INFINITI QX56 2011 Factory Service Manual

FRONT OIL SEALDLN-109
< REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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FRONT OIL SEAL
Exploded ViewINFOID:0000000006222329
Removal and InstallationINFOID:0000000006222330
REMOVAL
1. Remove the drain plug to drain the transfer fluid. Refer to DLN-106, "Draining".
2. Remove the front propeller shaft. Refer to DLN-129, "
Removal and Installation".
3. Remove the plug.
4. Remove the O-ring from the plug.
5. Remove the snap ring.
6. Remove the front shaft flange, using a plastic hammer.
7. Remove the dust shield from the front shaft flange, using puller and replacer.
8. Remove front oil seal from front case. CAUTION:
Never damage the front case.
INSTALLATION
1. Plug 2. O-ring 3. Snap ring
4. Transfer assembly 5. Front oil seal 6. Dust shield
7. Front shaft flange
: Vehicle front
: Apply transfer fluid. Refer to MA-10, "
Fluids and Lubricants".
Refer to GI-4, "
Components" for symbols not described above.
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A : Puller (commercial service tool)
B : Replacer (commercial service tool)
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Revision: 2010 May2011 QX56

DLN-110
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
FRONT OIL SEAL
1. Install front oil seal with a drift (A) (commercial service tool)
within the dimension (L) shown as follows.
CAUTION:
 Never reuse front oil seal.
 Apply transfer fluid onto circumference of oil seal.
2. Install the dust shield to the front shaft flange.
3. Install the front shaft flange.
4. Install the snap ring. CAUTION:
Never reuse the snap ring.
5. Install the O-ring to plug. CAUTION:
 Never reuse the O-ring.
 Never damage the O-ring.
6. Tighten the plug to specified torque.
7. Install front propeller shaft. Refer to DLN-129, "
Removal and Installation".
8. Fill with new transfer fluid, check fluid level and for fluid leakage. Refer to DLN-106, "
Inspection".
L : 5.3 – 5.7 mm
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Revision: 2010 May2011 QX56

REAR OIL SEALDLN-111
< REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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REAR OIL SEAL
Exploded ViewINFOID:0000000006222331
Removal and InstallationINFOID:0000000006222332
REMOVAL
1. Remove the rear propeller shaft. Refer to DLN-144, "Removal and Installation".
2. Put matching marks (A) on the end of the main shaft and the rear companion flange.
CAUTION:
For matching mark, using paint. Never damage main shaft.
3. Remove the snap ring.
4. Remove the adjusting shim.
5. Remove the rear companion flange, using a plastic hammer.
6. Remove the dust shield from rear companion flange, using the drift, puller and replacer.
7. Remove the o-ring from rear companion flange.
8. Remove the rear oil seal from rear case. CAUTION:
Never damage rear case and main shaft.
INSTALLATION
1. Snap ring 2. Adjusting shim 3. O-ring
4. Rear companion flange 5. Dust shield 6. Rear oil seal
7. Transfer assembly
: Vehicle front
: Apply transfer fluid. Refer to MA-10, "
Fluids and Lubricants".
Refer to GI-4, "
Components" for symbols not described above.
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A : Drift [SST: ST30701000 (J-25742-2)]
B : Puller (commercial service tool)
C : Replacer (commercial service tool)
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Revision: 2010 May2011 QX56

