2004 INFINITI QX56 Ins

AT-292
REPAIR FOR COMPONENT PARTS
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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REPAIR FOR COMPONENT PARTS
AT-293
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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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SC I A 3 111E
SC I A 3 111E

AT-294
REPAIR FOR COMPONENT PARTS
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.
SCIA3 110 E
SCIA3131E

REPAIR FOR COMPONENT PARTS
AT-297
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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.
SCIA5235E
SCIA2853E
SCIA2864E

AT-298
REPAIR FOR COMPONENT PARTS
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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REPAIR FOR COMPONENT PARTS
AT-299
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Revision: August 20072004 QX56
c. Install needle bearing in input clutch assembly.
CAUTION:
Apply petroleum jelly to needle bearing.
d. Install O-ring and seal rings in input clutch assembly.
CAUTION:

Do not reuse O-ring and seal rings.

Apply ATF to O-ring.

Apply petroleum jelly to seal rings.
2. Install front carrier assembly.
a. Install snap ring to front carrier assembly.
CAUTION:
Do not expand snap ring excessively.
b. Install needle bearing in front carrier assembly.
CAUTION:

Take care with the direction of needle baering. Refer to
AT-271, "
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings" .

Apply petroleum jelly to needle bearing.
c. Install bearing race in front carrier assembly.
CAUTION:
Apply petroleum jelly to bearing race.
d. Install front carrier assembly to input clutch assembly.
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AT-300
REPAIR FOR COMPONENT PARTS
Revision: August 20072004 QX56
3. Compress snap ring using 2 flat-bladed screwdrivers.
4. Install front carrier assembly and input clutch assembly to rear
internal gear.
Mid Sun Gear, Rear Sun Gear, High and Low Reverse Clutch HubUCS002JN
COMPONENTS
DISASSEMBLY
1. Remove needle bearing and bearing races from high and low
reverse clutch hub.
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1. Needle bearing 2. Bearing race 3. Snap ring
4. High and low reverse clutch hub 5. Needle bearing 6. Snap ring
7. 1st one-way clutch 8. Rear sun gear 9. Seal ring
10. Mid sun gear
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AT-302
REPAIR FOR COMPONENT PARTS
Revision: August 20072004 QX56
a. Using a flat-bladed screwdriver, remove snap ring from rear sun
gear.
b. Remove 1st one-way clutch from rear sun gear.
5. Remove seal rings from mid sun gear.
INSPECTION
High and Low Reverse Clutch Hub Snap Ring, Rear Sun Gear Snap Ring

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the snap ring.
1st One-way Clutch

Check frictional surface for wear or damage.
CAUTION:
If necessary, replace the 1st one-way clutch.
Mid Sun Gear

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the mid sun gear.
Rear Sun Gear

Check for deformation, fatigue or damage.
CAUTION:
If necessary, replace the rear sun gear.
High and Low Reverse Clutch Hub

Check for deformation, fatigue or damage.
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