2007 INFINITI QX56 transmission

TRANSMISSION ASSEMBLY
AT-227
< SERVICE INFORMATION >
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17. Plug any openings such as the fluid charging pipe hole.
18. Remove A/T assembly to engine bolts using power tool.
19. Remove A/T assembly with transfer from vehicle.
CAUTION:
• Secure torque converter to prevent it from dropping.
• Secure A/T assembly to transmission jack.
20. Remove transfer from A/T assembly. Refer to TF-128, "
Removal and Installation".
INSPECTION
Installation and Inspection of Torque Converter
• After inserting a torque converter to a transmission, be sure to
check dimension A to ensure it is within specifications.
INSTALLATION
Installation of the remaining components is in the reverse order of removal, while paying attention to the fol-
lowing:
• 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 Trans-
mission Fluid (ATF)", AT-208, "Checking of A/T Position" and AT-208, "Adjustment of A/T Position". Dimension A : 24.0 mm (0.94 in) or more
SAT017B
Transmission to engine bolts : 113 N·m (12 kg-m,
83 ft-lb)
LCIA0371E
LCIA0335E

AT-232
< SERVICE INFORMATION >
OVERHAUL
13. Revolution sensor 14. Parking gear 15. Output shaft
16. Bearing race 17. Needle bearing 18. Manual plate
19. Parking rod 20. Manual shaft oil seal 21. Manual shaft
22. O-ring 23. Band servo anchor end pin 24. Detent spring
25. Spacer 26. Seal ring 27. Snap ring
28. Return spring 29. O-ring 30. Servo assembly
31. Snap ring 32. Sub-harness 33. Control valve with TCM
34. Bracket 35. A/T fluid temperature sensor 2 36. Terminal cord assembly
37. O-ring 38. Retaining pin 39. Transmission case
*: Apply Genuine Anaerobic Liquid Gasket or equivalent.
Refer to GI-45, "
Recommended Chemical Product and Sealant".

AT-234
< SERVICE INFORMATION >
OVERHAUL
19. Manual shaft oil seal 20. Manual shaft 21. O-ring
22. Band servo anchor end pin 23. Detent spring 24. Spacer
25. Seal ring 26. Snap ring 27. Return spring
28. O-ring 29. Servo assembly 30. Snap ring
31. Sub-harness 32. Control valve with TCM 33. Bracket
34. A/T fluid temperature sensor 2 35. Terminal cord assembly 36. O-ring
37. Retaining pin 38. Transmission case

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.
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DISASSEMBLY
AT-241
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5. Remove O-ring from input clutch assembly.
6. Remove bolts for oil pump assembly and transmission case.
7. Extract oil pump assembly evenly from transmission case using
Tool.
CAUTION:
• Fully tighten sliding hammer screw.
• Make sure that bearing race is installed to the oil pump
assembly edge surface.
8. Remove O-ring from oil pump assembly.
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Tool number : ST25850000 (J-25721-A)
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DISASSEMBLY
AT-243
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14. Loosen lock nut and remove band servo anchor end pin from
transmission case.
15. Remove brake band from transmission case.
•To prevent brake linings from cracking or peeling, do not
stretch the flexible band unnecessarily. When removing
the brake band, always secure it with a clip as shown.
Leave the clip in position after removing the brake band.
•Check brake band facing for damage, cracks, wear or
burns.
16. Remove mid carrier assembly and rear carrier assembly as a
unit.
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SAT655
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DISASSEMBLY
AT-247
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34. Remove control valve with TCM from transmission case.
CAUTION:
When removing, be careful with transmission assembly ter-
minal connector and the manual valve notch and manual
plate height. Remove it vertically.
35. Remove A/T fluid temperature sensor 2 with bracket from con-
trol valve with TCM.
36. Remove bracket from A/T fluid temperature sensor 2.
37. Remove O-ring from A/T assembly harness connector.
38. Disconnect TCM connectors.
CAUTION:
Be careful not to damage connectors.
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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.
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