service INFINITI QX56 2011 Factory Service Manual

SERVICE DATA AND SPECIFICATIONS (SDS)
DLN-185
< SERVICE DATA AND SPECIFICATIONS (SDS) [FRONT FINAL DRIVE: R180A]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationsINFOID:0000000006222401
Drive Gear RunoutINFOID:0000000006222402
Unit: mm (in)
Preload TorqueINFOID:0000000006222403
Unit: N·m (kg-m, in-lb)
BacklashINFOID:0000000006222404
Unit: mm (in)
Companion Flange RunoutINFOID:0000000006222405
Unit: mm (in)
Applied model 4WD
VK56VD A/T
Final drive model R180A
Gear ratio 2.937
Number of teeth (Drive gear/Drive pinion) 47/16
Oil capacity (Approx.) (US pt, lmp pt)0.75 (1-5/8, 1-3/8)
Number of pinion gears 4
Drive pinion adjustment spacer type Collapsible
Item Limit
Drive gear back face runout 0.05 (0.0020)
Item Standard
Pinion bearing (P
1) 1.08 – 1.66 (0.11 – 0.16, 10 – 14)
Side bearing (P
2) 0.59 – 1.08 (0.06 – 0.11, 6 – 9)
Side bearing to pinion bearing (Total preload)
(Total preload = P
1 + P2) 1.67 – 2.74 (0.17 – 0.27, 15 – 24)
Item Standard
Drive gear to drive pinion gear 0.10 – 0.15 (0.0039 – 0.0059)
Item Limit
Companion flange face 0.10 (0.004)
Inner side of the companion flange 0.10 (0.004)
Revision: 2010 May2011 QX56

DLN-186
< PRECAUTION >[REAR FINAL DRIVE: R230]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Service Notice or Precautions for Rear Final DriveINFOID:0000000006222406
 Check for the correct installation status prior to removal or disassembly. If matching marks are required, be
certain they never interfere with the function of the parts when applied.
 Overhaul should be done in a clean work area, it is preferable to work in dustproof area.
 Before disassembly, using steam or white gasoline, completely remove sand and mud from the exterior of
the unit, preventing them from entering into the unit during disassembly or assembly.
 Check appearance of the disassembled parts for dam age, deformation, and unusual wear. Replace them
with new ones, if necessary.
 Gaskets, seals and O-rings should be replaced any time when the unit is disassembled.
 In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If tight-
ening sequence is specified, observe it.
 Clean and flush the parts sufficiently and blow-dry them.
 Be careful not to damage sliding surfaces and mating surfaces.
 When applying sealant, remove the old sealant from t he mounting surface; then remove any moisture, oil,
and foreign materials from the application and mounting surfaces.
 Always use shop paper for cleaning the inside of components.
 Never use cotton gloves or shop rags to prevent entering of lint.
 During assembly, observe the specified tightening tor que, and apply new gear oil, petroleum jelly, or multi-
purpose grease as specified for each vehicle, if necessary.
Revision: 2010 May2011 QX56

PREPARATIONDLN-187
< PREPARATION > [REAR FINAL DRIVE: R230]
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000006222407
The actual shapes of Kent-Moore t ools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
KV40104100
(—)
Attachment Removing side flange
ST36230000
(J-25840-A)
Sliding hammer Removing side flange
ST3127S000
(J-25765-A)
Preload gauge Measuring pinion bearing preload and total
preload
KV381054S0
(J-34286)
Puller Removing front oil seal
ST15310000
(J-25640-B)
Drift
a: 96 mm (3.78 in) dia.
b: 84 mm (3.31 in) dia. Installing front oil seal
KV38108000
(—)
Protector Installing side flange
ZZA0804D
ZZA0803D
ZZA0806D
ZZA0601D
S-NT673
S-NT129
Revision: 2010 May2011 QX56

