Nissan Titan. Manual - part 149

DLN-168

< UNIT REMOVAL AND INSTALLATION >

[FRONT FINAL DRIVE: M205]

FRONT FINAL DRIVE

7. Remove the front final drive assembly bolts (

), then remove

the front final drive assembly.

CAUTION:

Support the front final drive assembly while removing using

a suitable jack.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

• Make sure there are no pinched or restricted areas on the breather hose caused by folding or bend-

ing when installing it.

• Check the front final drive assembly fluid level and add the specified fluid as necessary. Refer to

DLN-162, "Checking Differential Gear Oil"

.

BDIA0008E

FRONT FINAL DRIVE

DLN-169

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

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UNIT DISASSEMBLY AND ASSEMBLY

FRONT FINAL DRIVE

Disassembly and Assembly

INFOID:0000000009886080

COMPONENTS

1.

Side bearing adjuster

2.

Side bearing

3.

Side gear thrust washer

4.

Side gear

5.

Lock pin

6.

Pinion mate thrust washer

7.

Pinion mate gear

8.

Pinion mate shaft

9.

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-170

< 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-162, "Changing Differential

Gear Oil"

.

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

DLN-166,

"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

36

Screw

37

Dowel pin

Tool number

: ST3127S000 (J-25765-A)

Total preload torque

: Refer to 

DLN-185, "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-171

< UNIT DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

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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-185, "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-185, "Inspection and Adjustment"

.

SPD357

SDIA0570E

SDIA0517E

PDIA0440E

PDIA0441E