2004 INFINITI QX56 clutch

DISASSEMBLY
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Revision: August 20072004 QX56
27. Push A/T assembly harness connector.
CAUTION:
Be careful not to damage connector.
28. Remove oil pan and oil pan gasket.
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 detected, perform A/T fluid cooler
cleaning. Refer to AT-15, "
A/T Fluid Cooler Cleaning" .
30. Remove magnets from oil pan.
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Revision: August 20072004 QX56
3. Using a drift, install oil pump housing oil seal to the oil pump
housing until it is flush.
CAUTION:

Do not reuse oil seal.

Apply ATF to oil seal.
4. Install oil pump housing in oil pump cover. Tighten oil pump
housing fitting bolt to the specified torque. Refer to AT-290,
"COMPONENTS" .
Front Sun Gear, 3rd One-Way ClutchUCS002J L
COMPONENTS
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1. Front sun gear 2. 3rd one-way clutch 3. Snap ring
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Revision: August 20072004 QX56
DISASSEMBLY
1. Using a flat-bladed screwdriver, remove snap ring from front sun
gear.
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.
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Revision: August 20072004 QX56
2. Using a flat-bladed screwdriver, install snap ring in front sun
gear.
3. Check operation of 3rd one-way clutch.
a. Hold oil pump assembly and turn front sun gear.
b. Check 3rd one-way clutch for correct locking and unlocking
directions.
CAUTION:
If not as shown in illustration, check installation direction of
3rd one-way clutch.
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Front Carrier, Input Clutch, Rear Internal GearUCS002JM
COMPONENTS
1. Seal ring 2. O-ring 3. Needle bearing
4. Bearing race 5. Front carrier assembly 6. Needle bearing
7. Snap ring 8. Snap ring 9. Retaining plate
10. Driven plate 11. Input clutch drum 12. Drive plate
13. Rear internal gear
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Revision: August 20072004 QX56
DISASSEMBLY
1. Compress snap ring using 2 flat-bladed screwdrivers.
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.
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Revision: August 20072004 QX56
4. Disassemble input clutch assembly.
a. Remove O-ring and seal rings from input clutch assembly.
b. Remove needle bearing from input clutch assembly.
c. Using a flat-bladed screwdriver, remove snap ring from input
clutch drum.
d. Remove drive plates, driven plates and retaining plate from input
clutch drum.
INSPECTION
Front Carrier Snap Ring

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the snap ring.
Input Clutch Snap Ring

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the input clutch assembly.
Input Clutch Drum

Check for deformation, fatigue or damage or burns.
CAUTION:
If necessary, replace the input clutch assembly.
Input Clutch Drive Plates

Check facing for burns, cracks or damage.
CAUTION:
If necessary, replace the input clutch assembly.
Input Clutch Retaining Plate and Driven Plates

Check facing for burns, cracks or damage.
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Revision: August 20072004 QX56
CAUTION:
If necessary, replace the input clutch assembly.
Front Carrier Assembly

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the front carrier assembly.
Rear Internal Gear

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the rear internal gear.
ASSEMBLY
1. Install input clutch.
a. Install drive plates, driven plates and retaining plate in input
clutch drum.
CAUTION:
Take care with order of plates.
b. Using a flat-bladed screwdriver, install snap ring in input clutch
drum.
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