INFINITI QX56 2008 Factory Service Manual

TM-234
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
9. Remove bearing race from oil pump assembly.
10. Remove needle bearing from front sun gear.
11. Remove front sun gear assembly from front carrier assembly.NOTE:
Remove front sun gear by rotating it left and right.
12. Remove seal rings from input clutch assembly.
13. Remove front carrier assembly (with input clutch assembly and rear internal gear) from rear carrier assembly.
CAUTION:
Do not remove it with needle bearing.
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DISASSEMBLYTM-235
< DISASSEMBLY AND ASSEMBLY >
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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.
CAUTION:
• 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.
• 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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TM-236
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
17. Remove mid carrier assembly from rear carrier assembly.
18. Remove needle bearing (front side) from mid carrier assembly.
19. Remove needle bearing (rear side) from mid carrier assembly.
20. Remove bearing race from rear carrier assembly.
21. Remove needle bearing from rear carrier assembly.
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DISASSEMBLYTM-237
< DISASSEMBLY AND ASSEMBLY >
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22. Remove mid sun gear assembly , rear sun gear assembly and
high and low reverse clutch hub as a unit.
CAUTION:
Remove them with bearing race and needle bearing.
23. Remove high and low reverse clutch assembly from direct clutch assembly.
CAUTION:
Make sure that needle bearing is installed to the high and
low reverse clutch assembly edge surface.
24. Remove needle bearing from drum support.
25. Remove direct clutch assembly from reverse brake.
26. Remove snap ring from A/T assembly harness connector.
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TM-238
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
27. Push A/T assembly harness connector.CAUTION:
Do not damage connector.
28. Remove oil pan and oil pan gasket. Refer to TM-199, "
Oil Pan".
29. Check foreign materials in oil pan to help determine causes of malfunction. If the A/T fluid is very dark, smells burned, or con-
tains foreign particles, the frictional material (clutches, band)
may need replacement. A tacky film that will not wipe clean indi-
cates varnish build up. Varnish can cause valves, servo, and
clutches to stick and can inhibit pump pressure.
• If frictional material is de tected, perform A/T fluid cooler
cleaning. Refer to TM-182, "
A/T Fluid Cooler Cleaning".
30. Remove magnets from oil pan.
31. Disconnect A/T fluid temperature sensor 2 connector (A). CAUTION:
Do not damage connector.
32. Straighten terminal clip to free terminal cord assembly and A/ T fluid temperature sensor 2 harness.
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DISASSEMBLYTM-239
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33. Disconnect output speed sensor connector (1). CAUTION:
Do not damage connector.
34. Straighten terminal clip ( ) to free output speed sensor har- ness.
35. Remove bolts (A), (B) and (C) from control valve with TCM. • : Front
36. Remove control valve with TCM from transmission case. CAUTION:
When removing, be careful with the manual valve notch and
manual plate height. Remove it vertically.
37. Remove A/T fluid temperature sensor 2 with bracket from con- trol valve with TCM.
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Bolt symbol Length mm (in) Number of bolts
A 42 (1.65) 5
B 55 (2.17) 6
C 40 (1.57) 1
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TM-240
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
38. Remove bracket from A/T fluid temperature sensor 2.
39. Remove O-ring from A/T assembly harness connector.
40. Disconnect TCM connectors.CAUTION:
Do not damage connectors.
41. Remove A/T assembly harness connector from control valve with TCM using suitable tool.
42. Disconnect TCM connector (1) and transmission range position switch connector (2).
CAUTION:
Do not damage connectors.
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DISASSEMBLYTM-241
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43. Remove rear extension assembly (2WD models) or adapter case assembly (4WD models) according to the following procedures.
a. 2WD models
i. Remove bolts and brackets (1) From rear extension assembly and transmission case.
• Self-sealing bolts (2)
ii. Tap rear extension assembly with soft hammer.
iii. Remove rear extension assembly (with needle bearing) from transmission case.
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TM-242
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
b.4WD models
i. Remove adapter case to transmission case bolts and terminal brackets (1).
• Self-sealing bolt (2)
ii. Tap adapter case assembly using suitable tool.
iii. Remove adapter case assembly (with needle bearing) from transmission case.
iv. Remove gasket from transmission case.
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DISASSEMBLYTM-243
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44. Remove bearing race from output shaft.
45. Remove output shaft from transmission case by rotating left and right.
46. Remove parking gear from output shaft.
47. Remove seal rings from output shaft.
48. Remove needle bearing from transmission case.
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