2011 INFINITI QX56 oil

SIDE OIL SEALDLN-199
< REMOVAL AND INSTALLATION > [REAR FINAL DRIVE: R230]
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SIDE OIL SEAL
Exploded ViewINFOID:0000000006222416
Removal and InstallationINFOID:0000000006222417
REMOVAL
1. Drain gear oil. Refer to DLN-193, "Draining".
2. Remove the drive shaft from the rear final drive assembly. Refer to RAX-11, "
Removal and Installation".
3. Remove the side flange using sliding hammer and attachment.
NOTE:
Circular clip installation position: Side flange side
4. Remove the side oil seal using a suitable tool. CAUTION:
Never damage gear carrier.
INSTALLATION
1. Final drive assembly 2. Side oil seal 3. Side flange
A. Oil seal lip
: Apply anti-corrosion oil.
: Apply gear oil.
Refer to GI-4, "
Components" for symbols not described above.
JPDID0234ZZ
A : Attachment [SST: KV40104100 ( — )]
B : Sliding hammer [SST: ST36230000 (J-25840-A)]
JSDIA1040ZZ
Revision: 2010 May2011 QX56

DLN-200
< REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
SIDE OIL SEAL
1. Install side oil seal until it becomes flush with the case end,
using the drift (A) [SST: ST35271000 (J-26091)].
CAUTION:
 Never reuse side oil seal.
 Never incline the new side oil seal when installing.
 Apply multi-purpose grease to the lips of the new side oil
seal.
2. Install the side flange with the following procedure.
a. Install the protector [SST: KV38108000 ( — )] to the side oil seal as shown.
b. Insert the side flange until the se rrated part of the side flange
has engaged the serrated part of the side gear and remove the
Tool.
c. Drive in the side flange using suitable tool. NOTE:
Installation is completed when the driving sound of the side
flange turns into a sound which seems to affect the whole rear
final drive assembly.
d. Confirm that the dimension of the side flanges (1) installation measurement (A) in the figure comes into the following.
3. Install drive shaft. Refer to RAX-11, "
Removal and Installation".
4. Refill gear oil to final drove and check oil level. Refer to DLN-
193, "Refilling".
5. When oil leaks while removing, check oil level after the installa- tion. Refer to DLN-193, "
Inspection".
PDIA1008E
SDIA0822E
A : 342.2 mm (13.47 in)
JSDIA0185ZZ
Revision: 2010 May2011 QX56

DLN-202
< UNIT REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
REAR FINAL DRIVE
5. Set a suitable jack to rear final drive assembly.
CAUTION:
Never place a jack under the rear cover (aluminum case).
6. Remove the mounting bolts and nuts connecting to the suspen- sion member with power tool. And then, remove rear final drive
assembly.
CAUTION:
Secure rear 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.
 In (A) position, install the breather hose (1) until dimension (D) shown as follows.
CAUTION:
 Never reuse hose clamp.
 Install the hose clamp, wit h the tab facing downward.
 In (B) position, install the breather hose (2) until hose reaches the
plane tube surface connector.
CAUTION:
 Never reuse hose clamp.
 Install the hose clamp, with the tab facing righ tward and upward direction of the vehicle at 45°.
 In (C) position, install the breather hose (2) until dimension (E) shown as follows.
 Install breather hose (1) and (2), breather tube (3) and metal con- nector (4) as shown in the figure.
- Fix breather hose (2) with clip in (A) position CAUTION:
Never reuse clip.
- Install metal connector (4) to rear cover with a part to insert breather hose with facing vehicle left.
CAUTION:
Never reuse metal connector.
- Fix a point with paint mark (B) of breather tube (3) in (C) position.
- Fix breather tube (3) in (D) position.
 When oil leaks while removing final drive assembly, check oil level after the installation. Refer to DLN-193, "
Inspection".
JSDIA0132ZZ
: Vehicle front
D : 20 mm (0.79 in)
E : 20 mm (0.79 in)
: Vehicle front
JPDID0395ZZ
JPDID0396ZZ
Revision: 2010 May2011 QX56

DIFFERENTIAL ASSEMBLYDLN-203
< UNIT DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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UNIT DISASSEMBLY AND ASSEMBLY
DIFFERENTIAL ASSEMBLY
Exploded ViewINFOID:0000000006222420
1. Rear cover 2. Bearing cap 3. Side gear thrust washer
4. Side gear 5. Pinion mate thrust washer 6. Pinion mate gear
7. Pinion mate shaft 8. Lock pin 9. Side bearing
10. Side bearing adjusting washer 11. Drive pinion 12. Pinion height adjusting washer
13. Pinion rear bearing 14. Collapsible spacer 15. Side flange
16. Circlip 17. Side oil seal 18. Gear carrier
19. Pinion front bearing 20. Front oil seal 21. Companion flange
22. Drive pinion lock nut 23. Drive gear 24. Differential case
25. Gasket 26. Drain plug 27. Filler plug
A. Oil seal lip B. Screw hole C. Co mply with the assembly proce-
dure when tightening. Refer to DLN-
206, "Assembly".
: Apply gear oil. : Apply anti-corrosion oil.
JPDID0397GB
Revision: 2010 May2011 QX56

DLN-204
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DIFFERENTIAL ASSEMBLY
Disassembly
INFOID:0000000006222421
1. Drain gear oil, if necessary.
2. Remove side flanges.
3. Remove rear cover mounting bolts.
4 . R e m o v e r e a r c o v e r t o i n s e r t t h e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 (J-37228)] between gear carrier and rear cover.
CAUTION:
 Never damage the mating surface.
 Never insert flat-bladed screwdriver, this may damage themating surface.
5. Using spacers, mount carrier on the attachment (A) [SST:
KV38100800 (J-25604-01)].
6. For proper reinstallation, paint matching marks on one side of the bearing cap.
CAUTION:
 For matching marks, use paint. Never damage bearingcaps and gear carrier.
 Bearing caps are manufactured as integral molding. Use the matching marks to them in their original positions.
7. Remove bearing caps.
: 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.
PDIA0940E
JSDIA0041ZZ
SDIA1795E
S-PD343
Revision: 2010 May2011 QX56

