2010 INFINITI QX56 REAR PROPELLER SHAFT

DLN-3
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PRECAUTIONS .............................................. ..120
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
120
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ..
120
Precaution for Transfer Assembly and Transfer
Control Unit Replacement .....................................
121
Precaution .............................................................121
Service Notice .......................................................122
PREPARATION .........................................123
PREPARATION .............................................. ..123
Special Service Tool ........................................... ..123
Commercial Service Tool ......................................125
ON-VEHICLE MAINTENANCE ..................127
TRANSFER OIL FILTER ................................ ..127
Removal and Installation .......................................127
TRANSFER FLUID ......................................... ..129
Replacement ....................................................... ..129
Inspection ..............................................................129
ON-VEHICLE REPAIR ...............................130
TRANSFER CONTROL UNIT ........................ ..130
Removal and Installation .......................................130
FRONT OIL SEAL ............................................131
Removal and Installation .......................................131
REAR OIL SEAL ..............................................133
Removal and Installation .......................................133
SIDE OIL SEAL .............................................. ..135
Removal and Installation .......................................135
TRANSFER CONTROL DEVICE ................... ..136
Removal and Installation .......................................136
AIR BREATHER HOSE .................................. ..137
Removal and Installation .......................................137
TRANSFER MOTOR ...................................... ..140
Removal and Installation .......................................140
REMOVAL AND INSTALLA TION .............141
TRANSFER ASSEMBLY ............................... ..141
Removal and Installation .......................................141
DISASSEMBLY AND ASSEMBLY ........... .142
TRANSFER ASSEMBLY ............................... ..142
Disassembly and Assembly ................................ ..142
SERVICE DATA AND SPECIFICATIONS
(SDS) ......... ................................. ................
179
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
179
General Specification .......................................... ..179
Inspection and Adjustment ....................................179
PROPELLER SHAFT: 2F1310
PRECAUTION ...... ......................................
181
PRECAUTIONS ...............................................181
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
181
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
181
PREPARATION .........................................183
PREPARATION ...............................................183
Commercial Service Tool .................................... ..183
SYMPTOM DIAGNOSIS ............................184
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING .........................
184
NVH Troubleshooting Chart ................................ ..184
ON-VEHICLE REPAIR ...............................185
PROPELLER SHAFT ......................................185
On-Vehicle Service .............................................. ..185
REMOVAL AND INSTALLATION .............186
PROPELLER SHAFT ......................................186
Removal and Installation ..................................... ..186
DISASSEMBLY AND ASSEMBLY ............188
PROPELLER SHAFT ......................................188
Disassembly and Assembly ................................. ..188
SERVICE DATA AND SPECIFICATIONS
(SDS) ............... .......................................... .
190
SERVICE DATA AND SPECIFICATIONS
(SDS) ...............................................................
190
General Specification .......................................... ..190
Snap Ring ..............................................................190
PROPELLER SHAFT: 2S1410
PRECAUTION ...... ......................................
191
PRECAUTIONS ...............................................191
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ..
191
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
191
PREPARATION .........................................193
PREPARATION ...............................................193
Revision: April 20092010 QX56

