lock INFINITI QX56 2011 Factory Service Manual

PREPARATIONDLN-151
< PREPARATION > [FRONT FINAL DRIVE: R180A]
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Commercial Service ToolINFOID:0000000006222375
ST30901000
(J-26010-01)
Drift
a: 79 mm (3.11 in) dia.
b: 45 mm (1.77 in) dia.
c: 35.2 mm (1.386 in) dia. Installing drive pinion rear bearing inner race
ST33200000
(J-26082)
Drift
a: 60 mm (2.36 in) dia.
b: 44.5 mm (1.752 in) dia. Installing drive pinion front bearing inner race
—
(J-34309)
Differential shim selector tool Adjusting bearing preload and pinion gear
height
—
(J-25269-18)
Side bearing disc (2 Req ′d) Selecting pinion height adjusting washer
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA0978D
ZZA1002D
NT134
NT135
Tool name
Description
Power tool Loosening bolts and nuts
Flange wrench Removing and installing drive pinion lock nut
PBIC0190E
NT035
Revision: 2010 May2011 QX56

DLN-156
< REMOVAL AND INSTALLATION >[FRONT FINAL DRIVE: R180A]
FRONT OIL SEAL
REMOVAL AND INSTALLATION
FRONT OIL SEAL
Exploded ViewINFOID:0000000006222381
Removal and InstallationINFOID:0000000006222382
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 fron t oil seal and collapsible spacer. Refer to DLN-162,
"Removal and Installation" and DLN-168, "Disassembly".
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-168, "
Disassembly".
1. Front final drive assembly 2. Front oil seal 3. Companion flange
4. Drive pinon lock nut
A. Oil seal lip
: Apply multi-purpose grease.: Apply anti-corrosion oil.
Refer to GI-4, "
Components" for symbols not described on the above.
JPDID0386GB
Stamp collapsible spacer replacement
No stamp Not required
“0” or “0” on the far right of stamp Required
“01” or “1” on the far ri ght of stamp Not required
PDIA1001E
Revision: 2010 May2011 QX56

FRONT OIL SEALDLN-157
< REMOVAL AND INSTALLATION > [FRONT FINAL DRIVE: R180A]
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CAUTION:
Make a stamping after replacing front oil seal.
 After replacing front oil seal, make a stamping on t he stamping point in accordance with the table below in
order to identify replacement frequency.
CAUTION:
Make a stamping from left to right.
1. Make a judgement if a collapsible spacer replace is required.
2. Drain gear oil. Refer to DLN-155, "
Draining".
3. Remove the drive shafts from the front final drive assembly. Refer to FAX-22, "
Removal and Installation".
4. Remove the front propeller shaft from the front final drive assembly. Refer to DLN-129, "
Removal and
Installation".
5. Measure the total preload torque using preload gauge (A) [SST: ST3127S000 (J-25765-A)].
NOTE:
Record the total preload torque measurement.
6. 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.
7. Remove the drive pinion lock nut using flange wrench (commer- cial service tool).
Stamp before stamping Stamping on the far right Stamping
No stamp 00
“0”
(Front oil seal was replaced once.) 101
“01”
(Collapsible spacer and front oil seal were replaced last time.) 0010
“0” is on the far right.
(Only front oil seal was replaced last time.) 1...01
“1” is on the far right.
(Collapsible spacer and front oil seal were replaced last time.) 0 ...010
PDIA1002E
PDIA0799J
PDIA1004E
Revision: 2010 May2011 QX56

FRONT OIL SEALDLN-159
< REMOVAL AND INSTALLATION > [FRONT FINAL DRIVE: R180A]
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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 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 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 dial indicator onto the companion flange face (inner side of the propeller shaft mounting bolt holes).
6. Rotate the companion flange to check for runout.
7. Fit a test indicator to the inner side of the companion flange (socket diameter).
8. Rotate the companion flange to check for runout.
9. If the runout value is outside the repair limit, follow the procedure below to adjust.
a. Check for runout while changing the phase between companion flange and drive pinion gear by 90 ° step,
and search for the position where the runout is the minimum.
b. If the runout value is still outside of the limit after the phase has been changed, possible causes are be an
assembly malfunction of drive pinion and pinion bear ing and malfunction of pinion bearing. Check for
these items and repair if necessary.
c. If the runout value is still outsi de of the limit after the check and repair, replace companion flange.
10. Install front propeller shaft. Refer to DLN-129, "
Removal and Installation".
11. Install drive shaft. Refer to FAX-22, "
Removal and Installation".
12. Refill gear oil to the final drive and check oil level. Refer to DLN-155, "
Refilling".
13. Check the final drive for oil leakage. Refer to DLN-155, "
Inspection".
Total preload torque: A value
that add 0.1 – 0.4 N·m
(0.01 – 0.04 kg-m, 1 – 3 in-lb) to
the measured value when re-
moving.
PDIA1003E
Companion flange runout : Refer to DLN-185, "Com-
panion Flange Runout".
Companion flange runout : Refer to DLN-185, "
Com-
panion Flange Runout".
JSDIA0116ZZ
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

