2004 INFINITI QX56 transfer

SIDE OIL SEAL
TF-103
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MA
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TF
Revision: August 20072004 QX56
SIDE OIL SEALPFP:33142
Removal and InstallationEDS00317
REMOVAL
1. Remove the front propeller shaft. Refer to PR-4, "Removal and Installation" .
2. Remove the companion flange. Refer to TF-99, "
Removal and Installation" .
3. Remove the transfer control device from the transfer assembly. Refer to TF-104, "
Removal and Installa-
tion" .
4. Remove the side oil seal.
CAUTION:
Do not damage shift cross.
INSTALLATION
1. Install the side oil seal until it is flush with the end face of case,
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-104, "
Removal and Installation" .
3. Install the companion flange. Refer to TF-99, "
Removal and
Installation" .
4. Install the front propeller shaft. Refer to PR-4, "
Removal and Installation" .
SDIA2666E
Tool number : ST22360002 (J-25679-01)
SDIA2665E

TF-104
TRANSFER CONTROL DEVICE
Revision: August 20072004 QX56
TRANSFER CONTROL DEVICEPFP:33251
Removal and InstallationEDS00318
Refer to the figure for transfer control device removal and installation information.
CAUTION:

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

Check 4WD shift indicator after installation.
1. Shift lever 2. Actuator
SDIA2654E

AIR BREATHER HOSE
TF-105
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MA
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TF
Revision: August 20072004 QX56
AIR BREATHER HOSEPFP:31098
Removal and InstallationEDS00319
Refer to the figure for air breather hose removal and installation information.
CAUTION:

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

Install the air breather hose into the air breather (metal connector) and actuator (case connector)
until the hose end reaches the base of the tube.

Install the air breather hose into the breather tube (metal connector) and transfer motor (case con-
nector) until the hose end reaches the end of the curved section.
SDIA2656E

TF-106
TRANSFER MOTOR
Revision: August 20072004 QX56
TRANSFER MOTORPFP:00000
Removal and InstallationEDS0018R
REMOVAL
1. Disconnect transfer motor harness connector.
2. Remove breather pipe from transfer motor.
3. Remove bolts to detach transfer motor.
NOTE:
After removing transfer motor, be sure to replace O-ring with
new one.
INSTALLATIONEDS0018S
1. Apply ATF or petroleum jelly to new O-ring.
NOTE:
Do not reuse O-ring.
2. Align width across flat-notch with oil pump groove, and install
transfer motor.
3. Tighten bolts.
4. Install breather pipe to transfer motor.
5. Connect transfer motor harness connector.
SDIA2133E
Transfer motor bolts : 45 N·m (4.6 kg-m, 33 ft-lb)
SDIA2185E

TRANSFER OIL FILTER
TF-107
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G
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MA
B
TF
Revision: August 20072004 QX56
TRANSFER OIL FILTERPFP:00000
Removal and InstallationEDS0031A
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 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
SDIA2784E
SDIA2784E

TF-108
TRANSFER OIL FILTER
Revision: August 20072004 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-110, "
Transfer Components" .
CAUTION:

Do not damage oil filter.

Attach oil filter and tighten bolts evenly.
5. Check the transfer fluid. Refer to MA-24, "
Checking Transfer
Fluid" .
6. Start the engine for one minute. Then stop the engine and
recheck the transfer fluid.
WDIA0285E
SDIA2136E

REMOVAL AND INSTALLATION
TF-109
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MA
B
TF
Revision: August 20072004 QX56
REMOVAL AND INSTALLATIONPFP:00000
RemovalEDS0018V
1. Remove A/T undercover using power tools.
2. Remove center exhaust tube and muffler. Refer to EX-3, "
EXHAUST SYSTEM" .
3. Remove front and rear propeller shafts. Refer to PR-5, "
REMOVAL" (front) and PR-9, "REMOVAL"
(rear).
CAUTION:
Be careful not to damage spline, sleeve yoke and rear oil seal when removing the rear propeller
shaft
NOTE:
Insert a plug into rear oil seal after removing rear propeller shaft.
4. Remove A/T mount bolts. Refer to AT-255, "
TRANSMISSION ASSEMBLY" .
5. Position two suitable jacks under A/T and transfer assembly.
6. Remove crossmember. Refer to TF-109, "
REMOVAL AND INSTALLATION" .
WAR NIN G:
Support A/T and transfer assembly using two suitable jacks while removing crossmember.
7. Disconnect the ATP switch, neutral 4LO switch, wait detection switch, transfer motor and transfer control
device electrical connectors.
8. Remove breather hoses from the actuator, transfer rear case and transfer motor.
9. Remove the shift actuator from the extension housing.
10. Remove transfer to A/T bolts.
WAR NIN G:
Support transfer assembly with suitable jack while removing it.
11. Remove transfer assembly.
InstallationEDS0018W
1. Installation is in the reverse order of removal.
Bolt length : 45 mm (1.77 in)
Transfer bolt torque : 36 N·m (3.7 kg-m, 26 ft-lb)
SMT872C

TF-110
OVERHAUL
Revision: August 20072004 QX56
OVERHAULPFP:00000
Transfer ComponentsEDS0018X
1. 2-4 sleeve 2. L-H sleeve 3. Snap ring
4. Internal gear 5. Planetary carrier assembly 6. Metal bushing
7. Needle bearing 8. Sun gear 9. Carrier bearing
10. Snap ring 11. Snap ring 12. Mainshaft front bearing
13. Wait detection switch 14. Check plug 15. Check spring
16. Check ball 17. Front case 18. Snap ring
19. Oil seal 20. Shift cross 21. Oil seal
22. Lock pin 23. Shift lever 24. Washer
25. Drain plug 26. Oil seal 27. Companion flange
28. Self-lock nut 29. Main shaft 30. Needle bearing
31. Front bearing 32. Front drive shaft 33. Rear bearing
34. Spacer 35. Drive chain 36. Clutch drum
37. Snap ring 38. Clutch hub 39. Snap ring
40. Retaining plate 41. Driven plate (10 sheet) 42. Drive plate (10 sheet)
43. Return spring assembly 44. Press flange 45. Thrust needle bearing
SDIA2090E