DLN-4
Commercial Service Tool ......................................193
SYMPTOM DIAGNOSIS ............................194
NOISE, VIBRATION, AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... .
194
NVH Troubleshooting Chart ................................ ..194
ON-VEHICLE REPAIR ...............................195
PROPELLER SHAFT ..................................... .195
On-Vehicle Service .............................................. ..195
REMOVAL AND INSTALLATION ..............196
PROPELLER SHAFT ..................................... .196
Removal and Installation ..................................... ..196
DISASSEMBLY AND ASSEMBLY ............199
PROPELLER SHAFT ..................................... .199
Disassembly and Assembly ................................. ..199
SERVICE DATA AND SPECIFICATIONS
(SDS) ........................................................ ..
201
SERVICE DATA AND SPECIFICATIONS
(SDS) ............................................................... .
201
General Specification .......................................... ..201
Snap Ring ..............................................................201
FRONT FINAL DRIVE: M205
PRECAUTION .............. ..............................
203
PRECAUTIONS .............................................. .203
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. ..
203
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .................................
203
Precaution for Servicing Front Final Drive .............204
PREPARATION ..........................................205
PREPARATION .............................................. .205
Special Service Tool ............................................ ..205
Commercial Service Tool ......................................207
SYMPTOM DIAGNOSIS ............................208
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... .
208
NVH Troubleshooting Chart ................................ ..208
ON-VEHICLE MAINTENANCE ..................209
DIFFERENTIAL GEAR OIL ............................ .209
Changing Front Differential Gear Oil .....................209
Checking Front Differential Gear Oil .................... ..209
ON-VEHICLE REPAIR ...............................210
SIDE OIL SEAL .............................................. ..210
Removal and Installation .......................................210
FRONT OIL SEAL ............................................211
Removal and Installation .......................................211
CARRIER COVER .......................................... ..214
Removal and Installation .......................................214
REMOVAL AND INSTALLA TION .............215
FRONT FINAL DRIVE .................................... ..215
Removal and Installation .......................................215
DISASSEMBLY AND ASSEMBLY ...........217
FRONT FINAL DRIVE .................................... ..217
Disassembly and Assembly ................................. .217
SERVICE DATA AND SPECIFICATIONS
(SDS) ........ .................................................
234
SERVICE DATA AND SPECIFICATIONS
(SDS) .............................................................. ..
234
General Specification ........................................... .234
Inspection and Adjustment ....................................234
REAR FINAL DRIVE: R230
PRECAUTION ............... ............................
236
PRECAUTIONS .............................................. ..236
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
236
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ................................
236
Precaution for Servicing Rear Final Drive .............237
PREPARATION .........................................238
PREPARATION .............................................. ..238
Special Service Tool ............................................ .238
Commercial Service Tool ......................................240
SYMPTOM DIAGNOSIS ...........................242
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING ......................... ..
242
NVH Troubleshooting Chart ..................................242
DESCRIPTION ................................................ ..243
Cross-Sectional View ........................................... .243
ON-VEHICLE MAINTENANCE .................244
DIFFERENTIAL GEAR OIL ..............................244
Changing Rear Differential Gear Oil .................... .244
Checking Rear Differential Gear Oil ......................244
ON-VEHICLE REPAIR ..............................245
FRONT OIL SEAL ............................................245
Revision: April 20092010 QX56

DLN-14
< FUNCTION DIAGNOSIS >[ATX14B]
4WD SYSTEM
• Displays 4LO condition while engine is running. 4LO indicator lamp flashes if transfer gear does not shift
completely under 2WD, AUTO, 4H ⇔4LO. (When 4WD warning lamp is turned on, 4LO indicator lamp is
turned off.)
• Turns ON for approximately 1 second when ignition switch is turned ON, for purpose of lamp check.
4WD WARNING LAMP
Turns on or flashes when there is a malfunction in 4WD system.
Also turns on when ignition switch is turned ON, for purpose of lamp che\
ck. Turns OFF approximately 1 sec-
ond after the engine starts if system is normal.
4WD Warning Lamp Indication
ATP WARNING LAMP
When the A/T selector lever is in P position, the vehicle may move if the transfer case is in neutral. ATP warn-
ing lamp is turned on to indicate this condition to the driver.
LINE PRESSURE SWITCH
• With the transfer system design, control of the oil pressure provides the transmission of drive torque to the
front wheels. The main pressure to control the oil pressure is referred to as the line pressure.
• The line pressure switch determines whether or not adequate line pressure has built up under different oper- ating conditions.
• The line pressure switch closes when line pressure is produced.
• The line pressure switch senses line pressure abnormalities and turns the 4WD warning lamp ON.
CLUTCH PRESSURE SWITCH
• The clutch pressure switch determines whether or not adequate clutch pressure has built up under different
operating conditions.
• The clutch pressure switch closes when clutch pressure is produced.
• The clutch pressure switch senses clutch pressure abnormalities and turns the 4WD warning lamp ON.
WAIT DETECTION SWITCH
• The wait detection switch operates when there is circulating torque produced in the propeller shaft (L→H) or
when there is a phase difference between 2-4 sleeve and clutch drum (H →L). After the release of the circu-
lating torque, the wait detection switch helps provi de the 4WD lock gear (clutch drum) shifts. A difference
may occur between the operation of the 4WD shift swit ch and actual drive mode. At this point, the wait
detection switch senses an actual drive mode.
• The wait detection switch operates as follows.
- 4WD lock gear (clutch drum) locked: ON
- 4WD lock gear (clutch drum) released: OFF
• The wait detection switch senses an actual drive mode and the 4WD shift indicator lamp indicates the vehi-
cle drive mode.
ATP SWITCH
ATP switch detects if transfer case is in neutral by the position of the L-H shift fork.
NOTE:
Transfer case may be in neutral when shifting between 4H-4LO.
NEUTRAL-4LO SWITCH
The neutral-4LO switch detects that transfer gear is in neutral or 4LO (or shifting from neutral to 4LO) condi-
tion by L-H shift fork position.
Condition 4WD warning lamp
System normal OFF
Lamp check Turns ON when ignition switch is turned ON.
Turns OFF after engine start.
4WD system malfunction ON
During self-diagnosis Flashes malfunction mode.
Large difference in diameter of front/
rear tires Flashes slow (1 flash / 2 seconds)
(Continues to flash until the ignition switch is turned OFF)
High fluid temperature in transfer case Flashes rapidly (2 flashes / 1 second)
(Continues to flash until fluid temperature returns to normal)
Revision: April 20092010 QX56

