INFINITI QX56 2009 Factory Service Manual

PREPARATIONDLN-125
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Commercial Service ToolINFOID:0000000004193521
KV31103300
(—)
Drift  Removing press flange snap ring
 Installing press flange snap ring
 Installing carrier bearing
a: 76.3 mm (3.004 in) dia.
b: 130 mm (5.12 in)
KV38100300
(J-25523)
Drift  Removing mainshaft rear bearing
a: 54 mm (2.13 in) dia.
b: 46 mm (1.81 in) dia.
c: 32 mm (1.26 in) dia.
ST15310000
(J-25640-B)
Drift  Installing mainshaft rear bearing
a: 96 mm (3.78 in) dia.
b: 84 mm (3.31 in) dia.
KV40100621
(J-25273)
Drift  Installing front drive shaft front bearing
 Installing front drive shaft rear bearing
a: 76 mm (2.99 in) dia.
b: 69 mm (2.72 in) dia.
ST30032000
(J-26010-01)
Base  Installing front drive shaft front bearing
 Installing front drive shaft rear bearing
a: 38 mm (1.50 in) dia.
b: 80 mm (3.15 in) dia.
ST33220000
(—)
Drift  Installing needle bearing
a: 37 mm (1.46 in) dia.
b: 31 mm (1.22 in) dia.
c: 22 mm (0.87 in) dia.
Tool number
(Kent-Moore No.)
Tool name
Description
NT668
ZZA1046D
ZZA0908D
NT086
NT660
ZZA1046D
Revision: December 20092009 QX56

DLN-126
< PREPARATION >[ATX14B]
PREPARATION
Tool name
Description
Puller  Removing companion flange
Pin punch  Removing retainer pin
 Installing retainer pin
a: 6 mm (0.24 in) dia.
Power tool  Removing transfer case assembly
NT077
NT410
PBIC0190E
Revision: December 20092009 QX56

TRANSFER OIL FILTERDLN-127
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ON-VEHICLE MAINTENANCE
TRANSFER OIL FILTER
Removal and InstallationINFOID:0000000004193522
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: December 20092009 QX56

DLN-128
< ON-VEHICLE MAINTENANCE >[ATX14B]
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-127, "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-129, "Inspection"
.
6. Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to DLN-129, "Inspection"
.
WDIA0285E
SDIA2136E
Revision: December 20092009 QX56

TRANSFER FLUIDDLN-129
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TRANSFER FLUID
ReplacementINFOID:0000000004193523
CAUTION:
If using the vehicle for towing, the transfer fluid must be replaced as specified. Refer to MA-8, "Intro-
duction of Periodic Maintenance".
DRAINING
1. Stop engine.
2. Remove the drain plug and gasket and drain the fluid.
3. Install the drain plug with a new gasket to the transfer. Tighten to
the specified torque. Refer to DLN-142, "Disassembly and
Assembly".
CAUTION:
Do not reuse gasket.
FILLING
1. Remove the filler plug and gasket.
2. Fill the transfer with new fluid until the fluid level reaches the specified limit near the filler plug hole.
CAUTION:
Carefully fill fluid. (Fil l up for approx. 3 minutes.)
3. Leave the vehicle for 3 minutes, and check fluid level again.
4. Install the filler plug with a new gasket to the transfer. Tighten to the specified torque. Refer to DLN-142, "Disassembly and
Assembly".
CAUTION:
Do not reuse gasket.
InspectionINFOID:0000000004193524
CAUTION:
If using the vehicle for towing, the transfer fluid must be replaced as specified. Refer to MA-8, "Intro-
duction of Periodic Maintenance".
FLUID LEAKAGE AND FLUID LEVEL
1. Make sure that fluid is not leaking from the transfer assembly or around it.
2. Check fluid level from the filler plug hole as shown. CAUTION:
Do not start engine while checking fluid level.
3. Install the filler plug with a new gasket to the transfer. Tighten to the specified torque. Refer to DLN-142, "Disassembly and
Assembly".
CAUTION:
Do not reuse gasket.
SDIA3208E
Fluid grade and capacity : Refer to MA-12, "Fluids and
Lubricants".
SDIA3209E
SDIA3209E
Revision: December 20092009 QX56

DLN-130
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TRANSFER CONTROL UNIT
ON-VEHICLE REPAIR
TRANSFER CONTROL UNIT
Removal and InstallationINFOID:0000000004193525
REMOVAL
1. Set transfer state as 2WD when 4WD shift switch is
at 2WD, or as AUTO when 4WD shift switch is at
AUTO.
CAUTION:
When removing transfer co ntrol unit, transfer state must be at 2WD or AUTO.
2. Turn the ignition switch OFF and disconnect negative battery terminal.
3. Remove the lower instrument panel RH. Refer to IP-17, "Exploded View"
.
4. Disconnect the two transfer control unit connectors.
5. Remove the transfer control unit bolts.
6. Remove the transfer control unit.
INSTALLATION
Installation is in the reverse order of removal.
 When installing the transfer control unit, tighten bolts to the specified torque.
CAUTION:
Do not connect harness connector to transfer control unit when 4WD shift switch is at 4LO.
 After the installation, check perform self-diagnosis. Refer to DLN-6, "Work Flow"
. If NG, adjust position
between transfer assembly and transfer control unit. Refer to DLN-121, "Precaution for Transfer Assembly
and Transfer Control Unit Replacement".
BDIA0014E
Transfer control unit bolts : 3.4 N·m (0.35 kg-m, 30 in-lb)
Revision: December 20092009 QX56

FRONT OIL SEALDLN-131
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FRONT OIL SEAL
Removal and InstallationINFOID:0000000005874979
REMOVAL
1. Partially drain the transfer fluid. Refer to DLN-129, "Replacement".
2. Remove the front propeller shaft. Refer to DLN-186, "Removal and Installation"
.
3. Remove the companion flange self-lock nut using suitable 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
SDIA2657E
SDIA2658E
WDIA0193E
Tool number : KV381054S0 (J-34286)
LDIA0144E
Revision: December 20092009 QX56

DLN-132
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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 suitable tool. Refer to DLN-142, "Disassembly and
Assembly".
CAUTION:
Do not reuse self-lock nut.
4. Install the front propeller shaft. Refer to DLN-186, "Removal and
Installation".
5. Refill the transfer with fluid and check for fluid leakage and fluid level. Refer to DLN-129, "Inspection"
.
Tool number : KV38100500 ( — )
SDIA2662E
SDIA2658E
LDIA0147E
Revision: December 20092009 QX56

REAR OIL SEALDLN-133
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REAR OIL SEAL
Removal and InstallationINFOID:0000000004193527
REMOVAL
1. Partially drain the transfer fluid. Refer to DLN-129, "Replacement".
2. Remove the rear propeller shaft. Refer to DLN-196, "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 therear 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 (1). Position the new dust cover as shown.
CAUTION:
 Do not reuse dust cover.
 Position the projection in the position shown.
 Rear case assembly (2)
 Protrusions (A)
WDIA0127E
Tool number : KV381054S0 (J-34286)
LDIA0139E
Tool number : ST30720000 (J-25405)
LDIA0140E
AWDIA0550GB
Revision: December 20092009 QX56

DLN-134
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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-196, "Removal and
Installation".
5. Refill the transfer with fluid and check for fluid leakage and fluid level. Refer to DLN-129, "Replacement"
.
Tool number : KV40105310 ( — )PDIA0116E
Revision: December 20092009 QX56