DLN-208
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DIFFERENTIAL ASSEMBLY
b. Using feeler gauge, measure the clearance between side gear
back and differential case at 3 different points, while rotating
side gear. Average the 3 readings, and then measure the clear-
ance of the other side as well.
CAUTION:
To prevent side gear from tilt ing, insert feeler gauges with
the same thickness from both sides.
c. If the back clearance is outside the specification, use a thicker/ thinner side gear thrust washer to adjust. For selecting thrust
washer, refer to the latest parts information.
CAUTION:
Select a side gear thrust wash er for right and left individu-
ally.
6. Drive a lock pin into pinion mate shaft, using a punch. Make sure lock pin is flush with differential case.
CAUTION:
Never reuse lock pin.
7. Apply thread locking sealant into the thread hole of drive gear.  Use Genuine High Strength Thread Locking Sealant or equiv-alent. Refer to GI-22, "
Recommended Chemical Products and
Sealants".
CAUTION:
Clean and degrease drive gear back and threaded holes
sufficiently.
8. Install drive gear to differential case. CAUTION:
Align the matching marks of differential case and drive
gear.
9. Tighten the mounting bolts with the following procedure. CAUTION:
Apply anti-corrosin oil to th e thread and seat of mounting
bolts.
a. Tighten the bolts in a crisscross fashion to the specified torque.
b. Tighten the bolts additionally to the specified angle. Standard
Side gear back clearance : Refer to
DLN-222, "
Side
Gear Clearance".
When the back clearance
is large: Use a thicker thrust wash-
er.
When the back clearance
is small: Use a thinner thrust wash-
er.
PDIA0576E
SPD030
SDIA2594E
Drive gear mounting
bolts tightening torque: 78.5 Nm (8.0 kg-m, 58 ft-lb)
SDIA0247J
Revision: 2010 May2011 QX56

DLN-210
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DIFFERENTIAL ASSEMBLY
16. Using the drift [SST: ST35271000 (J-26091)], drive side oil seals
until it becomes flush with the case end.
CAUTION:
 Never reuse oil seal.
 When installing, n ever incline oil seal.
 Apply multi-purpose grease onto oil seal lips, and gear oil
onto the circumference of oil seal.
17. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and total preload torque. Refer to DLN-
210, "Adjustment".
Recheck above items. Readjust the above description, if neces-
sary.
18. Apply sealant to mating surface of rear cover.  Use Genuine Silicone RTV or equivalent. Refer to GI-22,
"Recommended Chemical Products and Sealants".
CAUTION:
Remove old sealant adhering to mounting surfaces. Also
remove any moisture, oil, or foreign material adhering to
application and mounting surfaces.
19. Install rear cover on gear carrier and tighten mounting bolts.
20. Install side flange with the following procedure.
a. Attach the protector [SST: KV38108000 ( — )] to side oil seal.
b. After the side flange is inserted and the serrated part of side gear has engaged the serrated part of flange, remove the pro-
tector.
c. Insert the side flange until the se rrated part of the side flange
has engaged the serrated part of the side gear and remove the
protector.
NOTE:
When installation is completed, driving sound of the side flange
turns into a sound that seems to affect the whole final drive.
d. Confirm that the dimension of the side flanges (1) installation measurement (A) in the figure comes into the following.
AdjustmentINFOID:0000000006222423
TOTAL PRELOAD TORQUE
Before inspection and adjustment, drain gear oil.
1. Secure final drive assembly onto an attachment [SST: KV38100800 ( — )].
2. Remove side flanges.
3. Rotate drive pinion back and forth 2 to 3 times to check for unusual noise and rotation malfunction.
SPD560
PDIA0961E
SDIA0822E
A : 342.2 mm (13.47 in)
JSDIA0185ZZ
Revision: 2010 May2011 QX56

DIFFERENTIAL ASSEMBLYDLN-211
< UNIT DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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4. Rotate drive pinion at least 20 times to check for smooth opera- tion of the bearing.
5. Measure total preload with the preload gauge (A) [SST: ST3127S000 (J-25765-A)].
NOTE:
Total preload torque = Pinion bearing preload torque + Side
bearing preload torque
 If measured value is out of the specification, disassemble it to
check and adjust each part. Adjust the pinion bearing preload and side bearing preload.
Adjust the pinion bearing preload firs t, then adjust the side bearing preload.
SIDE BEARING PRELOAD
Before inspection and adjustment, drain gear oil.
1. Remove rear cover. Refer to DLN-204, "
Disassembly".
2. Make sure all parts are clean. Also, make sure the bearings are well lubricated with gear oil.
3. Place the differential case, with side bearings and bearing races installed, into gear carrier.
4. Insert left and right original side bearing adjusting washers in place between side bearings and gear carrier.Total preload torque : Refer to
DLN-222, "
Pre-
load Torque".
JSDIA0042ZZ
When the preload torque is large
On pinion bearings: Replace the collapsible spacer.
On side bearings: Use thinner side bearing adjusting washers by the same amount to
each side. For selecting adjusting wash er, refer to the latest parts in-
formation.
When the preload is small On pinion bearings: Tighten the drive pinion lock nut.
On side bearings: Use thicker side bearing adjusting washers by the same amount to
each side. For selecting adjusting wash er, refer to the latest parts in-
formation.
SPD527
SPD558
Revision: 2010 May2011 QX56