4WD INFINITI QX56 2007 Factory User Guide

TRANSMISSION ASSEMBLY
AT-225
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• When installing transmission to the engine, attach the bolts as shown.
NOTE:
*: No.2 bolt also secures air breather vent.
CAUTION:
• When replacing an engine or transmission you must make
sure the dowels are installed correctly during re-assembly.
• Improper alignment caused by missing dowels may cause
vibration, oil leaks or breakage of drivetrain components.
• Align the positions of bolts for drive plate with those of the torque
converter, and temporarily tighten the bolts. Then tighten the bolts
with the specified torque.
CAUTION:
• When turning crankshaft, turn it clockwise as viewed from the
front of the engine.
• After converter is installed to drive plate, rotate crankshaft
several turns and check to be sure that transmission rotates
freely without binding.
• Install crankshaft position sensor (POS).
• After completing installation check fluid leakage, fluid level and the
positions of A/T. Refer to AT-13, "
Checking Automatic Transmis-
sion Fluid (ATF)", AT-208, "Checking of A/T Position" and AT-208, "Adjustment of A/T Position".
Removal and Installation (4WD)INFOID:0000000003532482
COMPONENTS
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
LCIA0335E
AWDIA0441GB

OVERHAUL
AT-233
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4WD models
AWDIA0455GB
1. Rear oil seal 2. Bracket 3. Adapter case
4. Parking actuator support 5. Parking pawl 6. Return spring
7. Pawl shaft 8. Self-sealing bolt 9. Seal ring
10. Needle bearing 11. Gasket 12. Revolution sensor
13. Parking gear 14. Output shaft 15. Bearing race
16. Needle bearing 17. Manual plate 18. Parking rod

AT-236
< SERVICE INFORMATION >
OVERHAUL
4WD models
SCIA5189E

AT-238
< SERVICE INFORMATION >
OVERHAUL
4WD models
10. Outer diameter 80 mm (3.15 in) 11. Outer diameter 77 mm (3.03 in) 12. Outer diameter 77 mm (3.03 in)
13. Outer diameter 47 mm (1.85 in) 14. Outer diameter 84 mm (3.31 in) 15. Outer diameter 84 mm (3.31 in)
16. Outer diameter 92 mm (3.62 in) 17. Outer diameter 60 mm (2.36 in) 18. Outer diameter 63 mm (2.48 in)
19. Outer diameter 92 mm (3.62 in) 20. Outer diameter 65 mm (2.56 in) 21. Bearing race
22. Outer diameter 60 mm (2.36 in)
WCIA0561E

AT-240
< SERVICE INFORMATION >
DISASSEMBLY
DISASSEMBLY
DisassemblyINFOID:0000000003532486
CAUTION:
Do not disassemble parts behind drum support. Refer to AT-19, "
Cross-Sectional View (2WD models)"
or AT-20, "Cross-Sectional View (4WD models)".
1. Drain ATF through drain plug.
2. Remove torque converter by holding it firmly and turing while
pulling straight out.
3. Check torque converter one-way clutch using check tool as
shown.
a. Insert check tool into the groove of bearing support built into
one-way clutch outer race.
b. While holding bearing support with check tool, rotate one- way
clutch spline using suitable tool.
c. Check that inner race rotates clockwise only. If not, replace
torque converter assembly.
4. Remove converter housing from transmission case.
• A: Self-sealing bolts
CAUTION:
Be careful not to scratch converter housing.
SCIA5010E
SCIA3171E
WCIA0624E

AT-248
< SERVICE INFORMATION >
DISASSEMBLY
39. Remove A/T assembly harness connector from control valve
with TCM using suitable tool.
40. Disconnect TCM connector and park/neutral position switch
connector.
CAUTION:
Be careful not to damage connectors.
41. Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to
the following procedures.
a.2WD models
• Self-sealing bolts (2)
i. Remove bolts for rear extension assembly and transmission
case.
ii. Remove brackets (1).
iii. Tap rear extension assembly using suitable tool.
SCIA5448E
SCIA5449E
WCIA0562E
SCIA5028E

DISASSEMBLY
AT-249
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iv. Remove rear extension assembly with needle bearing from
transmission case.
b.4WD models
• Self-sealing bolts (2)
i. Remove bolts for adapter case assembly and transmission
case.
ii. Remove brackets (1).
iii. Tap adapter case assembly using suitable tool.
iv. Remove adapter case assembly with needle bearing from trans-
mission case.
SCIA5029E
WCIA0563E
SCIA5205E

AT-256
< SERVICE INFORMATION >
DISASSEMBLY
69. Remove parking actuator support from rear extension (2WD
models) or adapter case (4WD models).
70. Remove parking pawl (with return spring) and pawl shaft from
rear extension (2WD models) or adapter case (4WD models).
71. Remove return spring (1) from parking pawl (2).
72. Remove needle bearing from rear extension (2WD models) or
adapter case (4WD models).
SCIA3423E
SCIA3424E
SCIA6180E
SCIA5221E

DISASSEMBLY
AT-257
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73. Remove rear oil seal from rear extension (2WD models) or
adapter case (4WD models) using suitable tool.
CAUTION:
Be careful not to scratch rear extension (2WD models) or
adapter case (4WD models).
SCIA5272E

AT-282
< SERVICE INFORMATION >
ASSEMBLY
24. Install revolution sensor to transmission case. Tighten revolution
sensor bolt to the specified torque. Refer to AT-228, "
Compo-
nent".
CAUTION:
• Do not subject it to impact by dropping or hitting it.
• Be careful not to damage harness with the edge of case.
• Do not allow metal filings or foreign material to get on the
sensor front edge magnetic area.
• Do not place in an area affected by magnetism.
25. Install new rear oil seal until it is flush into the rear extension
(2WD models) using Tool or adapter case (4WD models) using
suitable tool.
CAUTION:
• Apply ATF to rear oil seal.
• Do not reuse rear oil seal.
26. Install return spring (1) to parking pawl (2).
27. Install parking pawl (with return spring) and pawl shaft to rear
extension (2WD models) or adapter case (4WD models).
SCIA2320E
Tool number : ST33400001 (J-26082)
SCIA5581E
SCIA6180E
SCIA3424E