2008 INFINITI QX56 oil

DLN-226
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
4. Install the selected drive pinion height adjusting washer to the
drive pinion. Press the drive pinion rear bearing inner race to it
using Tool.
CAUTION:
Do not reuse drive pinion rear bearing inner race.
5. Install the collapsible spacer to the drive pinion. CAUTION:
Do not reuse collapsible spacer.
6. Apply differential gear oil to the drive pinion rear bearing, and install the drive pinion assembly to the gear carrier.
7. Apply differential gear oil to the drive pinion front bearing, and install the drive pinion front bearing inner race to the drive pinion
assembly.
CAUTION:
Do not reuse drive pinion front bearing inner race.
8. Apply multi-purpose grease to the lips of the new front oil seal. Then drive the new front oil seal in evenly using Tools.
CAUTION:
• Do not reuse front oil seal.
• Do not incline the new front oil seal when installing.
• Apply multi-purpose grease to the lips of the new front oilseal.
9. Install the companion flange to the drive pinion while aligning the matching marks. Tap the companion flange until fully seated
using suitable tool.Tool number : C-4040
SDIA2253E
PDIA0708E
Tool number A: ST35271000 ( — )
B: KV40104810 ( — )
PDIA0717E
SDIA2266E
Revision: March 2010 2008 QX56

FRONT FINAL DRIVEDLN-227
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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10. Apply anti-corrosive oil to the threads of the drive pinion and the seating surface of the new drive pinion lock nut. Then adjust the
drive pinion lock nut tightening torque using suitable tool (A),
and check the drive pinion bearing preload torque using suitable
tool (B).
CAUTION:
• Do not reuse drive pinion lock nut.
• Apply anti-corrosive oil to th e threads of the drive pinion
and the seating surface of the new drive pinion lock nut.
• Adjust the drive pinion lock nut tightening torque to the
lower limit first. Do not exceed the drive pinion lock nut
specified torque. Refer to " DLN-214, "
Disassembly and
Assembly"
• If the drive pinion bearing preload torque exceeds the
specified value, replace collapsible spacer and tighten it
again to adjust. Do not loo sen drive pinion lock nut to
adjust the drive pinion bearing 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.
11. Check companion flange runout. Refer to DLN-231, "
Inspection and Adjustment".
12. Install the differential case assembly. Refer to DLN-214, "
Disassembly and Assembly".
Differential Assembly
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.
2. Install the side gears and side gear thrust washers into the dif- ferential case.
3. Install the pinion mate thrust washers to the two pinion mate gears. Then install the pinion mate gears with the pinion mate
thrust washers by aligning them in diagonally opposite positions
and rotating them into the differential case.Drive pinion bearing preload torque:
2.3 - 3.4 N·m (24 - 34 kg-cm, 21 - 30 in-lb)
WDIA0382E
SDIA0193J
SDIA2025E
Revision: March 2010 2008 QX56

FRONT FINAL DRIVEDLN-229
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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10. Install side bearing adjusters into gear carrier.
11. Apply differential gear oil to the side bearings, and install the dif- ferential case assembly with the side bearing outer races into
the gear carrier.
CAUTION:
Do not reuse side bearing ou ter race when replacing side
bearing inner race (replace as a set).
12. Install the side bearing caps with the matching marks aligned. NOTE:
Do not tighten at this step. This allows further tightening of side
bearing adjusters.
13. Tighten each side bearing adjuster alternately turning drive gear.
14. Check and adjust tooth contact, backlash, drive gear runout and total preload torque. Refer to DLN-231,
"Inspection and Adjustment".
Recheck above items.
• After adjusting tooth contact and backlash secure side bearing adjuster with screws and tighten side bearing cap bolt to the
specified torque. Refer to DLN-214, "
Disassembly and Assem-
bly".
15. Apply multi-purpose grease to the lips of the new side oil seal. Then drive the new side oil seal in evenly to
the gear carrier using suitable tool.
CAUTION:
• Do not reuse side oil seal.
• Do not incline the new side oil seal when installing.
• Apply multi-purpose grease to the lips of the new side oil seal.
SPD527
PDIA0700E
SDIA2265E
SDIA2263E
Revision: March 2010 2008 QX56

