Infiniti QX56 (JA60). Manual - part 324

FRONT FINAL DRIVE

DLN-219

< 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-234, "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-234, "Inspection and Adjustment"

.

SPD357

SDIA0570E

SDIA0517E

PDIA0440E

PDIA0441E

DLN-220

< DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

FRONT FINAL DRIVE

Backlash

1. Fit a dial indicator to the drive gear face to measure the back-

lash.

• If the backlash is outside of the specification, adjust each side

bearing adjuster.

CAUTION:

Do not change the side bearing adjusters by different

amounts as it will change the side bearing preload torque.

Companion Flange Runout

1. Rotate companion flange and check for runout on the compan-

ion flange face (inner side of the bolt holes) and companion

flange inner side (socket diameter) using suitable tool.

2. If the runout is outside 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 pin-

ion, possible cause could be an assembly malfunction of drive pinion and drive pinion bearing or a mal-

functioning drive pinion bearing.

c.

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

Differential Assembly

1. Drain the differential gear oil if necessary.

Backlash

: Refer to 

DLN-234, "Inspection and Ad-

justment"

SPD513

If the backlash is greater than specification:

Loosen side bearing adjuster A and tighten side bear-
ing adjuster B by the same amount.

If the backlash is less than specification:

Loosen side bearing adjuster B and tighten side bear-
ing adjuster A by the same amount.

SDIA2262E

Runout limit
Companion flange face

: Refer to 

DLN-234, "Inspec-

tion and Adjustment"

Companion flange inner 
side

: Refer to 

DLN-234, "Inspec-

tion and Adjustment"

SDIA2078E

FRONT FINAL DRIVE

DLN-221

< DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

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2. Remove the differential side shaft and differential side flange

using suitable tool.

3. Remove the extension tube and O-ring from the gear carrier.

4. Place a small hole in the side oil seal case using suitable tool.

5. Remove the side oil seal using Tool as shown.

6. 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.

BDIA0006E

SDIA3205E

LDIA0129E

Tool number

: SP8P

LDIA0130E

Tool number

: KV10111100 (J-37228)

PDIA0699E

DLN-222

< DISASSEMBLY AND ASSEMBLY >

[FRONT FINAL DRIVE: M205]

FRONT FINAL DRIVE

7. 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.

8. Remove the side bearing caps.

9. Remove the side bearing adjuster.

10. Lift the differential case assembly out of the gear carrier. 

CAUTION:

Keep side bearing outer races together with side bearing

inner races. Do not mix them up.

11. Remove side bearing inner race using Tools as shown.

CAUTION:

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

replaced.

• Place copper plates between the vise and the side bearing

inner race and drive gear to prevent damage.

• Engage puller jaws in groove to prevent damage to bear-

ing.

PDIA0700E

PDIA0701E

SDIA2230E

SPD527

Tool number

A: ST33081000 ( — )
B: ST30021000 ( — )

SDIA2237E