2011 INFINITI QX56 differential

DLN-152
< PREPARATION >[FRONT FINAL DRIVE: R180A]
PREPARATION
Puller
Removing companion flange
Drift
a: 63 mm (2.48 in) dia. or less
b: 49 mm (1.93 in) dia. or more Removing and Installing bushing
Sliding hammer Removing differential case assembly
Replacer Removing pinion rear bearing inner race
Tool name
Description
ZZA0119D
ZZA0811D
NT125
ZZA0700D
Revision: 2010 May2011 QX56

STRUCTURE AND OPERATIONDLN-153
< SYSTEM DESCRIPTION > [FRONT FINAL DRIVE: R180A]
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SYSTEM DESCRIPTION
STRUCTURE AND OPERATION
Sectional ViewINFOID:0000000006222376
1. Side shaft 2. Side shaft bearing 3. Side gear
4. Drive gear 5. Pinion mate shaft 6. Differential case
7. Side bearing 8. Pinion mate gear 9. Drive pinion
10. Collapsible spacer 11. Companion flange 12. Pinion front bearing
13. Pinion rear bearing 14. Housing spacer
PDIA0695E
Revision: 2010 May2011 QX56

FRONT DIFFERENTIAL GEAR OILDLN-155
< PERIODIC MAINTENANCE > [FRONT FINAL DRIVE: R180A]
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PERIODIC MAINTENANCE
FRONT DIFFERENTIAL GEAR OIL
InspectionINFOID:0000000006222378
OIL LEAKAGE
Check that oil is not leaking from the front final drive assembly or around it.
OIL LEVEL
 Remove filler plug (1) and check oil level from filler plug mounting
hole as shown in the figure.
CAUTION:
Never start engine while checking oil level.
 Set a gasket on filler plug (1) and install it on final drive assembly. Refer to DLN-167, "
Exploded View".
CAUTION:
Never reuse gasket.
DrainingINFOID:0000000006222379
1. Stop engine.
2. Remove drain plug (1) and drain gear oil.
3. Set a gasket on drain plug (1) and install it to final drive assem- bly and tighten to the specified torque. Refer to DLN-167,
"Exploded View".
CAUTION:
Never reuse gasket.
RefillingINFOID:0000000006222380
1. Remove filler plug (1). Fill with new gear oil until oil level reaches the specified level near filler plug mounting hole.
2. After refilling oil, check oil level. Set a gasket to filler plug (1), then install it to final drive assembly. Refer to DLN-167,
"Exploded View".
CAUTION:
Never reuse gasket.
JPDID0312ZZ
JPDID0313ZZ
Oil grade and Viscosity : Refer to MA-10, "Fluids
and Lubricants".
Oil capacity : Refer to DLN-185, "
Gen-
eral Specifications".
JPDID0312ZZ
Revision: 2010 May2011 QX56

DLN-158
< REMOVAL AND INSTALLATION >[FRONT FINAL DRIVE: R180A]
FRONT OIL SEAL
8. Remove the companion flange using puller (commercial service
tool).
9. Remove front oil seal using the puller [SST: KV381054S0 (J- 34286)].
INSTALLATION
1. Drive the front oil seal in evenl y until it becomes flush with the
gear carrier using drifts (A and B).
CAUTION:
 Never reuse oil seal.
 Never incline oil seal when installing.
 Apply multi-purpose grease to the lips and differential
gear oil to the circumference of oil seal.
2. Install companion flange (1). NOTE:
When reusing drive pinion, align the matching mark (B) of drive
pinion with the matching mark (A) of companion flange, and then
install companion flange (1).
LDIA0171E
LDIA0172E
A: Drift [SST: ST30720000 (J-25405)]
B: Drift [SST: ST27863000 ( — )]
WDIA0147E
PDIA0799J
Revision: 2010 May2011 QX56

