2009 INFINITI QX56 oil

DLN-132
< ON-VEHICLE REPAIR >[ATX14B]
FRONT OIL SEAL
1. Install the new front oil seal until it is flush with the end face of
the front case using Tool.
CAUTION:
 Do not reuse oil seal.
 Apply petroleum jelly to oil seal.
2. Align the matching mark of the front drive shaft with the match- ing mark of the companion flange, then install the companion
flange.
3. Install the new self-lock nut. Tighten to the specified torque using suitable tool. Refer to DLN-142, "Disassembly and
Assembly".
CAUTION:
Do not reuse self-lock nut.
4. Install the front propeller shaft. Refer to DLN-186, "Removal and
Installation".
5. Refill the transfer with fluid and check for fluid leakage and fluid level. Refer to DLN-129, "Inspection"
.
Tool number : KV38100500 ( — )
SDIA2662E
SDIA2658E
LDIA0147E
Revision: December 20092009 QX56

REAR OIL SEALDLN-133
< ON-VEHICLE REPAIR > [ATX14B]
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REAR OIL SEAL
Removal and InstallationINFOID:0000000004193527
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: December 20092009 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: December 20092009 QX56

SIDE OIL SEALDLN-135
< ON-VEHICLE REPAIR > [ATX14B]
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SIDE OIL SEAL
Removal and InstallationINFOID:0000000004193528
REMOVAL
1. Remove the front propeller shaft. Refer to DLN-186, "Removal and Installation".
2. Remove the companion flange. Refer to DLN-142, "Disassembly and Assembly"
.
3. Remove the transfer control device from the transfer assembly. Refer to DLN-136, "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 DLN-136, "Removal and Installation"
.
3. Install the companion flange. Refer to DLN-142, "Disassembly
and Assembly".
4. Install the front propeller shaft. Refer to DLN-186, "Removal and Installation"
.
SDIA2666E
Tool number : ST22360002 (J-25679-01)
SDIA2665E
Revision: December 20092009 QX56

DLN-140
< ON-VEHICLE REPAIR >[ATX14B]
TRANSFER MOTOR
TRANSFER MOTOR
Removal and InstallationINFOID:0000000004193531
REMOVAL
1. Disconnect the transfer motor connector.
2. Remove the transfer motor air breather hose from the transfer
motor. Refer to DLN-137, "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 DLN-140, "Removal and Installation"
.
CAUTION:
Be sure to install connector bracket.
3. Install the transfer motor air breather hose to the transfer motor. Refer to DLN-137, "Removal and Installation"
.
4. Connect the transfer motor connector.
5. Check the transfer fluid. Refer to DLN-129, "Replacement"
.
6. Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to DLN-129,
"Inspection".
SDIA2133E
SDIA2787E
Revision: December 20092009 QX56

TRANSFER ASSEMBLYDLN-141
< REMOVAL AND INSTALLATION > [ATX14B]
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REMOVAL AND INSTALLATION
TRANSFER ASSEMBLY
Removal and InstallationINFOID:0000000005874982
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 DLN-129, "Replacement"
.
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-216, "Removal and Installation (4WD)"
.
7. Position two suitable jacks under the A/T and transfer assembly.
8. Remove the crossmember. Refer to TM-216, "Removal and Installation (4WD)"
.
WARNING:
Support A/T and transfer assembly using two suitable jacks while removing crossmember.
9. Disconnect the electrical c onnectors 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: December 20092009 QX56

DLN-142
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
DISASSEMBLY AND ASSEMBLY
TRANSFER ASSEMBLY
Disassembly and AssemblyINFOID:0000000005874983
COMPONENTS
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. Input bearing
13. Wait detection switch 14. Check plug 15. Check spring
16. Check ball 17. Front case 18. Snap ring
19. Input oil seal 20. Shift cross 21. Side oil seal
22. Lock pin 23. Shift lever 24. Gasket
25. Drain plug 26. Front oil seal 27. Companion flange
28. Self-lock nut 29. Mainshaft 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
AWDIA0014GB
Revision: December 20092009 QX56

TRANSFER ASSEMBLYDLN-143
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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40. Retaining plate 41. Driven plate (10 sheet) 42. Drive plate (10 sheet)
43. Return spring assembly 44. Press flange 45. Thrust needle bearing
46. Snap ring 47. Retaining pin 48. L-H fork
49. 2-4 fork 50. Shift fo rk spring 51. Fork guide
52. Retainer pin 53. Shift rod
1. Dust cover 2. Rear oil seal 3. Rear case
4. Breather tube 5. Seal ring 6. Main oil pump cover
7. Inner gear 8. Outer gear 9. Main oil pump housing
10. D-ring 11. D-ring 12. Clutch piston
13. Thrust needle bearing race 14. Oil strainer 15. O-ring
16. Snap ring 17. Control valve assembly 18. Lip seal (large 5 pieces)
19. Lip seal (small 2 pieces) 20. Gasket 21. Filler plug
22. Oil filter stud 23. O-ring 24. Oil filter
25 ATP switch 26. Neutral-4LO switch 27. Oil pressure check plug
28. Harness bracket 29. Air breather hose clamp 30. Stem bleeder
31. Harness bracket 32. Center case 33. Mainshaft rear bearing
34. C-ring 35. Washer holder 36. Snap ring
37. Sub oil pump housing 38. Outer gear 39. Inner gear
WDIA0302E
Revision: December 20092009 QX56