PREPARATIONDLN-189
< PREPARATION > [REAR FINAL DRIVE: R230]
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Commercial Service ToolINFOID:0000000006222408
—
(J-8129)
Spring gauge Measuring turning torque
KV38103300
(—)
Drift
a: 99 mm (3.90 in) dia. Installing drive pinion rear bearing outer race
ST30611000
(J-25742-1)
Drift bar Installing drive pinion front bearing outer race
ST30621000
(J-25742-5)
Drift
a: 79 mm (3.11 in) dia.
b: 59 mm (2.32 in) dia. Installing drive pinion front bearing outer race
ST30022000
(—)
Drift
a: 110 mm (4.33 in) dia.
b: 56 mm (2.20 in) dia.
c: 46 mm (1.81 in) dia. Installing pinion rear bearing inner race
Tool number
(Kent-Moore No.)
Tool name
Description
NT127
PDIA0933E
S-NT090
ZZA1000D
ZZA0978D
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

DRIVE PINIONDLN-217
< UNIT DISASSEMBLY AND ASSEMBLY > [REAR FINAL DRIVE: R230]
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DisassemblyINFOID:0000000006222426
1. Remove differential case assembly. Refer to DLN-204, "Disassembly".
2. Remove drive pinion lock nut with the flange wrench (commer- cial service tool).
3. 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 mark, use pain t. Never damage companion
flange and drive pinion.
NOTE:
The matching mark on the final drive companion flange indicates
the maximum vertical runout position.
When replacing companion flange, matching mark is not neces-
sary.
4. Remove companion flange using the suitable puller (commercial service tool).
5. Press drive pinion assembly out of gear carrier. CAUTION:
Never drop drive pinion assembly.
6. Remove front oil seal.
7. Remove side oil seal.
8. Remove pinion front bearing inner race.
9. Remove collapsible spacer.
: 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.
JSDIA0046ZZ
JSDIA0038ZZ
SDIA1132E
PDIA0760J
Revision: 2010 May2011 QX56

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 tool).
11. Tap pinion front/rear bearing outer races uniformly using a brass rod or equivalent to remove them.
CAUTION:
Never damage gear carrier.
12. Perform inspection after disassembly. Refer to DLN-220,
"Inspection".
AssemblyINFOID:0000000006222427
1. Install front bearing outer race and rear bearing outer race using
drifts.
CAUTION:
 At first, using a hammer, tap bearing outer race until itbecomes flat to gear carrier.
 Never reuse pinion front and rear bearing outer race.
2. Select drive pinion height adjusting washer. For selecting adjust- ing washer, refer to the latest parts information.
PDIA0801J
SDIA0817E
A : Drift [SST: KV38103300 ( — )]
B : Drift [SST: ST30611000 (J-25742-1)]
C : Drift bar [SST: ST30621000 (J-25742-5)]
PDIA0944E
Revision: 2010 May2011 QX56

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

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 SpecificationINFOID:0000000006222430
Drive Gear RunoutINFOID:0000000006222431
Unit: mm (in)
Side Gear ClearanceINFOID:0000000006222432
Unit: mm (in)
Preload TorqueINFOID:0000000006222433
BacklashINFOID:0000000006222434
Unit: mm (in)
Companion Flange RunoutINFOID:0000000006222435
Unit: mm (in)
Applied model 2WD 4WD
VK56VDA/T
Final drive model R230
Gear ratio 2.937
Number of teeth (Drive gear/Drive pinion) 47/16
Oil capacity (Approx.) (US pt, lmp pt)1.75 (3-3/4, 3-1/8)
Number of pinion gears 2
Drive pinion adjustment spacer type Collapsible
Item Runout limit
Drive gear back face 0.05 (0.0020) or less
Item Specification
Side gear back clearance
(Clearance limit between side gear and differential case for adjusting
side gear backlash) 0.20 (0.0079) or less
(Each gear should rotate smoothly without excessive resis-
tance during differential motion.)
Item Specification
Drive pinion bearing preload torque 1.76 − 2.65 N·m (0.18 − 0.27 kg −m, 16 − 23 in-lb)
Side bearing preload torque (reference value determined by drive
gear bolt pulling force) 0.29
− 1.47 N·m (0.03 − 0.14 kg −m, 3 − 13 in-lb)
Total preload torque
(Total preload torque = drive pinion bearing preload torque + Side
bearing preload torque) 2.06
− 4.12 N·m (0.21 − 0.42 kg −m, 19 − 36 in-lb)
Item Specification
Drive gear to drive pinion gear 0.13 − 0.18 (0.0051 − 0.0070)
Item Runout limit
Inner side of the companion flange 0.08 (0.0031) or less
Revision: 2010 May2011 QX56