oil INFINITI QX56 2008 Factory Workshop Manual

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGDLN-117
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NOISE, VIBRATION AND HARSHN ESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000001737203
Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspec-
tion. If necessary, repair or replace these parts.
Reference page
MA-12, "
Fluids and Lubricants
"
DLN-140, "
Disassembly and Assembly
"
DLN-140, "
Disassembly and Assembly
"
DLN-140, "
Disassembly and Assembly
"
DLN-140, "
Disassembly and Assembly
"
SUSPECTED PARTS
(Possible cause)
TRANSFER FLUID (Level low)
TRANSFER FLUID (Wrong)
TRANSFER FLUID (Level too high)
LIQUID GASKET (Damaged)
O-RING (Worn or damaged)
OIL SEAL (Worn or damaged)
SHIFT FORK (Worn or damaged)
GEAR (Worn or damaged)
BEARING (Worn or damaged)
Symptom Noise
1 2 3 3
Transfer fluid leakage 31222
Hard to shift or will not shift 1 1 2
Revision: March 2010 2008 QX56

PREPARATIONDLN-121
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000001604407
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 self-lock nut
• Installing self-lock nut
a: 85 mm (3.35 in)
b: 65 mm (2.56 in)
KV381054S0
(J-34286)
Puller • Removing front oil seal
• Removing rear oil seal
• Removing metal bushing
KV38100500
(—)
Drift • Installing front oil seal
a: 80 mm (3.15 in) dia.
b: 60 mm (2.36 in) dia.
ST30720000
(J-25405)
Drift • Installing rear oil seal
• Installing mainshaft front bearing and oil
seal
a: 77 mm (3.03 in) dia.
b: 55.5 mm (2.185 in) dia.
KV40105310
(—)
Drift • Installing dust cover
a: 89 mm (3.50 in) dia.
b: 80.7 mm (3.17 in) dia.
ST22360002
(J-25679-01)
Drift • Installing side oil seal
a: 23 mm (0.91 in) dia.
b: 32 mm (1.26 in) dia.
NT659
ZZA0601D
ZZA0811D
ZZA0811D
ZZA1003D
ZZA1091D
Revision: March 2010
2008 QX56

DLN-122
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PREPARATION
ST35300000
(—)
Drift• Removing sun gear assembly and planetary
carrier assembly
• Removing carrier bearing
• Installing metal bushing
a: 59 mm (2.32 in) dia.
b: 45 mm (1.77 in) dia.
ST33200000
(J-26082)
Drift • Removing mainshaft front bearing
• Installing sun gear assembly and planetary
carrier assembly
• Installing mainshaft front bearing and oil
seal
a: 74.5 mm (2.933 in) dia.
b: 62.5 mm (2.461 in) dia.
ST30031000
(—)
Puller • Removing carrier bearing
• Removing front drive shaft front bearing
• Removing front drive shaft rear bearing
a: 90 mm (3.54 in) dia.
b: 50 mm (1.97 in) dia.
ST33710000
(—)
Drift • Removing needle bearing
• Removing metal bushing
a: 24 mm (0.94 in) dia.
b: 89 mm (3.5 in)
c: 30 mm (1.18 in) dia.
ST35325000
(—)
Drift bar • Removing metal bushing
a: 215 mm (8.46 in)
b: 25 mm (0.98 in) dia.
c: M12
× 1.5P
ST33052000
(—)
Adapter • Removing front drive shaft front bearing
• Removing front drive shaft rear bearing
• Installing mainshaft
a: 28 mm (1.10 in) dia.
b: 22 mm (0.87 in) dia.
ST22452000
(J-34335)
Drift • Removing press flange snap ring
• Installing press flange snap ring
a: 45 mm (1.77 in) dia.
b: 36 mm (1.42 in) dia.
c: 400 mm (15.76 in) dia.
Tool number
(Kent-Moore No.)
Tool name
Description
NT073
NT661
NT411
ZZA1057D
NT663
NT431
NT117
Revision: March 2010
2008 QX56

TRANSFER OIL FILTERDLN-125
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ON-VEHICLE MAINTENANCE
TRANSFER OIL FILTER
Removal and InstallationINFOID:0000000001604409
REMOVAL
1. Remove the oil filter bolts and oil filter. CAUTION:
• Do not damage center case or oil filter.
• Loosen bolts and detach oil filter evenly.
2. Remove the O-rings (1) from the oil filter (2).
3. Remove the oil filter stud from the oil filter.
4. Remove the O-ring from the oil filter stud.
INSTALLATION
1. Apply ATF to the new O-ring, and install it on the oil filter stud. CAUTION:
Do not reuse O-ring.
2. Install the oil filter stud to the oil filter.
SMT875C
WDIA0285E
SDIA3180E
SDIA3180E
Revision: March 2010 2008 QX56