REAR OIL SEALDLN-133
< ON-VEHICLE REPAIR > [ATX14B]
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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

TRANSFER ASSEMBLYDLN-141
< REMOVAL AND INSTALLATION > [ATX14B]
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REMOVAL AND INSTALLATION
TRANSFER ASSEMBLY
Removal and InstallationINFOID:0000000005148894
REMOVAL
1. Set transfer state as 2WD when 4WD shift switch is at 2WD.
2. Remove the undercovers using power tool.
3. Drain the transfer fluid. Refer to TM-150, "
Changing the A/T Fluid (ATF)".
4. Remove the center exhaust tube and main muffler. Refer to EX-6, "
Removal and Installation".
5. Remove the front and rear propeller shafts. Refer to DLN-186, "
Removal and Installation" (front), DLN-
196, "Removal and Installation" (rear).
CAUTION:
Do not damage spline, sleeve yoke and rear oi l seal when removing rear propeller shaft.
NOTE:
Insert a plug into the rear oil seal after removing the rear propeller shaft.
6. Remove the A/T nuts from the A/T crossmember. Refer to TM-188, "
Removal and Installation (4WD)".
7. Position two suitable jacks under the A/T and transfer assembly.
8. Remove the crossmember. Refer to TM-188, "
Removal and Installation (4WD)".
WARNING:
Support A/T and transfer assembly using two suitable jacks while removing crossmember.
9. Disconnect the electrical connectors from the following: • ATP switch
• Neutral 4LO switch
• Wait detection switch
• Transfer motor
• Transfer control device
• Transfer terminal cord assembly
10. Disconnect each air breather hose from the following. Refer to DLN-137, "
Removal and Installation".
• Actuator
• Breather tube (transfer)
• Transfer motor
11. Remove the transfer control dev ice from the extension housing.
12. Remove the transfer to A/T and A/T to transfer bolts.
13. Remove the transfer assembly. WARNING:
Support transfer assembly with su itable jack while removing it.
CAUTION:
Do not damage rear oil seal (A/T).
INSTALLATION
Installation is in the reverse order of removal.
• Tighten the bolts to specification.
• Fill the transfer with new fluid and check for fluid leakage and fluid level. Refer to DLN-129, "
Replacement".
• Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to DLN-129, "
Inspection".
Transfer bolt torque : 36 N·m (3.7 kg-m, 27 ft-lb)
SMT872C
Revision: April 20092010 QX56

PROPELLER SHAFTDLN-197
< REMOVAL AND INSTALLATION > [PROPELLER SHAFT: 2S1410]
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4WD
REMOVAL
1. Move the A/T select lever to the N position and release the parking brake.
2. Put matching marks on the rear propeller shaft flange yoke and the rear final drive companion flange as shown.
CAUTION:
For matching marks, use paint. Never damage the rear pro-
peller shaft flange yoke or the companion flange.
3. Remove the bolts, then remove the propeller shaft from the rear final drive and A/T or transfer.
INSPECTION
• Inspect the propeller shaft runout. If runout exceeds the limit, replace the propeller shaft assembly.
AWDIA0699GB
1. Propeller shaft tube 2. Snap ring3. Journal bearing
4. Sleeve yoke 5. Journal6. Flange yoke
Front
WDIA0049E
Limit
Propeller shaft run out : Refer to DLN-270, "
In-
spection and Adjustment"
LDIA0121E
Revision: April 20092010 QX56

PROPELLER SHAFTDLN-199
< DISASSEMBLY AND ASSEMBLY > [PROPELLER SHAFT: 2S1410]
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DISASSEMBLY AND ASSEMBLY
PROPELLER SHAFT
Disassembly and AssemblyINFOID:0000000005148909
DISASSEMBLY
Journal
1. Put matching marks on the rear propeller shaft and flange yoke as shown.
CAUTION:
For matching marks use paint. Never damage the rear pro-
peller shaft or flange yoke.
2. Remove the snap rings.
3. Push out and remove the journal bearings by lightly tapping the flange yoke with a hammer, taking care not to damage the jour-
nal or flange yoke hole.
NOTE:
Put marks on the disassembled parts so that they can be rein-
stalled in their original positions from which they were removed.
4. Push out and remove the remaining journal bearings at the opposite side by lightly tapping the flange yoke with a hammer,
taking care not to damage the journal or flange yoke hole.
NOTE:
Put marks on the disassembled parts so that they can be rein-
stalled in their original positions from which they were removed.
ASSEMBLY
SPD128
APD011
SPD732
SPD131
Revision: April 20092010 QX56