Oil INFINITI QX56 2010 Factory Service Manual

DLN-230
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
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 Tool
(B).
CAUTION:
• Do not reuse drive pinion lock nut.
• Apply anti-corrosive oil to the threads of the drive pinionand 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-217, "
Disassembly and
Assembly".
• If the drive pinion bearin g preload torque exceeds the
specified value, replace collap sible spacer and tighten it
again to adjust. Do not loosen drive pinion lock nut to
adjust the drive pinion bearing preload torque.
• After adjustment, rotate drive pinion back and fo rth 2 to 3 times to check for unusual noise, rota-
tion malfunction, and other malfunctions.
11. Check companion flange runout.
12. Install the differential case 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.Tool number B: ST3127S000 (J-25765-A)
Drive pinion bearing preload torque
: Refer to DLN-234, "
Inspection and Adjust-
ment"
WDIA0382E
SDIA0193J
SDIA2025E
Revision: April 20092010 QX56

DLN-232
< DISASSEMBLY AND ASSEMBLY >[FRONT FINAL DRIVE: M205]
FRONT FINAL DRIVE
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.
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-217, "
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: April 20092010 QX56

FRONT FINAL DRIVEDLN-233
< DISASSEMBLY AND ASSEMBLY > [FRONT FINAL DRIVE: M205]
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16. Install the extension tube with a new O-ring. CAUTION:
• Do not reuse O-ring.
• If the extension tube is be ing replaced, install a new axle
shaft 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, "
Removal and Installa-
tion".
19. Install side shaft and side flange.
SDIA3205E
SDIA3204E
Revision: April 20092010 QX56

DLN-234
< SERVICE DATA AND SPECIFICATIONS (SDS) [FRONT FINAL DRIVE: M205]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationINFOID:0000000005148923
Inspection and AdjustmentINFOID:0000000005148924
DRIVE GEAR RUNOUT
Unit: mm (in)
SIDE GEAR CLEARANCE
Unit: mm (in)
PRELOAD TORQUE
Unit: N·m (kg-m, in-lb)
BACKLASH
Unit: mm (in)
COMPANION FLANGE RUNOUT
Unit: mm (in)
SELECTIVE PARTS
Drive Pinion Height Adjusting Washer
Applied model4WD
VK56DE
A/T
Final drive model M205
Gear ratio 3.357
Number of teeth (Drive gear/Drive pinion) 47/14
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). 2.98 - 4.76 (0.31 - 0.48, 27 - 42)
Item
Standard
Drive gear to drive pinion backlash 0.12 - 0.20 (0.0050 - 0.0078)
ItemLimit
Companion flange face 0.10 (0.0039) or less
Companion flange inner side 0.13 (0.0051) or less
Revision: April 20092010 QX56

PRECAUTIONSDLN-237
< PRECAUTION > [REAR FINAL DRIVE: R230]
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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 al l control units using CONSULT-III.
Precaution for Servicing Rear Final DriveINFOID:0000000005148925
• Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic
operations.
• Check for the correct installation status prior to removal 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 fr om 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 damage, 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 several 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 jell y, or multi-purpose grease, as specified.
Revision: April 20092010 QX56

DLN-238
< PREPARATION >[REAR FINAL DRIVE: R230]
PREPARATION
PREPARATION
PREPARATION
Special Service ToolINFOID:0000000005148926
The actual shapes of Kent-Moore tool
s may differ from those of special service tools illustrated here.
Tool number
(Kent-Moore No.)
Tool name Description
HT72400000
(—)
Slide hammer Removing differential case assembly
K V 1 0 1111 0 0
(J-37228)
Seal cutter Removing carrier cover
KV10112100
(BT-8653-A)
Angle wrench Tightening bolts for drive gear
KV38100200
(J-26233)
Drift Installing side oil seal
a: 65 mm (2.56 in) dia.
b: 49 mm (1.93 in) dia.
KV38100800
(J-25604-01)
Attachment Securing unit assembly
a: 541 mm (21.30 in)
b: 200 mm (7.87 in)
KV381054S0
(J-34286)
Puller Removing front oil seal
S-NT125
S-NT046
NT014
ZZA1143D
SDIA0267E
ZZA0601D
Revision: April 20092010 QX56