DLN-230
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
16. Install the extension tube with a new O-ring.
CAUTION:
• Do not reuse O-ring.
• If the extension tube is being replaced, install a new axleshaft bearing.
17. Apply 3 mm (0.12 in) bead of sealant to the mating surface of the carrier cover as shown.
• Use Genuine Silicone RTV or equivalent. Refer to GI-15,
"Recommended Chemical Products and Sealants".
CAUTION:
Remove any old sealant adheri ng to the mating surfaces.
Also remove any moisture, oil, or foreign material adhering
to the application and mating surfaces.
18. Install the carrier cover to the gear carrier. Tighten the bolts to the specified torque. Refer to DLN-214, "
Disassembly and
Assembly".
19. Install side shaft and side flange.
SDIA3205E
SDIA3204E
Revision: March 2010 2008 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)DLN-231
< SERVICE DATA AND SPECIFICATIONS (SDS) [FRONT FINAL DRIVE: M205]
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000001604450
* Option
Inspection and AdjustmentINFOID:0000000001604451
DRIVE GEAR RUNOUT
Unit: mm (in)
SIDE GEAR CLEARANCE
Unit: mm (in)
PRELOAD TORQUE
(Gear ratio :2.937 type)
Unit: N·m (kg-m, in-lb)
PRELOAD TORQUE
(Gear ratio :3.357 type)
Unit: N·m (kg-m, in-lb)
BACKLASH
Applied model 4WD
VK56DE A/T
SE LE, SE*
Final drive model M205
Gear ratio 2.9373.357
Number of teeth (Drive gear/Drive pinion) 47/1647/14
Differential gear oil capacity (Approx.) 1.6 (3 3/8 US pt, 2 7/8 Imp pt)
Number of pinion gears 2
Drive pinion adjustment spacer type Collapsible
ItemLimit
Drive gear back face 0.08 (0.0031) or less
ItemStandard
Side gear back clearance (Clearance between side gear and dif-
ferential case for adjusting side gear backlash) 0.20 (0.0079) or less
(Each gear should rotate smoothly without excessive resistance during differential motion.)
Item Standard
Drive pinion bearing preload torque 2.3 - 3.4 (0.24 - 0.34, 21 - 30)
Total preload torque
(Total preload torque = drive pinion bearing preload torque + side
bearing preload torque). 3.09 - 4.87 (0.32 - 0.49, 28 - 43)
Item
Standard
Drive pinion bearing preload torque 2.3 - 3.4 (0.24 - 0.34, 21 - 30)
Total preload torque
(Total preload torque = drive pinion bearing preload torque + side
bearing preload torque). 2.98 - 4.76 (0.31 - 0.48, 27 - 42)
Revision: March 2010
2008 QX56

DLN-234
< PRECAUTION >[REAR FINAL DRIVE: R230]
PRECAUTIONS
5. When the repair work is completed, return the ignition switch to the
″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of a ll control units using CONSULT-III.
Precaution for Servicing Rear Final DriveINFOID:0000000001604452
• Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic
operations.
• Check for the correct installation status prior to re moval or disassembly. When matching marks are required,
be certain they do not interfere with the function of the parts they are applied to.
• Overhaul should be done in a clean work area, a dust proof area is recommended.
• Before disassembly, completely remove sand and mud from the exterior of the unit, preventing them from
entering into the unit during disassembly or assembly.
• Always use shop paper for cleaning the inside of components.
• Avoid using cotton gloves or a shop cloth to prevent the entering of lint.
• Check appearance of the disassembled parts for dam age, deformation, and abnormal wear. Replace them
with new ones if necessary.
• Gaskets, seals and O-rings should be replaced any time the unit is disassembled.
• Clean and flush the parts sufficiently and blow them dry.
• Be careful not to damage sliding surfaces and mating surfaces.
• When applying sealant, remove the old sealant from the mating surface; then remove any moisture, oil, and
foreign materials from the application and mating surfaces.
• In principle, tighten nuts or bolts gradually in severa l steps working diagonally from inside to outside. If a
tightening sequence is specified, observe it.
• During assembly, observe the specified tightening torque.
• Add new differential gear oil, petroleum jelly, or multi-purpose grease, as specified.
Revision: March 2010 2008 QX56

PREPARATIONDLN-235
< PREPARATION > [REAR FINAL DRIVE: R230]
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000004921753
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
KV40104000
(—)
Flange wrench Removing and installing drive pinion lock nut
a: 85 mm (3.35 in) dia.
b: 65 mm (2.56 in) dia.
ST33081000
(—)
Adapter Installing differential carrier side bearings
a: 43 mm (1.69 in) dia.
b: 33.5 mm (1.319 in) dia.
ST15310000
(—)
Oil seal drift Installing front oil seal
a: 96 mm (3.78 in) dia.
b: 84 mm (3.31 in) dia.
ST30621000
(—)
Drift Installing drive pinion front and rear bearing
races
a: 79 mm (3.11 in) dia.
b: 59 mm (2.32 in) dia.
ST30022000
(—)
Drift Installing drive pinion bearing
a: 110 mm (4.33 in) dia.
b: 46 mm (1.81 in) dia.
ST35325000
(—)
Drift bar Installing drive pinion front and rear bearing
races
NT659
NT431
ZZA0908D
NT073
ZZA0920D
ZZA1140D
Revision: March 2010
2008 QX56

DLN-236
< PREPARATION >[REAR FINAL DRIVE: R230]
PREPARATION
KV381054S0
(J-34286)
Puller Removing front oil seal
ST30720000
(J-25405)
Drift • Installing front oil seal
• Installing drive pinion rear bearing outer
race
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
ST36230000
(J-25840-A)
Sliding hammer Removing side flange
KV40104100
(—)
Attachment Removing side flange
KV38100200
(J-26233)
Drift Installing side oil seal
a: 65 mm (2.56 in) dia.
b: 49 mm (1.93 in) dia.
KV38107900
(J-39352)
Protector Installing side flange
KV38100800
(J-25604-01)
Attachment Securing unit assembly
a: 541 mm (21.30 in)
b: 200 mm (7.87 in)
Tool number
(Kent-Moore No.)
Tool name
Description
ZZA0601D
ZZA0811D
ZZA0803D
ZZA0804D
ZZA1143D
S-NT129
SDIA0267E
Revision: March 2010
2008 QX56