INFINITI QX56 2011 Factory Service Manual

TRANSFER LOCK POSITION SENSORDLN-119
< REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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TRANSFER LOCK PO SITION SENSOR
Exploded ViewINFOID:0000000006222343
Removal and InstallationINFOID:0000000006222344
REMOVAL
1. Turn the ignition switch OFF.
2. Disconnect negative battery terminal.
CAUTION:
Wait for 5 seconds after turning ignition OFF.
3. Support transfer assembly and transmission assembly with a jack.
4. Remove rear engine mounting cross member with a power tool. Refer to TM-208, "
4WD : Removal and
Installation".
5. Lower jack to the position where the tr ansfer lock position sensor can be removed.
6. Disconnect the transfer lock position sensor connector.
7. Remove the transfer lock position sensor.
8. Perform inspection after removal. Refer to DLN-119, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Never damage O-ring of transfer lock position sensor.
 Perform inspection after installation. Refer to DLN-119, "
Inspection".
 When replacing the transfer lock position sensor, perform learning of transfer lock position sensor. Refer to
DLN-44, "
Work Procedure".
InspectionINFOID:0000000006222345
INSPECTION AFTER REMOVAL
Check the O-ring assembled transfer lock position sensor for wear, crack and damage. Replace the transfer
lock position sensor if there is malfunction.
INSPECTION AFTER INSTALLATION
After driving, check the surface fitting transfer lock position sensor to transfer assembly for fluid leakage.
1. Transfer lock position sensor 2. Transfer assembly
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDIE0284GB
Revision: 2010 May2011 QX56

DLN-120
< REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
TRANSFER FLUID TEMPERATURE SENSOR
TRANSFER FLUID TEMPERATURE SENSOR
Exploded ViewINFOID:0000000006222346
Removal and InstallationINFOID:0000000006222347
REMOVAL
1. Drain transfer fluid. Refer to
DLN-106, "Draining".
2. Disconnect the transfer fluid temperature sensor connector.
3. Remove the transfer fluid temperature sensor.
4. Perform inspection after removal. Refer to DLN-120, "
Inspection".
INSTALLATION
Note the following, and install in the reverse order of removal.
 Perform inspection after installation. Refer to DLN-120, "
Inspection".
 After refilling new transfer fluid, perform learning of transfer fluid viscosity. Refer to DLN-47, "
Work Proce-
dure".
InspectionINFOID:0000000006222348
INSPECTION AFTER REMOVAL
Check the washer assembled transfer fluid temperat ure sensor for wear, crack and damage. Replace the
transfer fluid temperature sensor if there is malfunction.
INSPECTION AFTER INSTALLATION
After driving, check the surface fitt ing transfer fluid temperature sensor to transfer assembly for fluid leakage.
1. Transfer assembly 2. Transfer fluid temperature sensor
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDIE0285GB
Revision: 2010 May2011 QX56

TRANSFER ASSEMBLYDLN-121
< UNIT REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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UNIT REMOVAL AND INSTALLATION
TRANSFER ASSEMBLY
Exploded ViewINFOID:0000000006222349
Removal and InstallationINFOID:0000000006222350
REMOVAL
1. Remove rear propeller shaft. Refer to DLN-144, "Removal and Installation".
2. Remove front propeller shaft. Refer to DLN-129, "
Removal and Installation".
3. Disconnect transfer control actuator, transfer rotary position sensor, transfer lock position sensor, transfer
Hi-Lo position sensor and transfer fluid temperatur e sensor harness connectors and separate harnesses
from transfer assembly.
4. Remove transfer breather hose.
5. Remove exhaust front tube (LH) with a power tool. Refer to EX-5, "
Removal and Installation".
6. Remove exhaust front tube (RH) with a power tool. Refer to EX-5, "
Removal and Installation".
7. Remove main muffler with a power tool. Refer to EX-5, "
Removal and Installation".
8. Support transfer assembly and transmission assembly with a jack. CAUTION:
Secure transfer assembly and tr ansmission assembly to a jack.
9. Remove rear engine mounting member and engine mounting insulator with a power tool. Refer to EM-99,
"Removal and Installation".
10. Lower jack to the position where the top transfer mounting bolts can be removed.
11. Remove transfer mounting bolts and separate transfer from transmission. CAUTION:
Secure transfer assembly and tr ansmission assembly to a jack.
INSTALLATION
Note the following, and install in the reverse order of removal.
1. Bracket 2. Bracket 3. Transfer assembly
: Vehicle front
JPDIE0286GB
Revision: 2010 May2011 QX56

DLN-122
< UNIT REMOVAL AND INSTALLATION >[TRANSFER: ATX90A]
TRANSFER ASSEMBLY
 When installing the transfer to the
transmission, install the mount-
ing bolts following the standard below, tighten bolts to the specified
torque.
 When installing transfer breather hose, make sure t here are no pinched or restricted areas on the transfer
breather hose caused by bending or winding.
- Install the transfer breather hose (1) of transmission side with the
paint mark (A) facing upward and the mark (B) (: ) facing right
side.
- Install the transfer breather hose (1) of transfer side with the paint mark (A) facing upward, and insert breather hose to breather tube
(2) until dimension (B) shown as follows.
- Be sure to fix breather hose in (A) and (B) positions. Fix with the
paint mark facing upward in the (A) position.
 Check oil level and check for oil leakage after installation. Refer to DLN-106, "
Inspection".
 If replacing transfer assembly, perform writing unit parameter,
learning of fluid viscosity and initial calibration. Refer to DLN-42,
"Work Procedure".
Bolt symbol A B
Insertion direction Transfer to transmission Transmission to transfer
: Tightening the bolt with bracket
JPDIE0259ZZ
JPDIE0247ZZ
B: 20 mm (0.79 in)
JPDIE0251ZZ
JPDIE0248ZZ
Revision: 2010 May2011 QX56

