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Nissan Titan A60. Manual - part 308

FRONT FINAL DRIVE

DLN-171

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

DLN

UNIT DISASSEMBLY AND ASSEMBLY

FRONT FINAL DRIVE

Disassembly and Assembly

INFOID:0000000006179549

COMPONENTS

Side bearing adjuster

Side bearing

Side gear thrust washer

Side gear

Lock pin

Pinion mate thrust washer

Pinion mate gear

Pinion mate shaft

Drive pinion

10. Drive pinion height adjusting washer 11. Drive pinion rear bearing

12. Collapsible spacer

13. Breather tube

14. Differential side flange

15. Dust shield

16. Circular clip

17. Side oil seal

18. Drive pinion front bearing

19. Front oil seal

20. Companion flange

21. Drive pinion lock nut

22. Drain plug

23. Differential side shaft

24. Differential side shaft bearing

25. Extension tube

26. O-ring

27. Gear carrier

AWDIA0020GB

DLN-172

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

FRONT FINAL DRIVE

ASSEMBLY INSPECTION AND ADJUSTMENT

• Drain the differential gear oil before inspection and adjustment. Refer to

DLN-164, "Changing Differential

Gear Oil"

• Remove and install the carrier cover as necessary for inspection and adjustment. Refer to

DLN-168,

"Removal and Installation"

Total Preload Torque

1. Install the differential side shaft and differential side flange if necessary.

CAUTION:

The differential side shaft and differential side flange must be installed in order to measure total

preload torque.

2. Rotate the drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
3. Rotate the drive pinion at least 20 times to check for smooth operation of the bearings.
4. 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. 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

28. Plate

29. Differential case

30. Drive gear

31. Side bearing cap

32. Filler plug

33. Carrier cover

34. Bushing

35. Bearing

Screw

Dowel pin

Tool number

: ST3127S000 (J-25765-A)

Total preload torque

: Refer to

DLN-187, "Inspection and Adjust-

ment"

PDIA0697E

If the total preload torque is greater than specification

On drive pinion bearings: Replace the collapsible spacer.
On side bearings:

Loosen the side bearing adjuster by the same amount on each
side.

If the total preload torque is less than specification

On drive pinion bearings: Tighten the drive pinion lock nut.
On side bearings:

Tighten the side bearing adjuster by the same amount on each
side.

Runout limit:

0.08 mm (0.0031 in) or less

SPD886

FRONT FINAL DRIVE

DLN-173

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

DLN

1. Apply red lead to the 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 drive pinion height (dimension X).

• If the tooth contact is near the face (face contact), or near the heel

(heel contact), use a thicker drive pinion height adjusting washer to

move drive pinion closer to the drive gear.

Refer to

DLN-187, "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 washer to

move the drive pinion farther from the drive gear.

Refer to

DLN-187, "Inspection and Adjustment"

SPD357

SDIA0570E

SDIA0517E

PDIA0440E

PDIA0441E

DLN-174

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

FRONT FINAL DRIVE

Backlash

1. Fit a dial indicator to the drive gear face to measure the back-

lash.

• If the backlash is outside of the specification, adjust each side

bearing adjuster.

CAUTION:

Do not change the side bearing adjusters by different

amounts as it will change the side bearing preload torque.

Companion Flange Runout

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.

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. Drain the differential gear oil if necessary.

Backlash:

Refer to

DLN-187, "Inspection and

Adjustment"

SPD513

If the backlash is greater than specification:

Loosen side bearing adjuster A and tighten side bear-
ing adjuster B by the same amount.

If the backlash is less than specification:

Loosen side bearing adjuster B and tighten side bear-
ing adjuster A by the same amount.

SDIA2262E

Runout limit
Companion
flange face:

Refer to

DLN-187, "Inspection and

Adjustment"

Companion
flange inner side:

Refer to

DLN-187, "Inspection and

Adjustment"

SDIA2078E

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