DIFFERENTIAL ASSEMBLYDLN-167
< UNIT DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: R180A]
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DIFFERENTIAL ASSEMBLY
Exploded ViewINFOID:0000000006222391
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.
: Apply multi-purpose grease.
JPDID0390GB
Revision: 2010 May2011 QX56

DLN-168
< UNIT DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: R180A]
DIFFERENTIAL ASSEMBLY
Disassembly
INFOID:0000000006222392
1. Remove bushing with drift (commercial service tool).
2. Remove differential side shaft assembly. Refer to DLN-165, "
Disassembly".
3. Remove side oil seal (left side) from gear carrier with a suitable tool.
4. For proper reinstallation, paint matching marks on one side of the side bearing cap and gear carrier.
CAUTION:
 For matching marks, use paint. Never damage side bear-ing cap and gear carrier.
 Bearing caps are manufactured as integral molding. Use the matching marks to them in their original positions.
5. Remove the side bearing caps.
6. Lift the differential case assembly out of the gear carrier with sliding hammer (commercial service tool).
7. Remove the differential case assembly with the side bearing outer race and side bearing adjusting washer.
CAUTION:
 Keep side bearing outer races together with side bearing
inner races. Do not mix them up.
 Keep side bearing adjusting washers together with side
bearings.
: 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.
SDIA1795E
PDIA0701E
PDIA0547E
SPD919
Revision: 2010 May2011 QX56

DIFFERENTIAL ASSEMBLYDLN-169
< UNIT DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: R180A]
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8. Remove housing spacer.
9. Remove side bearing inner race with the puller (A) and base (B).
CAUTION:
 To prevent damage to the side bearing and drive gear,place copper plates between these parts and vise.
 It is necessary to remove si de bearing inner race except
when it is replaced.
10. For proper reinstallation, paint matching marks on the differential case and drive gear.
CAUTION:
For matching marks, use paint. Never damage differential
case and drive gear.
11. Remove the drive mounting gear bolts.
12. Tap the drive gear off the differential case using suitable tool. CAUTION:
Tap evenly all around to keep drive gear from bending.
13. Perform inspection after disassembly. Refer to DLN-174,
"Inspection".
AssemblyINFOID:0000000006222393
1. Apply thread locking sealant into the threaded holes of the drive
gear and install the new drive gear bolts.
 Use Genuine High Strength Thread Locking Sealant or equiv-
alent. Refer to GI-22, "
Recommended Chemical Products and
Sealants".
CAUTION:
Clean degrees drive gear back and threaded holes suffi-
ciently.
2. Install the drive gear to differential case assembly. CAUTION:
Align the matching marks of differential case assembly and
drive gear
3. Tighten the drive gear mounting bolts with the following procedure. CAUTION:
Apply anti-corrosion oi l to the thread and seat of mounting bolts.
a. Tighten the bolts in a crisscross fashion to the specified torque.
b. Tighten the bolts additionally at the specified angle.
CAUTION:
Check the tightening angle us ing the angle wrench (A)
[SST: KV10112100 (BT-8653-A)]. Never make judgment by
visual inspection.
A: Puller [SST: ST33051001 (J-22888-20)]
B: Base [SST: ST33061000 (J-8107-2)]
PDIA0827E
PDIA0496E
SDIA2594E
Drive gear mounting
bolts tightening torque : 58.8 Nm (6.0 kg-m, 43 ft-lb)
Drive gear mounting
bolts tightening angle : 34 to 39 degree
AWBIA0722ZZ
Revision: 2010 May2011 QX56

DLN-176
< UNIT DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: R180A]
DRIVE PINION
DRIVE PINION
Exploded ViewINFOID:0000000006222396
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.
: Apply multi-purpose grease.
JPDID0390GB
Revision: 2010 May2011 QX56