torque INFINITI QX56 2008 Factory Owner's Guide

DLN-138
< ON-VEHICLE REPAIR >[ATX14B]
TRANSFER MOTOR
TRANSFER MOTOR
Removal and InstallationINFOID:0000000001604418
REMOVAL
1. Disconnect the transfer motor connector.
2. Remove the transfer motor air breather hose from the transfer
motor. Refer to DLN-135, "
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, "
Disassembly and Assembly".
CAUTION:
Be sure to install connector bracket.
3. Install the transfer motor air breather hose to the transfer motor. Refer to DLN-135, "
Removal and Installation".
4. Connect the transfer motor connector.
5. Check the transfer fluid. Refer to DLN-127, "
Inspection".
6. Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to DLN-127,
"Inspection".
SDIA2133E
SDIA2787E
Revision: March 2010 2008 QX56

TRANSFER ASSEMBLYDLN-139
< REMOVAL AND INSTALLATION > [ATX14B]
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REMOVAL AND INSTALLATION
TRANSFER ASSEMBLY
Removal and InstallationINFOID:0000000001604419
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-127, "
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-184, "
Removal and Installation" (front), DLN-
184, "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 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-135, "
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-127, "
Replacement".
• Start the engine for one minute. Then stop the engine and recheck the transfer fluid. Refer to DLN-127, "
Inspection".
Transfer bolt torque : 36 N·m (3.7 kg-m, 27 ft-lb)
SMT872C
Revision: March 2010
2008 QX56

TRANSFER ASSEMBLYDLN-161
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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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 center case. Tighten the bolts to the specified torque. Refer to DLN-125, "
Removal and Installation".
CAUTION:
• Do not damage oil filter.
• Attach oil filter and tighten bolts evenly.
5. Install the outer gear and inner gear into the sub oil pump hous- ing, and measure the side clearance. Refer to " DLN-140, "
Dis-
assembly and Assembly".
6. Align the dowel pin hole and bolt hole of the sub oil pump assembly with the center case. Install the sub oil pump cover.
Then tighten to the specified torque. Refer to DLN-140, "
Disas-
sembly and Assembly"
7. Apply ATF to the new O-ring and install it to the transfer motor.CAUTION:
Do not reuse O-rings.
8. 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, "
Disassembly and Assembly"
CAUTION:
Be sure to install connector bracket.
WDIA0285E
SDIA2136E
SDIA2135E
SDIA2328E
SDIA2787E
Revision: March 2010 2008 QX56

TRANSFER ASSEMBLYDLN-163
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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f. With the lower body down, tighten the two bolts shown.
g. Apply ATF to the new O-rings, and install them to each solenoid valve, switch and terminal body.
CAUTION:
Do not reuse O-rings.
h. Install the following to the control valve assembly: • Clutch pressure solenoid valve
• Clutch pressure switch
• 2-4WD shift solenoid valve
• Line pressure switch
• Transfer fluid temperature sensor
10. Apply ATF to the new lip seals, and install them to the center case.
CAUTION:
• Do not reuse lip seals.
• There are 2 kinds of lip seals (lip seal of large inner diam-eter: 5 pieces, lip seal of small inner diameter: 2 pieces).
Confirm their position for installation.
11. Install the control valve assembly to the center case, and tighten to the specified torque. Refer to DLN-140, "
Disassembly and
Assembly".
CAUTION:
• Do not reuse any part that has been dropped or damaged.
• Make sure valve is assembled in the proper direction.
• Do not use a magnet becau se residual magnetism stays
during assembly.
12. Install the connector assembly into the center case, and secure with a snap ring.
13. Apply ATF to the new O-rings, and install them on the oil strainer.
CAUTION:
Do not reuse O-rings.
14. Install the oil strainer to the control valve assembly.
WDIA0198E
SDIA2123E
SDIA2121E
SDIA2122E
SDIA2782E
Revision: March 2010 2008 QX56

DLN-164
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
15. Tighten the bolts to the specified torque. Refer to
DLN-140, "Dis-
assembly and Assembly".
16. Apply ATF to the new D-rings, and install them to the clutch pis- ton.
CAUTION:
Do not reuse D-rings.
17. Install the thrust needle bearing race to the clutch piston.
18. Install the clutch piston to the center case as shown. CAUTION:
Install so the fitting protrusion of clutch piston aligns with
the dent of center case.
19. Remove all the sealant from the oil pressure check port and inside the center case.
CAUTION:
Remove old sealant adhering to mating surfaces. Also
remove any moisture, oil, or foreign material adhering to
application and mating surfaces.
20. Thread the new oil pressure check plug in 1 or 2 pitches and apply sealant to the oil pressu re check plug threads. Tighten to
the specified torque. Refer to DLN-140, "
Disassembly and
Assembly".
SDIA2119E
SDIA2781E
SDIA2189E
SDIA2190E
SDIA3188E
Revision: March 2010 2008 QX56

