lock INFINITI QX56 2011 Factory Service Manual

DRIVE PINIONDLN-177
< UNIT DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: R180A]
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DisassemblyINFOID:0000000006222397
1. Remove the side shaft. Refer to DLN-165, "Disassembly".
2. Remove the differential assembly. Refer to DLN-168, "
Disassembly".
3. Remove the drive pinion lock nut with a flange wrench (commer- cial service tool).
4. Put matching mark (B) on the end of drive pinion. The matching mark should be in line with the matching mark (A) on companion
flange (1).
CAUTION:
For matching, marks use paint. Never damage companion
flange and drive pinion.
5. Remove the companion flange with the puller (commercial ser- vice tool).
6. Press the drive pinion assembly. CAUTION:
Never drop drive pinion assembly.
: 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.
PDIA0702E
PDIA0799J
PDIA0703E
PDIA0704E
Revision: 2010 May2011 QX56

DLN-180
< UNIT DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: R180A]
DRIVE PINION
7. Using drift [SST: ST33200000 (J-26082)], press the pinion front
bearing inner race to drive pinion as far as drive pinion nut can
be tightened.
8. Install front oil seal as shown in figure with the drifts (A and B). 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.
9. 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).
10. Temporarily tighten drive pinion lock nut to drive pinion. CAUTION:
 Apply anti-corrosion oil to th e thread and seat of the drive
pinion lock nut
 Never reuse drive pinion lock nut.
11. Tighten to drive pinion lock nut using flange wrench (A), while adjusting pinion bearing preload torque using preload gauge (B).
CAUTION:
 Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.
 After adjustment, rotate dri ve pinion back and forth 2 to 3
times to check for unusual no ise, rotation malfunction,
and other malfunctions.
12. Install differential case assembly. Refer to DLN-169, "
Assem-
bly".
CAUTION:
PDIA0709E
A: Drift [SST: ST30720000 (J-25405)]
B: Drift [SST: ST27863000 ( — )]
PDIA0717E
PDIA0799J
A: Flange wrench (commercial service tool)
B: Preload gauge [SST: ST3127S000 (J-25765-A)]
Pinion bearing preload : Refer to DLN-185, "Pre-
load Torque".
WDIA0382E
Revision: 2010 May2011 QX56

DRIVE PINIONDLN-181
< UNIT DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: R180A]
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Never install carrier cover yet.
13. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash. Refer to DLN-171,
"Adjustment".
14. Install side shaft. Refer to DLN-166, "
Assembly".
15. Check and adjust companion flange runout. Refer to DLN-181, "
Adjustment".
16. Check total preload torque. Refer to DLN-171, "
Adjustment".
17. Install carrier cover. Refer to DLN-169, "
Assembly".
AdjustmentINFOID:0000000006222399
PINION GEAR HEIGHT
1. Make sure all parts are clean and that the bearings are well
lubricated.
2. Assemble the pinion gear beari ngs into the differential shim
selector tool [SST: — (J-34309)].
 Pinion front bearing; make sure the J-34309-3 pinion front
bearing seat is secured tightly against the J-34309-2 gauge
anvil. Then turn the pinion front bearing pilot, J-34309-7, to
secure the bearing in its proper position.
 Pinion rear bearing; the pinion rear bearing pilot, J-34309-8,
is used to center the pinion rear bearing only. The pinion rear
bearing locking seat, J-34309-4, is used to lock the bearing to
the assembly.
 Installation of J-34309-9 and J-34309-16; place a suitable
2.5 mm (0.098 in) thick plain washer between J-34309-9 and
J-34309-16. Both surfaces of J-34309-9 and J-34309-16 must
be parallel with a clearance of 2.5 mm (0.098 in).
3. Install the pinion rear bearing inner race into gear carrier. Then place the pinion preload shim selector tool, J-34309-1, gauge
screw assembly.
4. Assemble the pinion front bearing inner race and the J-34309-2 gauge anvil. Assemble them together with the J-34309-1 gauge
screw in gear carrier. Make sure that the pinion height gauge
plate, J-34309-16, turns a full 360 degrees. Tighten the two sec-
tions together by hand.
SPD769
SPD197A
SPD893
SPD199A
Revision: 2010 May2011 QX56

DLN-190
< PREPARATION >[REAR FINAL DRIVE: R230]
PREPARATION
Tool name
Description
Flange wrench Removing and installing drive pinion lock nut
Puller Removing companion flange
Sliding hammer Removing differential case assembly
Puller Removing drive pinion rear bearing inner race
Spacer
a: 60 mm (2.36 in) dia.
b: 36 mm (1.42 in) dia.
c: 30 mm (1.18 in) Installing drive pinion front bearing inner race
Power tool Loosing nuts and bolts
NT035
ZZA0119D
NT125
ZZA0700D
ZZA1133D
PBIC0190E
Revision: 2010 May2011 QX56

