Air INFINITI QX56 2004 Factory Service Manual

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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REPAIR FOR COMPONENT PARTS
AT-301
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Revision: August 20072004 QX56
2. Using a snap ring pliers, remove snap ring from mid sun gear
assembly.
CAUTION:
Do not expand snap ring excessively.
3. Remove high and low reverse clutch hub from mid sun gear
assembly.
a. Remove needle bearing from high and low reverse clutch hub.
4. Remove rear sun gear assembly from mid sun gear assembly.
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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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REPAIR FOR COMPONENT PARTS
AT-303
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Revision: August 20072004 QX56
CAUTION:
If necessary, replace the high and low reverse clutch hub.
ASSEMBLY
1. Install seal rings from mid sun gear.
CAUTION:

Do not reuse seal rings.

Apply petroleum jelly to seal rings.
2. Install 1st one-way clutch to rear sun gear.
CAUTION:
Apply petroleum jelly to 1st one-way clutch.
3. Using a flat-bladed screwdriver, install snap ring to rear sun
gear.
4. Install rear sun gear assembly to mid sun gear assembly.
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AT-304
REPAIR FOR COMPONENT PARTS
Revision: August 20072004 QX56
5. Install needle bearing to high and low reverse clutch hub.
CAUTION:

Take care with the direction of needle baering. Refer to
AT- 2 7 1 , "
Locations of Adjusting Shims, Needle Bearings,
Thrust Washers and Snap Rings" .

Apply petroleum jelly to needle bearing.
6. Install high and low reverse clutch hub to mid sun gear assem-
bly.
7. Using a snap ring pliers, install snap ring to mid sun gear
assembly.
CAUTION:
Do not expand snap ring excessively.
8. Check operation of 1st one-way clutch.
a. Hold mid sun gear and turn rear sun gear.
b. Check 1st one-way clutch for correct locking and unlocking
directions.
CAUTION:
If not as shown in illustration, check installation direction of
1st one-way clutch.
9. Install needle bearing and bearing races to high and low reverse
clutch hub.
CAUTION:

Apply petroleum jelly to needle bearing and bearing
races.

Take care with order of bearing races.
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REPAIR FOR COMPONENT PARTS
AT-305
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Revision: August 20072004 QX56
High and Low Reverse ClutchUCS002JO
COMPONENTS
DISASSEMBLY
1. Remove bearing race from high and low reverse clutch drum.
2. Using a flat-bladed screwdriver, remove snap ring from high and
low reverse clutch drum.
3. Remove drive plates, driven plates and retaining plate from high
and low reverse clutch drum.
INSPECTION

Check the following, and replace high and low reverse clutch assembly if necessary.
High and Low Reverse Clutch Snap Ring

Check for deformation, fatigue or damage.
High and Low Reverse Clutch Drive Plates

Check facing for burns, cracks or damage.
1. High and low reverse clutch drum 2. Driven plate 3. Retaining plate
4. Snap ring 5. Drive plate 6. Bearing race
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AT-306
REPAIR FOR COMPONENT PARTS
Revision: August 20072004 QX56
High and Low Reverse Clutch Retaining Plate and Driven Plates

Check facing for burns, cracks or damage.
ASSEMBLY
1. Install drive plates, driven plates and retaining plate in high and
low reverse clutch drum.
CAUTION:
Take care with the order of plates.
2. Using a flat-bladed screwdriver, install snap ring in high and low
reverse clutch drum.
3. Install bearing race to high and low reverse clutch drum.
CAUTION:
Apply petroleum jelly to bearing race.
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REPAIR FOR COMPONENT PARTS
AT-307
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Revision: August 20072004 QX56
Direct ClutchUCS002J P
COMPONENTS
DISASSEMBLY
1. Using a flat-bladed screwdriver, remove snap rings from direct
clutch drum.
2. Remove drive plates, driven plates and retaining plate from
direct clutch drum.
INSPECTION

Check the following, and replace direct clutch assembly if necessary.
Direct Clutch Snap Rings

Check for deformation, fatigue or damage.
Direct Clutch Drive Plates

Check facing for burns, cracks or damage.
Direct Clutch Retaining Plate and Driven Plates

Check facing for burns, cracks or damage.
1. Direct clutch drum 2. Driven plate 3. Retaining plate
4. Snap ring 5. Drive plate
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AT-308
REPAIR FOR COMPONENT PARTS
Revision: August 20072004 QX56
ASSEMBLY
1. Install drive plates, driven plates and retaining plate in direct
clutch drum.
CAUTION:
Take care with the order of plates.
2. Using a flat-bladed screwdriver, install snap rings in direct clutch
drum.
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