DLN-112
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
REAR OIL SEAL
1. Install rear oil seal, with a drift (A) [SST: KV40104710 ( —
] within the dimension (L) show as follows.
CAUTION:
 Never reuse front oil seal.
 Apply transfer fluid onto circumference of oil seal.
2. Install the dust shield to the rear companion flange.
3. Install the rear companion flange to main shaft. CAUTION:
 Align the matching marks (A) of main shaft and rear com-panion flange.
 Install bolt (A) (M12 ×1.75 mm) to main shaft, then install
the rear companion flange by hammering while pulling the
bolt.
4. Install the O-ring (3) to gap between rear companion flange (1) and main shaft (2).
CAUTION:
 Never reuse the O-ring.
 Never damage the O-ring.
5. Select adjusting shim. Refer to DLN-112, "
Adjustment".
6. Install adjusting shim.
7. Install the snap ring.
8. Install the rear propeller shaft. Refer to DLN-144, "
Removal and
Installation".
9. Check fluid level and for fluid leakage. Refer to DLN-106,
"Inspection".
AdjustmentINFOID:0000000006222333
ADJUSTING SHIM
1. Remove the snap ring.
2. Remove the adjusting shim.
3. Remove the O-ring.L : 2.8 – 3.2
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Revision: 2010 May2011 QX56

REAR OIL SEALDLN-113
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4. Install the thinnest adjusting shim.
5. Install the snap ring to main shaft.
6. Install the bolt (A) (M12 ×1.75 mm) to main shaft, then hummer
the rear companion flange while pulling the bolt.
7. Fit a dial indicator onto the end of main shaft.
8. Check the clearance between rear companion flange and main shaft during pushing the bolt (A) at direction.
9. Use the formula below to calculate adjusting shim thickness.
CAUTION:
Adjusting shim thickness is in step of 0.1 mm. When a calculation result includes the second dec-
imal place, it must be rounded down.
10. Select the proper adjusting shim. For selecting adj usting shim, refer to the latest parts information.
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Shim selection equation:
T = T
0 + (C − 0.1)
T: Correct shim thickness
T
0: The thinnest shim thickness
C: Measured clearance between rear companion flange and main shaft
Example:
T = 2.1 + (0.34 − 0.1) = 2.34
T
0:2.1
C: 0.34
Caluculated value... T = 2.34 mm
Used shim... T = 2.3 mm
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Revision: 2010 May2011 QX56

DLN-114
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
TRANSFER CONTROL ACTUATOR
TRANSFER CONTROL ACTUATOR
Exploded ViewINFOID:0000000006222334
Removal and InstallationINFOID:0000000006222335
REMOVAL
CAUTION:
If DTC about transfer control actuator is
detected, perform inspection after removal.
1. Turn the ignition switch OFF.
2. Disconnect negative battery terminal. CAUTION:
Wait for 5 seconds after turn ing ignition switch OFF.
3. Disconnect the transfer control actuator connector.
4. Remove the bolts and detach the transfer control actuator.
5. Perform inspection after removal. Refer to DLN-114, "
Inspection".
INSTALLATION
Note the following, and installing the reverse order of removal.
 Never damage oil seal of transfer motor.
 If transfer control actuator has been replaced, perform writing the unit parameter. Refer to DLN-48, "
Work
Procedure"
 Perform inspection after installation. Refer to DLN-114, "Inspection"
InspectionINFOID:0000000006222336
INSPECTION AFTER REMOVAL
1. Check the oil seal assembled transfer control act uator for wear, crack and damage. Replace if there is
malfunction.
2. Check the transfer assembly as follows.
1. Transfer assembly 2. Transfer control actuator
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
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Revision: 2010 May2011 QX56

TRANSFER CONTROL ACTUATORDLN-115
< REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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a. Install the spline socket (A) [SST: KV10119400 ( — )] to transfer assembly in the figure.
b. When turn the shaft in (B) direction, check returning to (C) direc- tion by spring power.
CAUTION:
The maximum turning force shall be 30 N·m (3.1 kg-m, 22 ft-
lb).
c. When turn the shaft in (C) direction, check locking the shaft.
INSPECTION AFTER INSTALLATION
After driving, check the surface fitting transfer cont rol actuator to transfer assembly for fluid leakage.
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Revision: 2010 May2011 QX56

