Nissan X-Trail 32. Manual - part 712

DRIVE PINION

DLN-259

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R145]

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10. Using a brass rod or equivalent (A), tap drive pinion adjusting

shim evenly from the 2 cutouts on gear carrier and remove drive
pinion adjusting shim and pinion rear bearing outer race.

CAUTION:

Be careful not to damage gear carrier.

11. Perform inspection after disassembly. Refer to 

DLN-262,

"Inspection"

.

ASSEMBLY

1.

Install a drive pinion adjusting shim of the same thickness as
was installed prior to disassembly. Press pinion rear bearing
outer race into gear carrier, using the drift (A) (SST:
ST33200000).

CAUTION:

• At first, using a hammer, tap bearing outer race until it

becomes flush to gear carrier.

• Never reuse pinion rear bearing outer race.

2.

Press pinion front bearing outer race into gear carrier, using the
drift (A) (SST: ST33230000).

CAUTION:

• At first, using a hammer, tap bearing outer race until it

becomes flush to gear carrier.

• Never reuse pinion front bearing outer race.

3.

Press pinion rear bearing inner race to drive pinion, using the
drift (A) (SST: ST23860000).

CAUTION:

Never reuse pinion rear bearing inner race. 

4.

Check and adjust the tooth contact and back lash of drive gear and drive pinion following the procedure
below.

a.

Assemble drive pinion into gear carrier.

CAUTION:

• Never assemble collapsible spacer.
• Apply gear oil to pinion rear bearing.

b.

Assemble pinion front bearing inner race to drive pinion assembly.

CAUTION:

• Never reuse pinion front bearing inner race.
• Apply gear oil to pinion front bearing.

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DLN-260

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R145]

DRIVE PINION

c.

Using the drifts (A and C) and press stand (B), press pinion front
bearing inner race to drive pinion as far as drive pinion lock nut
can be tightened.

d.

Temporarily tighten removed drive pinion lock nut to drive pinion.
NOTE:
Use removed drive pinion lock nut only for the preload measure-
ment.

e.

Rotate drive pinion more than 20 times to adjust bearing.

f.

Fit the drive pinion socket (A) onto the drive pinion. Using the
pinion nut wrench (B), tighten drive pinion lock nut holding drive
pinion, while adjusting pinion bearing preload torque using pre-
load gauge (C).

CAUTION:

Drive pinion lock nut is tightened with no collapsible
spacer. Be careful not to overtighten it. While measuring the
preload, tighten it by 5

°

 to 10

°

.

g.

Install new side bearing adjusting shims (2 pieces for one side)
with the same thickness or re-install the old ones to the same
mounting position they were in prior to disassembly. Install dif-
ferential assembly to gear carrier. Refer to 

DLN-247, "Disassem-

bly and Assembly"

.

CAUTION:

Apply differential gear oil to the side bearings.

h.

Check and adjust tooth contact, drive gear to drive pinion back-
lash. Refer to 

DLN-252, "Adjustment"

.

i.

Remove differential assembly.

j.

Remove drive pinion assembly from gear carrier

k.

Remove drive pinion nut and press drive pinion assembly out of gear carrier.

l.

Remove pinion front bearing inner race.

5.

Assemble collapsible spacer 

 to drive pinion 

.

CAUTION:

• Be careful of the mounting direction of collapsible spacer.
• Never reuse collapsible spacer.

6.

Assemble drive pinion into gear carrier.

CAUTION:

Apply gear oil to pinion rear bearing.

7.

Assemble pinion front bearing inner race to drive pinion assem-
bly.

CAUTION:

• Never reuse pinion front bearing inner race.
• Apply gear oil to pinion front bearing.

A

: Drift (SST: KV40100610)

B

: Press stand (SST: ST38220000)

C

: Drift (SST: ST23860000)

A

: Drive pinion socket (SST: KV38109500 )

B

: Pinion nut wrench (SST: KV38109400)

C

: Preload gauge (SST: ST3127S000)

Pinion bearing preload

: Refer to 

DLN-263, "Preload 

Torque"

.

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DRIVE PINION

DLN-261

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R145]

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8.

Using the drifts (A and C) and press stand (B), press pinion front
bearing inner race to drive pinion as far as drive pinion lock nut
can be tightened.

9.

Apply anti-corrosion oil to the thread and seat of drive pinion
lock nut, and temporarily tighten drive pinion lock nut to drive
pinion.

CAUTION:

Never reuse drive pinion lock nut.

10. Fit the drive pinion socket (A) onto the drive pinion. While hold-

ing drive pinion, tighten drive pinion lock nut within the limits of
specified torque so as to keep the pinion bearing preload within
a standard values, using the pinion nut wrench (B) and the pre-
load gauge (C).

CAUTION:

• Adjust the lower limit of the drive pinion lock nut tighten-

ing torque first.

• If the preload torque exceeds the specified value, replace

collapsible spacer and tighten it again to adjust. Never
loose n drive pinion lock nut to adjust the preload torque.

• After adjustment, rotate drive pinion back and forth 2 to 3

times to check for unusual noise, rotation malfunction,
and other malfunctions.

11. Install differential assembly. Refer to 

DLN-247, "Disassembly and Assembly"

.

CAUTION:

Never install rear cover at this timing.

12. Check and adjust drive gear runout, tooth contact, and drive gear to drive pinion backlash. Refer to 

DLN-

252, "Adjustment"

.

13. Remove dummy cover set, then install rear cover, and side oil seal. Refer to 

DLN-247, "Disassembly and

Assembly"

.

14. Check total preload torque. Refer to 

DLN-252, "Adjustment"

.

15. Using the drift (A) (SST: ST35271000), install drive pinion oil

seal 

 within the dimension (D) shown as follows.

CAUTION:

• Never reuse oil seal.
• When installing, never incline oil seal.
• Apply multi-purpose grease onto oil seal lips, and gear oil

onto the circumference of oil seal.

16. Install electric controlled coupling assembly. Refer to 

DLN-243,

"Disassembly and Assembly"

.

A

: Drift (SST: KV40100610)

B

: Press stand (SST: ST38220000)

C

: Drift (SST: ST23860000)

A

: Drive pinion socket (SST: KV38109500)

B

: Pinion nut wrench (SST: KV38109400)

C

: Preload gauge (SST: ST3127S000)

Drive pinion lock nut 
tightening torque

: Refer to 

DLN-257, "Explod-

ed View"

.

Pinion bearing preload

: Refer to 

DLN-263, "Preload 

Torque"

.

D

: 0.8 – 1.2 mm (0.031 – 0.047 in)

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DLN-262

< UNIT DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R145]

DRIVE PINION

Inspection

INFOID:0000000011008633

INSPECTION AFTER DISASSEMBLY

Drive Gear and Drive Pinion

• Clean up the disassembled parts.
• If the gear teeth never mesh or line-up correctly, determine the cause and adjust or replace as necessary.
• If the gears are worn, cracked, damaged, pitted or chipped (by friction) noticeably, replace with new drive

gear and drive pinion as a set.

Bearing

• Clean up the disassembled parts.
• If any chipped (by friction), pitted, worn, rusted or scratched marks, or unusual noise from the bearing is

observed, replace as a bearing assembly (as a new set).

Oil Seal

• Whenever disassembled, replace.
• If wear, deterioration of adherence (sealing force lips), or damage is detected on the lips, replace them.