2005 INFINITI QX4 clutch

ON-VEHICLE SERVICE
AT-229
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Revision: October 20052005 QX56
ON-VEHICLE SERVICEPFP:00000
Oil PanECS00CKW
REMOVAL AND INSTALLATION
Removal
1. Drain A/T fluid, refer to MA-24, "Changing A/T Fluid" .
2. Remove oil pan and gasket.
3. Check foreign materials in oil pan to help determine cause of malfunction. If the A/T fluid is very dark, has
some burned smell, or contains foreign particles, friction material (clutches, band) may need replacement.
A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and
clutches to stick and can inhibit pump pressure.
CAUTION:
If friction material is detected, flush the transmission cooler after repair, refer to AT- 1 3 , "
A/T FLUID
COOLER CLEANING PROCEDURE" .
4. Remove magnets from oil pan.
Installation
1. Install the oil pan magnets as shown.
SCIA2308E
SCIA5200E
SCIA5200E

OVERHAUL
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Revision: October 20052005 QX56
1. O-ring 2. Oil pump cover 3. O-ring
4. Oil pump housing 5. Self-sealing bolt 6. Torque converter
7. Converter housing 8. Oil pump housing oil seal 9. Bearing race
10. Needle bearing 11. O-ring 12. Front carrier assembly
13. Needle bearing 14. Snap ring 15. Front sun gear
16. 3rd one-way clutch 17. Snap ring 18. Bearing race
19. Needle bearing 20. Seal ring 21. Input clutch assembly
22. Needle bearing 23. Rear internal gear 24. 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 gear 33. 1st one-way clutch
34. Snap ring 35. Needle bearing 36. High and low reverse clutch hub
37. Snap ring 38. Bearing race 39. Needle bearing

AT-252
OVERHAUL
Revision: October 20052005 QX56
1. Bearing race 2. High and low reverse clutch assem-
bly3. Needle bearing
4. Direct clutch assembly 5. Needle bearing 6. Reverse brake dish plate
SCIA5181E

AT-262
DISASSEMBLY
Revision: October 20052005 QX56
DISASSEMBLYPFP:31020
DisassemblyECS00CL5
CAUTION:
Do not disassemble parts behind Drum Support. Refer to AT-1 6, "
Cross-Sectional View (2WD models)"
or AT-17, "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. When fixing bearing support with check tool, rotate one- way
clutch spline using screwdriver.
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

DISASSEMBLY
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Revision: October 20052005 QX56
5. Remove O-ring from input clutch assembly.
6. Remove tightening bolts for oil pump assembly and transmis-
sion case.
7. Attach sliding hammer to oil pump assembly and extract it
evenly from transmission case.
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.
SCIA5 011 E
SCIA2300E
SCIA5474E
SCIA5172E

AT-264
DISASSEMBLY
Revision: October 20052005 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

DISASSEMBLY
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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:
Be careful to remove then 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-282
REPAIR FOR COMPONENT PARTS
Revision: October 20052005 QX56
3. Install 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 bolt to the specified torque. Refer to AT- 2 5 0 , "
Compo-
nents" .
Front Sun Gear, 3rd One-Way ClutchECS00CL7
COMPONENTS
DISASSEMBLY
1. Using a flat-bladed screwdriver, remove snap ring from front sun
gear.Tool number : ST33400001 (J-26082)
SCIA5313E
SCIA5228E
1. Front sun gear 2. 3rd one-way clutch 3. Snap ring
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