Infiniti QX56 (JA60). Manual — part 330

DESCRIPTION

DLN-243

< SYMPTOM DIAGNOSIS >

[REAR FINAL DRIVE: R230]

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DESCRIPTION

Cross-Sectional View

INFOID:0000000005148929

1.

Side flange

2.

Pinion mate gear

3.

Drive gear

4.

Pinion mate shaft

5.

Differential case

6.

Side bearing

7.

Drive pinion

8.

Drive pinion front bearing

9.

Companion flange

10. Collapsible spacer

11. Drive pinion rear bearing

12. Side gear

WDIA0119E

DLN-244

< ON-VEHICLE MAINTENANCE >

[REAR FINAL DRIVE: R230]

DIFFERENTIAL GEAR OIL

ON-VEHICLE MAINTENANCE

DIFFERENTIAL GEAR OIL

Changing Rear Differential Gear Oil

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DRAINING

1. Stop the engine.
2. Remove the drain plug and gasket from the rear final drive

assembly to drain the differential gear oil.

3. Install the drain plug with a new gasket to the rear final drive

assembly. Tighten to the specified torque. Refer to

DLN-253,

"Disassembly and Assembly"

.

CAUTION:

Do not reuse gasket.

FILLING

1. Remove the filler plug and gasket from the rear final drive

assembly.

2. Fill the rear final drive assembly with new differential gear oil

until the level reaches the specified level near the filler plug hole.

3. Install the filler plug with a new gasket on it to the rear final drive

assembly. Tighten to the specified torque. Refer to

DLN-253,

"Disassembly and Assembly"

.

CAUTION:

Do not reuse gasket.

Checking Rear Differential Gear Oil

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OIL LEAKAGE AND OIL LEVEL

1. Make sure that differential gear oil is not leaking from the rear final drive assembly or around it.
2. Check the differential gear oil level from the filler plug hole as

shown.

CAUTION:

Do not start engine while checking differential gear oil level.

3. Install the filler plug with a new gasket on it to the rear final drive

assembly. Tighten to the specified torque. Refer to

DLN-253,

"Disassembly and Assembly"

.

CAUTION:

Do not reuse gasket.

LLIA0068E

Differential gear oil
grade and capacity

: Refer to

MA-13, "Fluids and

Lubricants"

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LLIA0068E

LLIA0068E

FRONT OIL SEAL

DLN-245

< ON-VEHICLE REPAIR >

[REAR FINAL DRIVE: R230]

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ON-VEHICLE REPAIR

FRONT OIL SEAL

Removal and Installation

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REMOVAL

1. Remove the drive shafts from the rear final drive assembly. Refer to

RAX-10, "Removal and Installation"

.

2. Remove the side flanges and side oil seals. Refer to

DLN-247, "Removal and Installation"

.

3. Remove the rear propeller shaft. Refer to

DLN-196, "Removal and Installation"

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4. Measure the total preload torque. Refer to

DLN-253, "Disassembly and Assembly"

.

NOTE:

Record the total preload torque measurement.

5. Remove the drive pinion lock nut using suitable tool.

6. 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.

7. Remove the companion flange using suitable tool.

8. Remove the front oil seal using Tool.

INSTALLATION

SDIA1142E

SDIA1054E

Tool number

: KV381054S0 (J-34286)

SDIA0485E

DLN-246

< ON-VEHICLE REPAIR >

[REAR FINAL DRIVE: R230]

FRONT OIL SEAL

1. Apply multi-purpose grease to the lips of the new front oil seal.

Then drive the new front oil seal in evenly until it becomes flush

with the gear carrier using Tool.

CAUTION:

• Do not reuse front oil seal.

• Do not incline the new front oil seal when installing.

• Apply multi-purpose grease to the lips of the new front oil

seal.

2. Install the companion flange to the drive pinion while aligning the matching marks.
3. Apply anti-corrosive oil to the threads of the drive pinion and the

seating surface of the new drive pinion lock nut. Then adjust the

drive pinion lock nut tightening torque using suitable tool (A),

and check the total preload torque using Tool (B).

• The total preload torque should be within the total preload

torque specification. When not replacing the collapsible

spacer, it should also be equal to the measurement taken dur-

ing removal plus an additional 0.56 N·m (0.06 Kg-m, 5 in-lb).

• If the total preload torque is low, tighten the drive pinion lock

nut in 6.8 N·m (0.69 Kg-m, 5ft-lb) increments until the total pre-

load torque is met.

CAUTION:

• Do not reuse drive pinion lock nut.

• Apply anti-corrosive oil to the threads of the drive pinion

and the seating surface of the new drive pinion lock nut.

• Adjust the drive pinion lock nut tightening torque to the

lower limit first. Do not exceed the drive pinion lock nut

specified torque. Refer to

DLN-253, "Disassembly and

Assembly"

.

• Do not loosen drive pinion lock nut to adjust the total preload torque. If the total preload torque

exceeds the specifications, replace the collapsible spacer and tighten it again to adjust. Refer to

DLN-253, "Disassembly and Assembly"

.

• After adjustment, rotate drive pinion back and forth 2 to 3 times to check for unusual noise, rota-

tion malfunction, and other malfunctions.

4. Installation of the remaining components is in the reverse order of removal.

CAUTION:

Check the differential gear oil level after installation. Refer to

DLN-244, "Checking Rear Differential

Gear Oil"

.

Tool number

: ST15310000 ( — )

PDIA0565E

Tool number

B: ST3127S000 (J-25765-A)

Total preload torque: Refer to

DLN-253, "Disassem-

bly and Assembly"

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WDIA0380E