DLN-116
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
TRANSFER HI-LO POSITION SENSOR
TRANSFER HI-LO POSITION SENSOR
Exploded ViewINFOID:0000000006222337
Removal and InstallationINFOID:0000000006222338
REMOVAL
1. Turn the ignition switch OFF.
2. Disconnect negative battery terminal.
CAUTION:
Wait for 5 seconds after turn ing ignition switch OFF.
3. Remove exhaust front tube (LH). Refer to EX-5, "
Removal and Installation".
4. Support transfer assembly and transmission assembly with a jack.
5. Remove front suspension rear cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
6. Remove rear engine mounting cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
7. Remove heat insulator of exhaust front tube (LH).
8. Lower jack to the position where the tr ansfer Hi-Lo position sensor can be removed.
9. Disconnect the transfer Hi-Lo position sensor connector.
10. Remove the transfer Hi-Lo position sensor.
11. Perform inspection after removal. Refer to DLN-116, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Never damage O-ring of transfer Hi-Lo position sensor.
 Perform inspection after installation. Refer to DLN-116, "
Inspection".
InspectionINFOID:0000000006222339
INSPECTION AFTER REMOVAL
Check the O-ring assembled transfer Hi-Lo position sens or for wear, crack and damage. Replace the transfer
Hi-Lo position sensor if there is malfunction.
INSPECTION AFTER INSTALLATION
After driving, check the surface fitting transfer Hi-Lo position sensor to transfer assembly for fluid leakage.
1. Transfer Hi-Lo position sensor 2. Transfer assembly
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDIE0282GB
Revision: 2010 May2011 QX56

TRANSFER ROTARY POSITION SENSORDLN-117
< REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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TRANSFER ROTARY POSITION SENSOR
Exploded ViewINFOID:0000000006222340
Removal and InstallationINFOID:0000000006222341
REMOVAL
1. Turn the ignition switch OFF.
2. Disconnect negative battery terminal. CAUTION:
Wait for 5 seconds after turning ignition switch OFF.
3. Support transfer assembly and transmission assembly with a jack.
4. Remove front suspension rear cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
5. Remove rear engine mounting cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
6. Disconnect the transfer rotary position sensor connector.
7. Remove the transfer rotary position sensor.
8. Perform inspection after removal. Refer to DLN-118, "
Inspection".
INSTALLATION
1. Remove the transfer control actuator. Refer to DLN-114, "Exploded View"
2. Shift transfer assembly into AUTO as follows.
a. Install the spline socket (A) [SST: KV10119400 ( — )] to
transfer assembly in the figure.
b. Turn the shaft (B) direction and remove the spline socket at a position returning to (C) direction by spring power.
CAUTION:
The maximum turning force shall be 30 N·m (3.1 kg-m, 22 ft-
lb).
1. Transfer assembly 2. Transfer rotary position sensor
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
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Revision: 2010 May2011 QX56

DLN-118
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
TRANSFER ROTARY
POSITION SENSOR
c. Check that the surface fitting transfer rotary position sensor to
transfer assembly is in the figure.
3. Install the transfer rotary position sensor. CAUTION:
 Check that part (A) of transfer rotary position sensor is inthe position (B).
 Never damage O-ring of transfer rotary position sensor.
4. Connect transfer rotary position sensor connector.
5. Install the transfer control actuator. Refer to DLN-114, "
Exploded
View".
6. Perform inspection after installation. Refer to DLN-118, "
Inspec-
tion".
7. When replacing the transfer rotary position sensor, perform
learning of transfer rotary position sensor. Refer to DLN-46, "
Work Procedure".
InspectionINFOID:0000000006222342
INSPECTION AFTER REMOVAL
Check the O-ring assembled transfer rotary position s ensor for wear, crack and damage. Replace the transfer
rotary position sensor if there is malfunction.
INSPECTION AFTER INSTALLATION
After driving, check the surface fitt ing transfer rotary position sensor to transfer assembly for fluid leakage.
: Vehicle front
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Revision: 2010 May2011 QX56