DLN-194
< REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
FRONT OIL SEAL
REMOVAL AND INSTALLATION
FRONT OIL SEAL
Exploded ViewINFOID:0000000006222414
Removal and InstallationINFOID:0000000006222415
REMOVAL
CAUTION:
Verify identification stamp of replacement frequency pu
t in the lower part of gear carrier to determine
replacement for collapsible spacer when replacing front oil seal. Refer to “Identification stamp of
replacement frequency of front oil seal”. If coll apsible spacer replacement is necessary, remove final
drive assembly and disassemble it to replace front oil seal and collapsible spacer.
NOTE:
The reuse of collapsible spacer is pr ohibited in principle. However, it is reusable on a one-time basis
only in cases when replacing front oil seal.
Identification Stamp of Replacement Frequency of Front Oil Seal
 The diagonally shaded area in the figure shows stamping point for replacement frequency of front oil seal.
 The following table shows if collapsible spacer replacement is needed before replacing front oil seal.
When collapsible spacer replacement is required, disassemble
final drive assembly to replace collapsible spacer and front oil seal.
Refer to DLN-217, "
Disassembly".
1. Final drive assembly 2. Front oil seal 3. Companion flange
4. Drive pinion lock nut
A. Oil seal lip
: Vehicle front
: Apply gear oil. : Apply anti-corrosion oil.
Refer to GI-4, "
Components" for symbols not described above.
JPDID0393GB
Stamp collapsible spacer replacement
No stamp Not required
PDIA0976E
Revision: 2010 May2011 QX56

DLN-196
< REMOVAL AND INSTALLATION >[REAR FINAL DRIVE: R230]
FRONT OIL SEAL
7. Put matching mark (B) on the end of the drive pinion. The
matching mark (A) on companion flange (1).
CAUTION:
For matching mark, use pain t. Never damage companion
flange and drive pinion.
8. Remove the drive pinion lock nut using a flange wrench (com- mercial service tool).
9. Remove the companion flange using a puller (commercial ser- vice tool).
10. Remove the front oil seal using the puller (A) [SST: KV381054S0 (J-34286)].
INSTALLATION
JSDIA0038ZZ
JSDIA0039ZZ
JSDIA0040ZZ
PDIA0980E
Revision: 2010 May2011 QX56

FRONT OIL SEALDLN-197
< REMOVAL AND INSTALLATION > [REAR FINAL DRIVE: R230]
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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 t he drift (A) [SST: ST15310000 (J-
25640-B)].
CAUTION:
 Never reuse front oil seal.
 Never incline the new front oil seal when installing.
2. Align the matching mark (B) of drive pinion with the matching mark (A) of companion flange (1), and then install the compan-
ion flange.
3. Apply anti-corrosion oil to the thread and seat of new drive pin- ion lock nut, and temporarily tighten drive pinion lock nut to drive
pinion, using a flange wrench (commercial service tool).
CAUTION:
Never reuse drive pinion lock nut.
4. Tighten drive pinion lock nut within the limits of specified torque so as to keep the pinion bearing preload within a standard val-
ues, using the preload gauge (A) [SST: ST3127S000 (J-25765-
A)].
CAUTION:
 Adjust to the lower limit of the drive pinion lock nut tight-
ening torque first.
 If the preload torque exceeds the specified value, replace
collapsible spacer and tighte n it again to adjust. Never
loosen drive pinion lock nut to adjust the preload torque.
5. Fit a test indicator to the inner side of companion flange (socket diameter).
6. Rotate companion flange to check for runout.
 If the runout value is outside the runout limit, follow the proce-dure below to adjust.
- Check for runout while changing the phase between compan-
ion flange and drive pinion by 90 ° step, and search for the
position where the runout is the minimum.
PDIA0752J
JSDIA0038ZZ
Total preload torque : A value that add 0.1 – 0.4
N·m (0.01 – 0.04 kg-m, 0.9 –
3.5 in-lb) to the measured
value before removing.
PDIA1007E
Companion flange runout : Refer to DLN-222, "Com-
panion Flange Runout".
JPDID0399ZZ
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-206
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DIFFERENTIAL ASSEMBLY
13. Remove lock pin of pinion mate shaft with a punch from drive
gear side.
14. Remove pinion mate shaft.
15. Turn pinion mate gear, then remove pinion mate gear, pinion mate thrust washer, side gear and side gear thrust washer from
differential case.
16. Perform inspection after disassembly. Refer to DLN-215,
"Inspection".
AssemblyINFOID:0000000006222422
1. Install side gear thrust washers with the same thickness as the
ones installed prior to disassembly or reinstall the old ones on
the side gears.
PDIA0759J
SDIA0031J
SDIA0032J
SDIA0193J
Revision: 2010 May2011 QX56