clutch INFINITI QX56 2006 Factory Owners Manual

OVERHAULAT-251
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
1. O-ring2. Oil pump cover3. O-ring
4. Oil pump housing 5. Self-sealing bolt6. Torque converter
7. Converter housing 8. Oil pump housing oil seal9. Bearing race
10. Needle bearing 11. O-ring12. 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 ring21. 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

AT-252
OVERHAUL
Revision: November 20092006 QX56
1. Bearing race2. High and low reverse clutch assem-
bly 3. Needle bearing
4. Direct clutch assembly 5. Needle bearing 6. Reverse brake dish plate
SCIA5181E

AT-264
DISASSEMBLY
Revision: November 20092006 QX56
DISASSEMBLYPFP:31020
DisassemblyECS00EQ7
CAUTION:
Do not disassemble parts behind drum support. Refer to AT- 1 7 , "
Cross-Sectional View (2WD models)"
or AT- 1 8 , "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. CAUTION:
Be careful not to scratch converter housing.
SCIA5010E
SCIA3171E
SCIA5171E

DISASSEMBLYAT-265
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
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
To o l .
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.
SCIA5011E
SCIA2300E
Tool number : ST25850000 (J-25721-A)
SCIA5474E
SCIA5172E

AT-266
DISASSEMBLY
Revision: November 20092006 QX56
9. Remove bearing race from oil pump assembly.
10. Remove needle bearing from front sun gear assembly.
11. Remove front sun gear assembly from front carrier assembly.
NOTE:
Remove front sun gear assembly by rotating left/right.
12. Remove seal rings from input clutch assembly.
13. Remove front carrier assembly, input clutch assembly and rear internal gear as a unit.
CAUTION:
Be careful to remove it with needle bearing.
SCIA5252E
SCIA2808E
SCIA5014E
SCIA5269E
SCIA5173E

DISASSEMBLYAT-269
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
22. Remove mid sun gear assembly, rear sun gear assembly and
high and low reverse clutch hub as a unit.
CAUTION:
Be careful to remove them with bearing races 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 direct clutch assembly from reverse brake.
25. Remove needle bearing from drum support edge surface.
26. Remove snap ring from A/T assembly harness connector.
SCIA5018E
SCIA2306E
SCIA5019E
SCIA5198E
SCIA5021E

AT-284
REPAIR FOR COMPONENT PARTS
Revision: November 20092006 QX56
3. Install new oil pump housing oil seal to the oil pump housing
until 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. Refer to AT- 2 5 0 , "
Compo-
nents" .
Front Sun Gear, 3rd One-Way ClutchECS00EOD
COMPONENTS
DISASSEMBLY
1. Remove snap ring from front sun gear using suitable tool. Tool number : ST33400001 (J-26082)
SCIA5313E
SCIA5228E
1. Front sun gear
2. 3rd one-way clutch 3. Snap ring
SCIA3114E
SCIA3110E

REPAIR FOR COMPONENT PARTSAT-285
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
2. Remove 3rd one-way clutch from front sun gear.
INSPECTION
3rd One-way Clutch

Check frictional surface for wear or damage.
CAUTION:
If necessary, replace the 3rd one-way clutch.
Front Sun Gear Snap Ring

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the snap ring.
Front Sun Gear

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the front sun gear.
ASSEMBLY
1. Install 3rd one-way clutch in front sun gear.
CAUTION:
Apply ATF to 3rd one-way clutch.
2. Install snap ring in front sun gear using suitable tool.
3. Check operation of 3rd one-way clutch.
a. Hold oil pump assembly and turn front sun gear.
S C I A 3 111 E
S C I A 3 111 E
SCIA3110E

AT-286
REPAIR FOR COMPONENT PARTS
Revision: November 20092006 QX56
b. Check 3rd one-way clutch for correct locking and unlocking
directions.
CAUTION:
If not as shown, check installation direction of 3rd one-way
clutch.
Front Carrier, Input Clutch, Rear Internal GearECS00EOE
COMPONENTS
SCIA3131E
SCIA5244E

REPAIR FOR COMPONENT PARTSAT-287
DE
F
G H
I
J
K L
M A
B
AT
Revision: November 2009 2006 QX56
DISASSEMBLY
1. Compress snap ring using suitable tool.
2. Remove front carrier assembly and input clutch assembly from
rear internal gear.
3. Remove front carrier assembly from input clutch assembly.
a. Remove bearing race from front carrier assembly.
b. Remove needle bearing from front carrier assembly.
c. Remove snap ring from front carrier assembly.
CAUTION:
Do not expand snap ring excessively.
1. Seal ring 2. O-ring3. Needle bearing
4. Bearing race 5. Front carrier assembly6. Needle bearing
7. Snap ring 8. Snap ring9. Retaining plate
10. Driven plate 11. Input clutch drum12. Drive plate
13. Rear internal gear
SCIA5661E
SCIA5232E
SCIA5233E
SCIA5234E