Infiniti QX56 (JA60). Manual - part 334

REAR FINAL DRIVE

DLN-259

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R230]

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• Keep side bearing outer races together with inner race.

Do not mix them up.

• Keep side bearing adjusting washers together with side

bearings.

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.

SPD919

Tool number

A: ST3306S001 ( — )
B: ST33061000 (J-8107-2)

SPD920

PDIA0496E

WDIA0132E

DLN-260

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R230]

REAR FINAL DRIVE

13. Remove the pinion mate shaft.

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.
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.

SDIA0031J

SDIA0032J

SDIA1144E

SDIA1132E

REAR FINAL DRIVE

DLN-261

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[REAR FINAL DRIVE: R230]

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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.

8. Remove the drive pinion rear bearing inner race and drive pinion

height adjusting washer using Tool.

9. Remove the drive pinion front and rear bearing outer races by

tapping them uniformly using suitable tool.

CAUTION:

Do not damage gear carrier.

INSPECTION AFTER DISASSEMBLY

Clean the disassembled parts. Then inspect the parts for wear or damage. If wear or damage are found, follow

the measures below.

Drive Pinion and Drive Gear

• If the drive pinion and drive gear teeth do not mesh or line-up correctly, determine the cause and adjust,

repair, or replace as necessary.

• If the drive pinion or drive gear are worn, cracked, damaged, pitted or chipped (by friction) noticeably,

replace with new drive pinion and drive gear.

• Drive pinion and drive gear are supplied in matched sets only. Matching numbers on both drive pinion and

drive gear are etched for verification. If a new drive pinion and drive gear set are being used, verify the num-

bers of each drive pinion and drive gear before proceeding with assembly.

Bearing

• If bearings are chipped (by friction), pitted, worn, rusted, scratched, or unusual noise is coming from bearing,

replace with new bearing assembly (as a new set).

• Bearing must be replaced with a new one whenever disassembled.

Side Gear and Pinion Mate Gear

• If any cracks or damage are found on the surface of the teeth, replace with new one.

• If any worn or chipped marks are found on the side of the side gear and pinion mate gear which contact the

thrust washer, replace with new one.

• Replace both side gear and pinion mate gear as a set when replacing side gear or pinion mate gear.

Side Gear Thrust Washer and Pinion Mate Thrust Washer

• If any chips (by friction), damage, or unusual wear are found, replace with new one.

SPD892

Tool number:

: ST30031000 (J-22912-01)

S-PD179

SDIA0817E

DLN-262

< DISASSEMBLY AND ASSEMBLY >

[REAR FINAL DRIVE: R230]

REAR FINAL DRIVE

Gear Carrier

• If any wear or cracks are found on the contact sides of gear carrier, replace with new one.

Companion Flange

• If any chips (about 0.1mm, 0.004 in) or other damage on the companion flange surface which contacts the

front oil seal lips are found, replace with new one.

ADJUSTING AND SELECTING WASHERS

Side Gear Back Clearance

• Assemble the differential parts if they are disassembled. 
1. Place the differential case straight up so that the side gear to be

measured is upward.

2. Using feeler gauges, measure the clearance between the side

gear back and differential case at three different points, while

rotating the side gear. Average the three readings to calculate

the clearance. (Measure the clearance of the other side as well.)

• If the side gear back clearance is outside of the specification,

use a thicker or thinner side gear thrust washer to adjust.

Refer to 

DLN-270, "Inspection and Adjustment"

.

CAUTION:

• Insert feeler gauges with the same thickness on both

sides to prevent side gear from tilting.

• Each gear should rotate smoothly without excessive

resistance during differential motion.

• Select a side gear thrust washer for right and left individually.

NOTE:

Side gear back clearance is clearance between side gear and differential case for adjusting side gear

backlash.

Side Bearing Preload Torque

• A selection of side bearing adjusting washers is required for successful completion of this procedure.

PDIA0460E

Side gear back 
clearance

: Refer to 

DLN-270, "Inspection 

and Adjustment"

If the side gear back clearance is greater than 
specification:

Use a thicker side gear thrust washer.

If the side gear back clearance is less than spec-
ification:

Use a thinner side gear thrust washer.

PDIA0576E