DLN-160
< REMOVAL AND INSTALLATION >[FRONT FINAL DRIVE: R180A]
SIDE OIL SEAL
SIDE OIL SEAL
Exploded ViewINFOID:0000000006222383
Removal and InstallationINFOID:0000000006222384
REMOVAL
1. Drain gear oil. Refer to
DLN-155, "Draining".
2. Remove the drive shafts from the front final drive assembly. Refer to FAX-22, "
Removal and Installation".
3. Remove the side oil seal using suitable tool. CAUTION:
Never damage gear carrier.
INSTALLATION
1. Drive the new side oil seal in evenly until it becomes flush withthe gear carrier using drifts (A and B).
CAUTION:
 Never reuse side oil seal.
 Never incline the new side oil seal when installing.
 Apply multi-purpose grease to the lips and differential gear oil to the circumference of the new side oil seal.
1. Front final drive assembly 2. Side oil seal
A. Oil seal lip
: Apply gear oil.: Apply multi-purpose grease.
Refer to GI-4, "
Components" for symbols not described on the above.
JPDID0387ZZ
LDIA0173E
A: Drift [SST: ST30720000 (J-25405)]
B: Drift [SST: ST27863000 ( — )]
PDIA0826E
Revision: 2010 May2011 QX56

DLN-162
< UNIT REMOVAL AND INSTALLATION >[FRONT FINAL DRIVE: R180A]
FRONT FINAL DRIVE ASSEMBLY
UNIT REMOVAL AND INSTALLATION
FRONT FINAL DRIVE ASSEMBLY
Exploded ViewINFOID:0000000006222385
Removal and InstallationINFOID:0000000006222386
REMOVAL
1. Drain the differential gear oil. Refer to
DLN-155, "Draining".
2. Remove the drive shafts. Refer to FAX-22, "
Removal and Installation".
3. Remove the front propeller shaft from the front final drive assembly. Refer to DLN-129, "
Removal and
Installation".
4. Disconnect the breather hose from the front final drive assembly.
5. Support the front final drive assembly using a suitable jack.
6. Remove the front final drive assembly bolts, then remo ve the front final drive assembly with a power tool.
CAUTION:
Secure the front final drive assembly to a suitable jack while removing it.
INSTALLATION
Note the following, and installation is in the reverse order of removal.
CAUTION:
Check that there are no pinched or restricted areas on the breather hose caused by bending or wind-
ing when installing it.
1. Front final drive assembly
Refer to GI-4, "
Components" for symbols in figure.
JPDID0388GB
Revision: 2010 May2011 QX56

DLN-164
< UNIT DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: R180A]
SIDE SHAFT
UNIT DISASSEMBLY AND ASSEMBLY
SIDE SHAFT
Exploded ViewINFOID:0000000006222387
1. Bushing 2. Bearing cap 3. Side bearing
4. Side bearing adjusting washer 5. Drive pinion 6. Pinion height adjusting washer
7. Pinion rear bearing 8. Collapsible spacer 9. Gasket
10. Drain plug 11. Side oil seal (left side) 12. Pinion front bearing
13. Front oil seal 14. Companion flange 15. Drive pinion lock nut
16. Gear carrier 17. Side shaft 18. Side shaft bearing
19. Snap ring 20. Snap ring 21. Side oil seal (right side)
22. Drive gear 23. Differential case assembly 24. Housing spacer
25. Filler plug 26. Carrier cover
A: Oil seal lip B: Screw hole C. Comply with the assembly proce-
dure when tightening. Refer to DLN-
169, "Assembly".
: Apply gear oil. : Apply anti-corrosion oil.
JPDID0390GB
Revision: 2010 May2011 QX56

SIDE SHAFTDLN-165
< UNIT DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: R180A]
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DisassemblyINFOID:0000000006222388
1. Drain the differential gear oil if necessary.
2. Remove the carrier cover bolts
3. Remove carrier cover to insert the seal cutter (A) [SST: KV10111100 (J-37228)] between gear carrier and carrier cover.
CAUTION:
 Never damage the mating surface.
 Never insert flat-bladed screwdriver, this will damage themating surface.
4. Remove side oil seal (right side) with a suitable tool. CAUTION:
Never damage gear carrier.
5. Remove snap ring (hole side) with a suitable tool.
6. Remove differential side shaft assembly out of gear carrier with a suitable tool.
NOTE:
Tap on differential side shaft assembly from side gear side.
7. Remove snap ring (differential side shaft side).
: Apply multi-purpose grease.
: Apply Genuine Silicone RTV or equivalent. Refer to GI-22, "
Recommended Chemical Products and Sealants".
: Apply Genuine High Strength Thread Locking Sealant or equivalent. Refer to GI-22, "
Recommended Chemical Products
and Sealants".
Refer to GI-4, "
Components" for symbols not described above.
PDIA0699E
PDIA0713E
PDIA0714E
JPDID0383ZZ
Revision: 2010 May2011 QX56