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Nissan Pathfinder (2012 year). Instruction - part 233

REAR FINAL DRIVE

DLN-429

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

DLN

UNIT DISASSEMBLY AND ASSEMBLY

REAR FINAL DRIVE

Exploded View

INFOID:0000000007357650

Drive pinion lock nut

Companion flange

Front oil seal

Drive pinion front bearing

Gear carrier

Side oil seal

Side flange

Collapsible spacer

Drive pinion rear bearing

10. Drive pinion height adjusting

washer

11. Drive pinion

12. Side bearing adjusting washer

13. Side bearing

14. Side gear thrust washer

15. Circular clip

16. Side gear

17. Lock pin

18. Pinion mate gear

19. Pinion mate thrust washer

20. Pinion mate shaft

21. Drive gear

22. Differential case

23. Side bearing cap

24. Filler plug

25. Gasket

26. Carrier cover

27. Drain plug

WDIA0295E

August 2012

2012 Pathfinder

DLN-430

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

REAR FINAL DRIVE

Disassembly and Assembly

INFOID:0000000007357651

ASSEMBLY INSPECTION AND ADJUSTMENT

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

DLN-420, "Changing Differential

Gear Oil"

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

DLN-425,

"Removal and Installation"

Total Preload Torque

1. Remove the side flanges if necessary. Refer to

DLN-423, "Removal and Installation"

CAUTION:

The side flanges shaft must be removed 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.

CAUTION:

Select a side bearing adjusting washer for right and left individually.

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.

Tool number

: ST3127S000 (J-25765-A)

Total preload torque:

Refer to

DLN-447, "Inspection

and Adjustment"

SPD884

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 on each side. Refer to

DLN-447, "Inspection and Adjust-

ment"

If the total preload torque is less than specification

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

Use thicker side bearing adjusting washers by the same
amount on each side. Refer to

DLN-447, "Inspection and Ad-

justment"

Runout limit

Refer to

DLN-447, "Inspection

and Adjustment"

SPD886

August 2012

2012 Pathfinder

REAR FINAL DRIVE

DLN-431

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

DLN

Tooth Contact

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 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 washers

to move the drive pinion closer to the drive gear.

Refer to

DLN-447, "Inspection and Adjustment"

SPD357

SDIA0570E

SDIA0517E

PDIA0440E

August 2012

2012 Pathfinder

DLN-432

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

REAR FINAL DRIVE

• 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-447, "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 the side bearing adjusting washers.

CAUTION:

Do not change the total thickness of side bearing adjusting washers as it will change the side bearing

preload torque.

Companion Flange Runout

1. Rotate companion flange and check for runout on the outer face

of the companion flange using suitable tool.

2. If the runout is outside of 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 pinion, possible cause could be an assembly malfunction of drive pin-

ion and drive pinion bearing or a malfunctioning 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

Side Flange

1. Drain the differential gear oil if necessary.

PDIA0441E

Backlash:

Refer to

DLN-447, "Inspection and

Adjustment"

If the backlash is greater than specification:

Make side bearing adjusting washer thicker on drive
gear back side, and side bearing adjusting washer
thinner on drive gear tooth side by the same amount.
Refer to

DLN-447, "Inspection and Adjustment"

If the backlash is less than specification:

Make side bearing adjusting washer thinner on drive
gear back side, and side bearing adjusting washer
thicker on drive gear tooth side by the same amount.
Refer to

DLN-447, "Inspection and Adjustment"

SPD513

Runout limit

Refer to

DLN-447, "Inspection and

Adjustment"

WDIA0231E

August 2012

2012 Pathfinder

REAR FINAL DRIVE

DLN-433

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

DLN

2. Remove the side flange using Tools.

NOTE:

Circular clip installation position: Rear final drive side

3. Remove the side oil seal using suitable tool.

CAUTION:

Do not to damage gear carrier.

Differential Assembly

1. Remove the side flanges. Refer to

DLN-423, "Removal and Installation"

2. Remove the carrier cover bolts.
3. Remove the carrier cover bolts and separate the carrier cover

from the gear carrier using Tool.

CAUTION:

• Do not damage the mating surface.

• Do not insert flat-bladed screwdriver, this will damage the

mating surface.

4. Mount the carrier on the Tool using two 45 mm (1.77 in) spacers.

Tool numbers

(A): KV40104100 ( — )
(B): ST36230000 (J-25840-A)

WDIA0115E

SDIA0495E

Tool number

: KV10111100 (J-37228)

WDIA0123E

Tool number

: KV38100800 (J-25604-01)

SPD888

August 2012

2012 Pathfinder

DLN-434

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

REAR FINAL DRIVE

5. For proper reinstallation, paint matching marks on one side of

the side bearing cap and gear carrier.

CAUTION:

• For matching marks, use paint. Do not damage side bear-

ing cap or gear carrier.

• Side bearing caps are line-board during manufacture. The

matching marks are used to reinstall them in their original

positions.

6. Remove the side bearing caps.

7. Lift the differential case assembly out using Tool.

CAUTION:

• Keep side bearing outer races together with inner race.

Do not mix them up.

• Keep side bearing adjusting washers together with side

bearings.

SDIA1795E

S-PD343

Tool number

: HT72400000 ( — )

S-PD344

SPD919

August 2012

2012 Pathfinder

REAR FINAL DRIVE

DLN-435

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

DLN

8. Remove the side bearing inner races using Tools.

CAUTION:

• Engage Tool jaws in bearing groove to prevent damage.

• Place copper plates between the side bearing and drive

gear and the vise to prevent damage.

• Do not remove side bearing inner race unless it is being

replaced.

9. For proper reinstallation, paint matching marks on the differential

case and drive gear.

CAUTION:

Use paint for matching marks. Do not damage differential

case or drive gear.

10. Remove the drive gear bolts.
11. Tap the drive gear off the differential case using suitable tool.

CAUTION:

Tap evenly all around to keep drive gear from bending.

12. Remove the lock pin of the pinion mate shaft from the drive gear

side using suitable tool.

13. Remove the pinion mate shaft.

Tool number

(A): ST33051001 (J-22888-20)
(B): ST33061000 (J-8107-2)

SPD920

PDIA0496E

WDIA0132E

SDIA0031J

August 2012

2012 Pathfinder

DLN-436

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R200]

REAR FINAL DRIVE

14. Turn the pinion mate gear, then remove the pinion mate gear,

pinion mate thrust washer, side gear and side gear thrust

washer from the differential case.

Drive Pinion Assembly

1. Remove the differential assembly. Refer to

DLN-426, "Removal and Installation"

2. Remove the drive pinion lock nut using suitable tool.
3. Put matching marks on the companion flange and drive pinion

using paint.

CAUTION:

Use paint to make the matching marks. Do not damage the

companion flange or drive pinion.

4. Remove the companion flange using suitable tool.

5. Press the drive pinion assembly (with rear inner bearing race

and collapsible spacer) out of the gear carrier.

CAUTION:

Do not drop drive pinion assembly.

6. Remove the front oil seal.

CAUTION:

Do not damage gear carrier.

7. Remove the drive pinion front bearing inner race.

SDIA0032J

SDIA1144E

SDIA1132E

SPD892

August 2012

2012 Pathfinder

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