DLN-168
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
35. Apply petroleum jelly to the stem bleeder and install it to the cen-
ter case.
36. Apply ATF to the new seal ring and install it to the main oil pump cover.
CAUTION:
Do not reuse seal ring.
37. Install the inner gear and outer gear in the main oil pump hous- ing. Then, measure the side clearance. Refer to DLN-177,
"Inspection and Adjustment".
38. Install the main oil pump housing, outer gear and inner gear to the center case.
39. Install the main oil pump cover to the center case, and tighten to the specified torque. Refer to DLN-140, "
Disassembly and
Assembly".
SDIA2780E
SDIA2783E
SDIA2174E
SDIA2188E
SDIA2130E
Revision: March 2010 2008 QX56

TRANSFER ASSEMBLYDLN-169
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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40. Remove all the sealant from the switch location area and inside the center case.
CAUTION:
Remove old sealant adhering to mounting surfaces. Also
remove any moisture, oil, or foreign material adhering to
application and mounting surfaces.
41. Thread the ATP switch and neutral-4LO switch in one to two pitches and apply sealant to the th reads of the switches. Tighten
to the specified torque. Refer to DLN-140, "
Disassembly and
Assembly".
• Use Genuine Silicone RTV or equivalent. Refer to GI-15,
"Recommended Chemical Products and Sealants".
NOTE:
• Neutral-4LO switch harness connector is gray.
• ATP switch harness connector is black.
42. Install the front drive shaft rear bearing using Tools.
43. Install the front drive shaft to the front bearing using Tools.
44. Install the drive chain to the front drive shaft and clutch drum. CAUTION:
Install drive chain by aligning identification marks to the
rear as shown.Tool number A: KV40100621 (J-25273)
B: ST30032000 (J-26010-01)SDIA3435E
SDIA2198E
Tool number A: KV40100621 (J-25273)B: ST30032000 (J-26010-01)
SDIA2199E
SDIA2200E
Revision: March 2010 2008 QX56

DLN-174
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
21. Tighten the front case bolts to the specified torque. Refer to
DLN-140, "
Disassembly and Assembly".
CAUTION:
Be sure to install air breather hose clamp, connector
bracket and harness clip.
22. Install the drain plug with a new gasket. CAUTION:
Do not reuse gasket.
23. Align the matching mark on the front drive shaft with the mark on the companion flange, then install the companion flange.
24. Install a new companion flange self-lock nut. Tighten to the specified torque using Tool. Refer to DLN-140, "
Disassembly
and Assembly".
CAUTION:
Do not reuse self-lock nut.
25. Remove all the sealant from the check plug, switch mounting and front case.
CAUTION:
Remove old sealant adhering to mating surfaces. Also
remove any moisture, oil, or foreign material adhering to
application and mounting surfaces.
26. Install the check ball and check spring to the front case. Apply sealant to the check plug and wait detection switch and install
them to the front case. Tighten to the specified torque. Refer to
DLN-140, "
Disassembly and Assembly".
• Use Genuine Silicone RTV or equivalent. Refer to GI-15,
"Recommended Chemical Products and Sealants".
NOTE:
Wait detection switch harness connector is black.
SDIA2100E
SDIA2779E
Tool number A: KV40104000 ( — )
WDIA0219E
WDIA0158E
Revision: March 2010 2008 QX56

TRANSFER ASSEMBLYDLN-175
< DISASSEMBLY AND ASSEMBLY > [ATX14B]
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27. Install the new oil seal in the front case using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply petroleum jelly to seal lip before installing.
28. Install the shift lever to the shift cross.
29. Install the lock pin and lock pin nut. Tighten to the specified torque. Refer to DLN-140, "
Disassembly and Assembly".
Rear Case
1. Apply petroleum jelly to the circumference of the new rear oil
seal. Install the new rear oil seal so that it is flush with the case
tip face using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply petroleum jelly to seal lip before installing.
2. Apply petroleum jelly to the circumference of the new dust cover. Position the new dust cover using the identification mark as
shown.
CAUTION:
• Do not reuse dust cover.
• Position the identification mark at the position shown.
3. Install the new dust cover using Tool.
4. Install the air breather into the rear case.
5. Remove all the sealant from the rear case to center case mating surfaces.
CAUTION:
Remove all foreign materials su ch as water, oil, and grease
from center case and rear case mating surfaces.
6. Apply liquid gasket to the entire rear case mating surface of the center case.
•Use Genuine Anaerobic Liquid Gasket or equivalent. Refer to GI-15, "
Recommended Chemical
Products and Sealants".
CAUTION:
Do not to allow Liquid Gasket to enter stem bleeder hole.
Tool number : ST22360002 (J-25679-01)
SDIA2182E
Tool number ST30720000 (J-25405)
SDIA2204E
SDIA3436E
Tool number : KV40105310 ( — )
SDIA2205E
Revision: March 2010
2008 QX56

DLN-176
< DISASSEMBLY AND ASSEMBLY >[ATX14B]
TRANSFER ASSEMBLY
7. Install the rear case to the center case. Tighten the bolts to the
specified torque. Refer to DLN-140, "
Disassembly and Assem-
bly".
SDIA2092E
Revision: March 2010 2008 QX56