DLN-126
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TRANSFER OIL FILTER
3. Apply ATF to the two new O-rings (1), and install them on the oil
filter (2).
CAUTION:
Do not reuse O-rings.
4. Install the oil filter to the transfer assembly. Tighten the bolts to the specified torque. Refer to DLN-125, "
Removal and Installa-
tion".
CAUTION:
• Do not damage oil filter.
• Attach oil filter an d tighten bolts evenly.
5. Check the transfer fluid. Refer to DLN-127, "
Inspection".
6. Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to DLN-127, "
Inspection".
WDIA0285E
SDIA2136E
Revision: March 2010 2008 QX56

FRONT OIL SEALDLN-129
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FRONT OIL SEAL
Removal and InstallationINFOID:0000000001604413
REMOVAL
1. Partially drain the transfer fluid. Refer to DLN-127.
2. Remove the front propeller shaft. Refer to DLN-184, "
Removal and Installation".
3. Remove the companion flange self-lock nut using Tool.
4. Put a matching mark on top of the front drive shaft in line with the mark on the companion flange.
CAUTION:
Use paint to make the matching mark on the front drive
shaft. Do not damage the front drive shaft.
5. Remove the companion flange using suitable tool.
6. Remove the front oil seal from the front case using Tool. CAUTION:
Do not damage front case.
INSTALLATION
Tool number : KV40104000 ( — )
SDIA2657E
SDIA2658E
WDIA0193E
Tool number : KV381054S09 (J-34286)
LDIA0144E
Revision: March 2010 2008 QX56

DLN-130
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FRONT OIL SEAL
1. Install the new front oil seal until it is flush with the end face of
the front case using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply petroleum jelly to oil seal.
2. Align the matching mark of the front drive shaft with the match- ing mark of the companion flange, then install the companion
flange.
3. Install the new self-lock nut. Tighten to the specified torque using Tool. Refer to DLN-140, "
Disassembly and Assembly".
CAUTION:
Do not reuse self-lock nut.
4. Install the front propeller shaft. Refer to DLN-184, "
Removal and
Installation".
5. Refill the transfer with fluid and check for fluid leakage and fluid level. Refer to DLN-127, "
Replacement".
Tool number : KV38100500 ( — )
SDIA2662E
SDIA2658E
Tool number :KV40104000 ( — )
LDIA0147E
Revision: March 2010
2008 QX56

REAR OIL SEALDLN-131
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REAR OIL SEAL
Removal and InstallationINFOID:0000000001604414
REMOVAL
1. Partially drain the transfer fluid. Refer to DLN-127, "Replacement".
2. Remove the rear propeller shaft. Refer to DLN-194, "
Removal and Installation".
3. Remove the dust cover from the rear case. CAUTION:
Do not damage the rear case.
4. Remove the rear oil seal from the rear case using Tool. CAUTION:
Do not damage the rear case.
INSTALLATION
1. Install the new rear oil seal until it is flush with the end face of the
rear case using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply petroleum jelly to oil seal.
2. Apply petroleum jelly to the circumference of the new dust cover. Position the new dust cover using the identification mark as
shown.
CAUTION:
• Do not reuse dust cover.
• Position the identification mark at the position shown.
WDIA0127E
Tool number : KV381054S0 (J-34286)
LDIA0139E
Tool number : ST30720000 (J-25405)
LDIA0140E
SDIA3436E
Revision: March 2010 2008 QX56

DLN-132
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REAR OIL SEAL
3. Install the new dust cover to the rear case using Tool.
CAUTION:
• Do not reuse dust cover.
• Apply petroleum jelly to dust cover.
4. Install the rear propeller shaft. Refer to DLN-194, "
Removal and
Installation".
5. Refill the transfer with fluid and check for fluid leakage and fluid level. Refer to DLN-127, "
Replacement".
Tool number : KV40105310 ( — )PDIA0116E
Revision: March 2010
2008 QX56

SIDE OIL SEALDLN-133
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SIDE OIL SEAL
Removal and InstallationINFOID:0000000001604415
REMOVAL
1. Remove the front propeller shaft. Refer to DLN-184, "Removal and Installation".
2. Remove the companion flange. Refer to DLN-140, "
Disassembly and Assembly".
3. Remove the transfer control device from the transfer assembly. Refer to DLN-134, "
Removal and Installa-
tion".
4. Remove the side oil seal using suitable tool. CAUTION:
Do not damage shift cross.
INSTALLATION
1. Install the new side oil seal until it is flush with the end face ofcase using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply petroleum jelly to oil seal.
2. Install the transfer control device to the transfer assembly. Refer to DLN-134, "
Removal and Installation".
3. Install the companion flange. Refer to DLN-140, "
Disassembly
and Assembly".
4. Install the front propeller shaft. Refer to DLN-184, "
Removal and Installation".
SDIA2666E
Tool number : ST22360002 (J-25679-01)
SDIA2665E
Revision: March 2010 2008 QX56