Inspection and Adjust-
If the total preload torque is less than specification
On drive pinion bearings:
Tighten the drive pinion nut.
On side bearings:
Use thicker side bearing adjusting washers by the same
amount to each side. Refer to
DLN-243, "Inspection and Adjust-
PDIA0309E
DLN-226
< DISASSEMBLY AND ASSEMBLY >
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REAR FINAL DRIVE
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
Checking gear tooth contact pattern is necessary to verify correct relationship between drive gear and drive
pinion. Gears which are not positioned in proper arrangement may be noisy and/or have a short life. Check
gear tooth contact pattern to obtain the best contact for low noise and long life.
1.
Apply red lead to drive gear.
NOTE:
Apply red lead to both faces of three to four gears, at four loca-
tions evenly spaced on the drive gear.
2.
Rotate the drive gear back and forth several times. Then check
for correct drive pinion to drive gear tooth contact as shown.
CAUTION:
Check tooth contact on drive side and reverse side.
3.
If the tooth contact is improperly adjusted, follow the procedure
below to adjust the pinion height (dimension X).
Runout limit
: Refer to
SPD886
SPD199
SDIA0570E
SDIA0517E
REAR FINAL DRIVE
DLN-227
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• If the tooth contact is near the face (face contact), or near the heel
(heel contact), use a thicker drive pinion height adjusting washers
to move the drive pinion closer to the drive gear.
Refer to
DLN-243, "Inspection and Adjustment"
• If the tooth contact is near the flank (flank contact), or near the toe
(toe contact), use a thinner drive pinion height adjusting washers to
move the drive pinion farther from the drive gear.
Refer to
DLN-243, "Inspection and Adjustment"
Backlash
1.
Fit a dial indicator to the drive gear face to measure the back-
lash.
• If the backlash is outside of the specification, change the thickness
of each side bearing adjusting washer.
CAUTION:
Do not change the total thickness of side bearing adjusting washers as it will change the side bearing
preload torque.
Companion Flange Runout
PDIA0440E
PDIA0441E
Backlash:
Refer to
If the backlash is greater than specification:
Make drive gear back side adjusting washer thicker,
and drive gear tooth side adjusting washer thinner by
the same amount. Refer to
.
If the backlash is less than specification:
Make drive gear back side adjusting washer thinner,
and drive gear tooth side adjusting washer thicker by
the same amount. Refer to
.
SPD196
DLN-228
< DISASSEMBLY AND ASSEMBLY >
[C200]
REAR FINAL DRIVE
1.
Rotate companion flange and check for runout on the compan-
ion flange face (inner side of the bolt holes) and companion
flange inner side (socket diameter) using suitable tool.
2.
If the runout is outside the runout limit, follow the procedure
below to adjust.
a.
Rotate the companion flange on the drive pinion by 90
°
, 180
°
and 270
°
while checking for the position where the runout is
minimum.
b.
If the runout is still outside of the runout limit after the companion flange has been rotated on the drive pin-
ion, possible cause could be an assembly malfunction of drive pinion and drive pinion bearing or a mal-
functioning drive pinion bearing.
c.
If the runout is still outside of the runout limit after repair of the assembly of drive pinion and drive pinion
bearing or drive pinion bearing, replace the companion flange.
DISASSEMBLY
Differential Assembly
1.
Remove carrier cover bolts.
2.
Remove carrier cover using Tool.
CAUTION:
• Do not damage the mating surface.
• Do not insert flat-bladed screwdriver, this will damage the
mating surface.
3.
For proper reinstallation, paint matching marks on one side of
side bearing cap.
CAUTION:
• Side bearing caps are line-board for initial assembly. The
matching marks are used to reinstall them in their original
positions.
• For matching mark, use paint. Do not damage side bear-
ing cap.
4.
Remove side bearing caps.
Runout limit:
Refer to
SDIA2078E
Tool number
: KV10111100 (J-37228)
SDIA2581E
SPD714
SPD202
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