INPUT OIL SEALDLN-123
< UNIT REMOVAL AND INSTALLATION > [TRANSFER: ATX90A]
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INPUT OIL SEAL
Exploded ViewINFOID:0000000006222351
Removal and InstallationINFOID:0000000006222352
REMOVAL
1. Remove transfer assembly from vehicle. Refer to DLN-121, "Exploded View".
2. Remove input oil seal from front case, using a suitable tool. CAUTION:
Never damage the front case and input.
INSTALLATION
Note the following, and install in the reverse order of removal.
 Install input oil seal, with a drift (A) [SST: KV40104710 ( — )] until it is flush with the end face of front case with the drift
CAUTION:
 Never reuse input oil seal.
 Apply transfer fluid onto circumference of oil seal.
1. Transfer assembly 2. Input oil seal
: Apply transfer fluid. Refer to MA-10, "
Fluids and Lubricants".
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDIE0287ZZ
JPDIE0185ZZ
Revision: 2010 May2011 QX56

DLN-124
< SERVICE DATA AND SPECIFICATIONS (SDS) [TRANSFER: ATX90A]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
General SpecificationsINFOID:0000000006222353
Applied model 4WD
V56VD A/T
Transfer model AT X 9 0 A
Fluid capacity (Approx.) (US pt, lmp pt)1.5 (3-1/8, 2-5/8)
Revision: 2010 May2011 QX56

PREPARATIONDLN-125
< PREPARATION > [FRONT PROPELLER SHAFT: 2F P15]
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PREPARATION
PREPARATION
Commercial Service ToolsINFOID:0000000006226729
Tool name Description
Power tool Loosening bolts and nuts
PBIC0190E
Revision: 2010 May2011 QX56

DLN-126
< SYMPTOM DIAGNOSIS >[FRONT PROPELLER SHAFT: 2F P15]
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING
SYMPTOM DIAGNOSIS
NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING
NVH Troubleshooting ChartINFOID:0000000006222354
Use the chart below to help you find the cause of the symptom. If necessa ry, repair or replace these parts.
×: ApplicableReference
DLN-127, "
Inspection
"—
—
—
—
DLN-127, "
Inspection
"
DLN-127, "
Inspection
"
NVH of FRONT FINAL DRI VE in this section.
NVH of REAR FINAL DRI VE in this section.
NVH in FAX, RAX, FSU and RSU section.
NVH in WT section.
NVH in WT section.
NVH in FAX and RAX section.
NVH in BR section.
NVH in ST section.
Possible cause an d SUSPECTED PARTS
Uneven rotating torque
Center bearing improper installation
Excessive center bearing axial end play
Center bearing mounting (insulator) cracks, damage or deterioration
Excessive joint angle
Rotation imbalance
Excessive runout
DIFFERENTIAL
AXLE AND SUSPENSION
TIRE
ROAD WHEEL
DRIVE SHAFT
BRAKE
STEERING
Symptom Noise
××××××××××××××
Shake × × ××××××
Vibration ××××××× ×× × ×
Revision: 2010 May2011 QX56

FRONT PROPELLER SHAFTDLN-127
< PERIODIC MAINTENANCE > [FRONT PROPELLER SHAFT: 2F P15]
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PERIODIC MAINTENANCE
FRONT PROPELLER SHAFT
InspectionINFOID:0000000006222355
NOISE
Check the propeller shaft tube surface for dents or cr acks. If damaged, replace propeller shaft assembly.
VIBRATION
If vibration is present at high speed, inspect propeller shaft runout
first.
1. With a dial indicator, measure propeller shaft runout at runout measuring points by rotating final drive companion flange with
hands.
2. If runout still exceeds specifications, separate propeller shaft at final drive companion flange; then rotate companion flange 90, 180, 270 degrees and install propeller
shaft.
3. Check runout again. If runout still exceeds spec ifications, replace propeller shaft assembly.
4. Check the vibration by driving vehicle.
RUNOUT MEASURING POINT
Propeller shaft runout measuring point (Point “ ”).
: Vehicle front
Propeller shaft runout : Refer to DLN-133, "Pro-
peller Shaft Runout".LDIA0160E
: Vehicle front
Dimension
A : 80 – 100 mm (3.15 – 3.94 in)
B : 100 – 120 mm (3.94 – 4.72 in)
C : 254.5 mm (10.02 in)
JPDID0321ZZ
Revision: 2010 May2011 QX56

DLN-128
< REMOVAL AND INSTALLATION >[FRONT PROPELLER SHAFT: 2F P15]
FRONT PROPELLER SHAFT
REMOVAL AND INSTALLATION
FRONT PROPELLER SHAFT
Exploded ViewINFOID:0000000006222356
REMOVAL
DISASSEMBLY
1. Propeller shaft assembly
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDID0323GB
1. Flange yoke 2. Snap ring*3. Bearing*
4. Journal*5. Propeller shaft
*: Replace “2”, “3” and “4” as a set.
: Vehicle front
Refer to GI-4, "
Components" for symbols not described above.
JPDID0325ZZ
Revision: 2010 May2011 QX56