INFINITI QX56 2006 Factory Service Manual

TF-136
REAR OIL SEAL
Revision: November 20092006 QX56
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 PR-9, "
INSTALLATION" .
5. Refill the transfer with fluid and check fluid level. Refer to TF-11,
"FILLING" .
6. Check the transfer for fluid leakage. Refer to TF-11, "
FLUID
LEAKAGE AND FLUID LEVEL" .
Tool number : KV40105310 ( — )PDIA0116E

SIDE OIL SEALTF-137
CE F
G H
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K L
M A
B
TF
Revision: November 2009 2006 QX56
SIDE OIL SEALPFP:33142
Removal and InstallationEDS003BA
REMOVAL
1. Remove the front propeller shaft. Refer to PR-5, "REMOVAL" .
2. Remove the companion flange. Refer to TF-133, "
REMOVAL" .
3. Remove the transfer control device from the transfer assembly. Refer to TF-138, "
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 TF-138, "
Removal and Installation" .
3. Install the companion flange. Refer to TF-133, "
Removal and
Installation" .
4. Install the front propeller shaft. Refer to PR-5, "
INSTALLATION" .
SDIA2666E
Tool number : ST22360002 (J-25679-01)
SDIA2665E

TF-138
TRANSFER CONTROL DEVICE
Revision: November 20092006 QX56
TRANSFER CONTROL DEVICEPFP:33251
Removal and InstallationEDS003BB
CAUTION:

Change vehicle state to 2WD, and then remove and install transfer control device.

Check 4WD shift indicator after installation. Refer to TF-4, "Precautions for Transfer Assembly and
Transfer Control Unit Replacement" .
1. Shift lever2. Transfer control device
SDIA2654E

AIR BREATHER HOSETF-139
CE F
G H
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K L
M A
B
TF
Revision: November 2009 2006 QX56
AIR BREATHER HOSEPFP:31098
Removal and InstallationEDS003BC
CAUTION:

Make sure there are no pinched or restricted areas on each air breather hose caused by bending
or winding when installing it.

Install each air breather hose into the breather tube (metal
connector) until the hose end reaches the end of the curve
section. Set each air breather hose with paint mark facing
upward.

Install actuator/transfer motor air breather hose and trans-
fer air breather hose on clip A and clip B with the paint mark
facing upward.
1. Breather tube2. Clip A3. Clip B
4. Clip C 5. Clip D6. Clip E
7. Actuator 8. Air breather hose clamp9. Clip F
10. Transfer motor 11. Breather tube (transfer)
SDIA3339E
SDIA3341E
SDIA3342E

TF-140
AIR BREATHER HOSE
Revision: November 20092006 QX56

Install clip C on actuator/transfer motor air breather hose
and transfer air breather hose with the paint mark matched.

Install actuator/transfer motor air breather hose and trans-
fer air breather hose on clip D and clip E with the paint mark
facing upward.

Install the actuator air breather hose into the actuator (case
connector) until the hose end reaches the base of the tube.
Set actuator air breather hose with paint mark facing left-
ward.

Install clip F on transfer motor air breather hose and trans-
fer air breather hose with the paint mark matched.

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.
SDIA3343E
SDIA3344E
SDIA3226E
SDIA3345E
SDIA3196E

AIR BREATHER HOSETF-141
CE F
G H
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J
K L
M A
B
TF
Revision: November 2009 2006 QX56

Install the transfer motor air breather hose into the transfer
motor (case connector) until the hose end reaches the end
of the curved section. Set transfer motor air breather hose
with paint mark facing leftward.
SDIA3194E

TF-142
TRANSFER MOTOR
Revision: November 20092006 QX56
TRANSFER MOTORPFP:00000
Removal and InstallationEDS003BD
REMOVAL
1. Disconnect the transfer motor connector.
2. Remove the air breather hose from the transfer motor. Refer to
TF-139, "
Removal and Installation" .
3. Remove the transfer motor bolts.
4. Remove the transfer motor.
INSTALLATION
1. Apply ATF to the new O-ring and install it to the transfer motor.
CAUTION:
Do not reuse O-rings.
2. Fit the double-flat end of the transfer motor shaft into the slot of the sub-oil pump assembly. Then tighten to the specified torque.
Refer to TF-146, "
COMPONENTS" .
CAUTION:
Be sure to install connector bracket.
3. Install the air breather hose to the transfer motor. Refer to TF-
139, "Removal and Installation" .
4. Connect the transfer motor connector.
5. Check the transfer fluid. Refer to TF-11, "
FILLING" .
6. Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to TF-11,
"FLUID LEAKAGE AND FLUID LEVEL" .
SDIA2133E
SDIA2787E

TRANSFER OIL FILTERTF-143
CE F
G H
I
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K L
M A
B
TF
Revision: November 2009 2006 QX56
TRANSFER OIL FILTERPFP:00000
Removal and InstallationEDS003BE
REMOVAL
1. Remove the oil filter bolts and oil filter.
CAUTION:

Do not damage center case and 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

TF-144
TRANSFER OIL FILTER
Revision: November 20092006 QX56
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 TF-146, "
COMPONENTS" .
CAUTION:

Do not damage oil filter.

Attach oil filter and tighten bolts evenly.
5. Check the transfer fluid. Refer to TF-11, "
TRANSFER FLUID" .
6. Start the engine and let it run for one minute. Then stop the engine and recheck the transfer fluid. Refer to TF-11, "
TRANS-
FER FLUID" .
WDIA0285E
SDIA2136E

TRANSFER ASSEMBLYTF-145
CE F
G H
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K L
M A
B
TF
Revision: November 2009 2006 QX56
TRANSFER ASSEMBLYPFP:33100
Removal and InstallationEDS003BF
REMOVAL
1. Remove the drain plug and gasket. Drain the fluid. Refer to TF-11, "DRAINING" .
2. Remove the A/T undercover using power tool.
3. Remove the center exhaust tube and main muffler. Refer to EX-3, "
Removal and Installation" .
4. Remove the front and rear propeller shafts. Refer to PR-4, "
Removal and Installation" (front), PR-8,
"Removal and Installation" (rear).
CAUTION:
Do not damage spline, sleeve yoke and rear oil seal when removing rear propeller shaft.
NOTE:
Insert a plug into the rear oil seal after removing the rear propeller shaft.
5. Remove the A/T nuts from the A/T crossmember.
6. Position two suitable jacks under the A/T and transfer assembly.
7. Remove the crossmember. Refer to AT- 2 4 6 , "
COMPONENTS" .
WARNING:
Support A/T and transfer assembly using two suitable jacks while removing crossmember.
8. Disconnect the electrical connectors from the following:

AT P s w i t c h

Neutral 4LO switch

Wait detection switch

Transfer motor

Transfer control device

Transfer terminal cord assembly
9. Disconnect each air breather hose from the following. Refer to TF-139, "
Removal and Installation" .

Actuator

Breather tube (transfer)

Transfer motor (case connector)
10. Remove the transfer control device from the extension housing.
11. Remove the transfer to A/T and A/T to transfer bolts. WARNING:
Support transfer assembly with suitable jack while removing it.
12. Remove the transfer assembly.
INSTALLATION
Installation is in the reverse order of removal.

Tighten the bolts to specification.

After installation check the transfer fluid level and for fluid leak-
age. Refer to TF-11, "
TRANSFER FLUID" .

After filling, start the engine and let it run for one minute. Then
stop the engine and recheck the transfer fluid.Bolt length : 45 mm (1.77 in)
Transfer bolt torque : 36 N·m (3.7 kg-m, 27 ft-lb)
SDIA3181E