PREPARATIONDLN-239
< PREPARATION > [REAR FINAL DRIVE: R230]
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KV38107900
(J-39352)
Protector Installing side flange
KV40104100
(—)
Attachment Removing side flange
ST15310000
(—)
Oil seal drift Installing front oil seal
a: 96 mm (3.78 in) dia.
b: 84 mm (3.31 in) dia.
ST30022000
(—)
Drift Installing drive pinion bearing
a: 110 mm (4.33 in) dia.
b: 46 mm (1.81 in) dia.
ST30031000
(J-22912-01)
Puller Removing drive pinion rear bearing inner race
ST30621000
(—)
Drift Installing drive pinion front and rear bearing
races
a: 79 mm (3.11 in) dia.
b: 59 mm (2.32 in) dia.
Tool number
(Kent-Moore No.)
Tool name
Description
S-NT129
ZZA0804D
ZZA0908D
ZZA0920D
ZZA0700D
NT073
Revision: April 20092010 QX56

DLN-242
< SYMPTOM DIAGNOSIS >[REAR FINAL DRIVE: R230]
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000005148928
Use the chart below to help you find the cause of the sy mptom. If necessary, repair or replace these parts.
×: ApplicableReference page
DLN-253, "
Disassembly and Assembly
"
DLN-253, "
Disassembly and Assembly
"
DLN-253, "
Disassembly and Assembly
"
DLN-270, "
Inspection and Adjustment
"
DLN-270, "
Inspection and Adjustment
"
MA-13, "
Fluids and Lubricants
"
DLN-194, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
RSU-5, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
WT-43, "
NVH Troubleshooting Chart
"
RAX-5, "
NVH Troubleshooting Chart
"
BR-6, "
NVH Troubleshooting Chart
"
ST-12, "
NVH Troubleshooting Chart
"
Possible cause and SUSPECTED PARTS
Gear tooth rough
Gear contact improper
Tooth surfaces worn
Backlash incorrect
Companion flange excessive runout
Gear oil improper
PROPELLER SHAFT
REAR AXLE
REAR SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
BRAKES
STEERING
Symptom
Noise××××××× ××××××
Revision: April 20092010 QX56

DLN-244
< ON-VEHICLE MAINTENANCE >[REAR FINAL DRIVE: R230]
DIFFERENTIAL GEAR OIL
ON-VEHICLE MAINTENANCE
DIFFERENTIAL GEAR OIL
Changing Rear Differential Gear OilINFOID:0000000005148930
DRAINING
1. Stop the engine.
2. Remove the drain plug and gasket from the rear final drive
assembly to drain the differential gear oil.
3. Install the drain plug with a new gasket to the rear final drive assembly. Tighten to the specified torque. Refer to DLN-253,
"Disassembly and Assembly".
CAUTION:
Do not reuse gasket.
FILLING
1. Remove the filler plug and gasket from the rear final drive assembly.
2. Fill the rear final drive assembly with new differential gear oil until the level reaches the specified level near the filler plug hole.
3. Install the filler plug with a new gasket on it to the rear final drive assembly. Tighten to the specified torque. Refer to DLN-253,
"Disassembly and Assembly".
CAUTION:
Do not reuse gasket.
Checking Rear Differential Gear OilINFOID:0000000005148931
OIL LEAKAGE AND OIL LEVEL
1. Make sure that differential gear oil is not leaki ng from the rear final drive assembly or around it.
2. Check the differential gear oil level from the filler plug hole as shown.
CAUTION:
Do not start engine while checki ng differential gear oil level.
3. Install the filler plug with a new gasket on it to the rear final drive assembly. Tighten to the specified torque. Refer to DLN-253,
"Disassembly and Assembly".
CAUTION:
Do not reuse gasket.
LLIA0068E
Differential gear oil
grade and capacity : Refer to MA-13, "Fluids and
Lubricants".
LLIA0068E
LLIA0068E
Revision: April 20092010 QX56

FRONT OIL SEALDLN-245
< ON-VEHICLE REPAIR > [REAR FINAL DRIVE: R230]
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ON-VEHICLE REPAIR
FRONT OIL SEAL
Removal and InstallationINFOID:0000000005148932
REMOVAL
1. Remove the drive shafts from the rear final drive assembly. Refer to RAX-10, "Removal and Installation".
2. Remove the side flanges and side oil seals. Refer to DLN-247, "
Removal and Installation".
3. Remove the rear propeller shaft. Refer to DLN-196, "
Removal and Installation".
4. Measure the total preload torque. Refer to DLN-253, "
Disassembly and Assembly".
NOTE:
Record the total preload torque measurement.
5. Remove the drive pinion lock nut using suitable tool.
6. Put matching marks on the companion flange and drive pinion using paint. CAUTION:
Use paint to make the matching marks. Do not da mage the companion flange or drive pinion.
7. Remove the companion flange using suitable tool.
8. Remove the front oil seal using Tool.
INSTALLATION
SDIA1142E
SDIA1054E
Tool number : KV381054S0 (J-34286)
SDIA0485E
Revision: April 20092010 QX56