INFINITI QX56 2010 Factory Service Manual

TRANSFER FLUIDDLN-129
< ON-VEHICLE MAINTENANCE > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
TRANSFER FLUID
ReplacementINFOID:0000000005148885
CAUTION:
If using the vehicle for towing, the transfer fluid must be replaced as specified. Refer to MA-9, "
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:0000000005148886
CAUTION:
If using the vehicle for towing, the transfer fluid must be replaced as specified. Refer to MA-9, "
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-13, "Fluids and
Lubricants".
SDIA3209E
SDIA3209E
Revision: April 20092010 QX56

DLN-130
< ON-VEHICLE REPAIR >[ATX14B]
TRANSFER CONTROL UNIT
ON-VEHICLE REPAIR
TRANSFER CONTROL UNIT
Removal and InstallationINFOID:0000000005148887
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: April 20092010 QX56

FRONT OIL SEALDLN-131
< ON-VEHICLE REPAIR > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
FRONT OIL SEAL
Removal and InstallationINFOID:0000000005148888
REMOVAL
1. Partially drain the transfer fluid. Refer to DLN-129.
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: April 20092010 QX56

DLN-132
< ON-VEHICLE REPAIR >[ATX14B]
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: April 20092010 QX56

REAR OIL SEALDLN-133
< ON-VEHICLE REPAIR > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
REAR OIL SEAL
Removal and InstallationINFOID:0000000005148889
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: April 20092010 QX56

DLN-134
< ON-VEHICLE REPAIR >[ATX14B]
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: April 20092010 QX56

SIDE OIL SEALDLN-135
< ON-VEHICLE REPAIR > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
SIDE OIL SEAL
Removal and InstallationINFOID:0000000005148890
REMOVAL
1. Remove the front propeller shaft. Refer to DLN-186, "Removal and Installation".
2. Remove the companion flange. Refer to DLN-142, "
Disassembly and Assembly".
3. Remove the transfer control device from the transfer assembly. Refer to DLN-136, "
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-136, "
Removal and Installation".
3. Install the companion flange. Refer to DLN-142, "
Disassembly
and Assembly".
4. Install the front propeller shaft. Refer to DLN-186, "
Removal and Installation".
SDIA2666E
Tool number : ST22360002 (J-25679-01)
SDIA2665E
Revision: April 20092010 QX56

DLN-136
< ON-VEHICLE REPAIR >[ATX14B]
TRANSFER CONTROL DEVICE
TRANSFER CONTROL DEVICE
Removal and InstallationINFOID:0000000005380646
REMOVAL
CAUTION:
Change vehicle state to AUTO, and then
remove and install transfer control device.
1. Remove front propeller shaft. Refer to DLN-186, "
Removal and Installation".
2. Disconnect the transfer control device connector.
3. Remove transfer control lever.
4. Disconnect vacuum line.
5. Remove transfer control device.
INSTALLATION
CAUTION:
Check 4WD shift indicator after installation. Refer to DLN-121, "
Precaution for Transfer Assembly and
Transfer Control Unit Replacement".
Installation is in the reverse order of removal.
1. Shift lever 2. Actuator
SDIA2654E
Revision: April 20092010 QX56

AIR BREATHER HOSEDLN-137
< ON-VEHICLE REPAIR > [ATX14B]
C
EF
G H
I
J
K L
M A
B
DLN
N
O P
AIR BREATHER HOSE
Removal and InstallationINFOID:0000000005148892
REMOVAL
INSTALLATION
CAUTION:
Make sure there are no pinched or restricted areas on each air breather hose caused by folding or
bending when installing it.
1. Install each air breather hose into the breather tube (4). Set each air breather hose with paint mark facing upward.
• A/T breather hose (1)
• Transfer breather hose (2)
• Actuator/transfer motor breather hose (3)
• Paint marks (A)
2. Install actuator/transfer motor air breather hose (1) and transfer air breather hose (2) on clip (A) with the paint mark (B) facing
upward.
• :Front
AWDIA0010ZZ
1. Breather tube 2. Clip A3. Clip B
4. Clip C 5. Clip D6. Actuator
7. Air breather hose clamp 8. Clip E 9. Transfer motor
10. Breather tube (transfer) Vehicle front
ALDIA0110ZZ
ALDIA0111ZZ
Revision: April 20092010 QX56

DLN-138
< ON-VEHICLE REPAIR >[ATX14B]
AIR BREATHER HOSE
3. Install clip (B) on actuator/tr
ansfer motor air breather hose (1)
and transfer air breather hose (2) with the paint mark (A)
matched.
• :Front
4. Install actuator/transfer motor air breather hose (1) and transfer air breather hose (2) on clip (B) and clip (C) with the paint mark
(A) and (D) facing upward.
• :Front
5. Install the actuator air breather hose into the actuator (case con- nector) until the hose end reaches the base of the tube. Set
actuator air breather hose with paint mark facing leftward.
6. Install clip (B) on transfer motor air breather hose (2) and trans- fer air breather hose (1) with the paint mark (A) matched.
• :Front
7. Install the transfer air breather hose into the breather tube (transfer, metal connector) until the hose end reaches the base
of the tube. Set transfer air breather hose with paint mark facing
upwards.
AWDIA0011ZZ
AWDIA0012ZZ
SDIA3226E
AWDIA0013ZZ
SDIA3196E
Revision: April 20092010 QX56