2011 INFINITI QX56 Factory Service Manual

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Page 2017 of 5598

INFINITI QX56 2011 Factory Service Manual
DIFFERENTIAL ASSEMBLYDLN-215
< UNIT DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
C
EF
G H
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M A
B
DLN
N
O P
CAUTION:
Never change the total amount of wash ers as it changes the bearing p

Page 2018 of 5598

INFINITI QX56 2011 Factory Service Manual
DLN-216
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DRIVE PINION
DRIVE PINION
Exploded ViewINFOID:0000000006222425
1. Rear cover 2. Bearing cap 3. Side gear thrust washer
4. Side gear 5

Page 2019 of 5598

INFINITI QX56 2011 Factory Service Manual
DRIVE PINIONDLN-217
< UNIT DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
C
EF
G H
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M A
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DLN
N
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DisassemblyINFOID:0000000006222426
1. Remove differential case assembly. Refer to DLN-

Page 2020 of 5598

INFINITI QX56 2011 Factory Service Manual
DLN-218
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DRIVE PINION
10. Remove pinion rear bearing inner race and pinion height adjust-
ing washer with the replacer (A) (commercial service

Page 2021 of 5598

INFINITI QX56 2011 Factory Service Manual
DRIVE PINIONDLN-219
< UNIT DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
C
EF
G H
I
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M A
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DLN
N
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3. Install selected drive pinion height adjusting washer (2) to drive pinion. Press pin

Page 2022 of 5598

INFINITI QX56 2011 Factory Service Manual
DLN-220
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DRIVE PINION
10. Apply anti-corrosion oil to the thread and seat of drive pinion
lock nut, and temporarily tighten drive pinion lock

DLN-220
< UNIT DISASSEMBLY AND ASSEMBLY >[REAR FINAL DRIVE: R230]
DRIVE PINION
10. Apply anti-corrosion oil to the thread and seat of drive pinion
lock nut, and temporarily tighten drive pinion lock nut to drive
pinion, using flange wrench (c ommercial service tool).
CAUTION:
Never reuse drive pinion lock nut.
11. Adjust to the drive pinion lock nut tightening torque and pinion bearing preload torque, using preload gauge [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.
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-206, "
Assem-
bly".
CAUTION:
Never install rear cover at this timing.
13. Check and adjust drive gear runout, tooth contact, drive gear to drive pinion backlash, and companion flange runout. Refer to DLN-210, "
Adjustment" and DLN-220, "Adjustment".
Recheck above items. Readjust the above description, if necessary.
14. Check total preload torque. Refer to DLN-210, "
Adjustment".
15. Install rear cover. Refer to DLN-206, "
Assembly".
AdjustmentINFOID:0000000006222428
COMPANION FLANGE RUNOUT
1. Fit a test indicator to the inner side of the companion flange
(socket diameter).
2. Rotate companion flange to check for runout.
3. If the runout value is outside t he runout limit, follow the proce-
dure below to adjust.
a. Check for runout while changing the phase between companion flange and drive pinion 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 cause will be an
assembly malfunction of drive pinion and pinion bearing and malfunction of pinion bearing. Check for
these items and repair if necessary.
c. If the runout value is still outside of the limit after the check and repair, replace companion flange.
InspectionINFOID:0000000006222429
INSPECTION AFTER DISASSEMBLY
Drive Gear and Drive Pinion
Clean up the disassembled parts.
If the gear teeth never mesh or line-up correctly, det ermine the cause and adjust or replace as necessary.
Pinion bearing preload : Refer to
DLN-222, "
Pre-
load Torque".
JSDIA0047ZZ
Inner side of companion
flange runout: Refer to
DLN-222, "Com-
panion Flange Runout".
JPDID0399ZZ
Revision: 2010 May2011 QX56

Page 2023 of 5598

INFINITI QX56 2011 Factory Service Manual
DRIVE PINIONDLN-221
< UNIT DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
C
EF
G H
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K L
M A
B
DLN
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If the gears are worn, cracked, damaged, pitted or chi pped (by friction) noticeably,

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INFINITI QX56 2011 Factory Service Manual
DLN-222
< SERVICE DATA AND SPECIFICATIONS (SDS) [REAR FINAL DRIVE: R230]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General Spec

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