2008 INFINITI QX56 clutch

OVERHAULTM-221
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
: Apply Liquid Gasket (Three Bond 1215) or the equivalent. 1. O-ring
2. Oil pump cover3. O-ring
4. Oil pump housing 5. Self-sealing bolts6. Torque converter
7. Converter housing 8. Oil pump housing oil seal9. Bearing race
10. Needle bearing 11. O-ring 12. Front carrier assembly
13. Needle bearing 14. Snap ring15. Front sun gear
16. 3rd one-way clutch 17. Snap ring18. Bearing race
19. Needle bearing 20. Seal ring 21. Input clutch assembly
22. Needle bearing 23. Rear internal gear24. Brake band
25. Mid carrier assembly 26. Needle bearing 27. Bearing race
28. Rear carrier assembly 29. Needle bearing 30. Mid sun gear
31. Seal ring 32. Rear sun gear33. 1st one-way clutch
34. Snap ring 35. Needle bearing36. High and low reverse clutch hub
37. Snap ring 38. Bearing race39. Needle bearing
Revision: March 2010 2008 QX56

TM-222
< DISASSEMBLY AND ASSEMBLY >
OVERHAUL
1. Needle bearing2. Bearing race3. High and low reverse clutch assembly
4. Needle bearing 5. Direct clutch assembly6. Reverse brake dish plate
7. Reverse brake dish plate 8. Reverse brake driven plate 9. N-spring
10. Reverse brake drive plate 11. Reverse brake retaining plate 12. Snap ring
13. D-ring 14. D-ring15. Reverse brake piston
16. Return spring 17. Spring retainer18. Snap ring
SCIA7001E
Revision: March 2010 2008 QX56

TM-232
< DISASSEMBLY AND ASSEMBLY >
DISASSEMBLY
DISASSEMBLY
DisassemblyINFOID:0000000004917895
CAUTION:
Do not disassemble parts behind Drum Support. Refer to TM-8, "
Cross-Sectional View (2WD models)".
1. Drain A/T fluid 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 a check tool as shown.
a. Insert a check tool into the groove of bearing support built into one-way clutch outer race.
b. While holding bearing support with a check tool, rotate one-way clutch spline using suitable tool.
c. Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.
4. Remove bolts and converter housing from transmission case. CAUTION:
Do not scratch converter housing.
• Self-sealing bolt (A)
SCIA5010E
SCIA3171E
WCIA0624E
Revision: March 2010 2008 QX56

DISASSEMBLYTM-233
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
5. Remove O-ring from input clutch assembly.
6. Remove oil pump assembly to transmission case bolts.
7. Remove the oil pump assembly evenly from the transmission case using Tools.
CAUTION:
• Fully tighten the sliding hammer screws.
• Make sure that bearing race is installed to the oil pumpassembly edge surface.
8. Remove O-ring from oil pump assembly.
SCIA5011E
SCIA2300E
Tool number : ST25850000 (J-25721-A)
SCIA5474E
SCIA5172E
Revision: March 2010 2008 QX56

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.
SCIA6529E
SCIA2808E
SCIA5014E
SCIA2470E
SCIA5015E
Revision: March 2010 2008 QX56

DISASSEMBLYTM-237
< DISASSEMBLY AND ASSEMBLY >
CEF
G H
I
J
K L
M A
B
TM
N
O P
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.
SCIA5018E
SCIA2306E
SCIA5198E
SCIA5019E
SCIA5021E
Revision: March 2010 2008 QX56

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.
SCIA5022E
SCIA5199E
SCIA5200E
SCIA8124E
Revision: March 2010 2008 QX56

TM-252
< DISASSEMBLY AND ASSEMBLY >
REPAIR FOR COMPONENT PARTS
3. Install new oil pump housing oil seal to the oil pump housinguntil it is flush with the face of oil pump housing using Tool.
CAUTION:
• Do not reuse oil seal.
• Apply ATF to oil seal.
4. Install oil pump housing in oil pump cover. Tighten oil pump housing bolts to the specified torque.
Front Sun Gear, 3rd One-Way ClutchINFOID:0000000004917897
COMPONENTS
DISASSEMBLY
Tool number : ST33400001 (J-26082)
SCIA5313E
SCIA5228E
1. Front sun gear 2. 3rd one-way clutch3. Snap ring
SCIA3114E
Revision: March 2010 2008 QX56