2004 INFINITI QX56 Revers

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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AT-310
ASSEMBLY
Revision: August 20072004 QX56
6. Install retaining pin into the manual plate and manual shaft.
a. Fit pinhole of the manual plate to pinhole of the manual shaft
with a pin punch.
b. Use a hammer to tap the retaining pin into the manual plate.
CAUTION:

Drive retaining pin to 2±0.5 mm over the manual
plate.

Do not reuse retaining pin.
7. Install retaining pin into the transmission case and manual shaft.
a. Fit pinhole of the transmission case to pinhole of the manual
shaft with a pin punch.
b. Use a hammer to tap the retaining pin into the transmission
case.
CAUTION:

Drive retaining pin to 5±1 mm over the transmis-
sion case.

Do not reuse retaining pin.
8. Install O-rings to servo assembly.
CAUTION:

Do not reuse O-rings.

Apply petroleum jelly to O-rings.
9. Install return spring to servo assembly.
10. Install servo assembly in transmission case.
11. Using snap ring pliers, install snap ring to transmission case.
12. Install D-rings in reverse brake piston.
CAUTION:

Do not reuse D-rings.

Apply ATF to D-rings.
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ASSEMBLY
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Revision: August 20072004 QX56
13. Install reverse brake piston in transmission case.
14. Install needle bearing to drum support edge surface.
CAUTION:
Apply petroleum jelly to needle bearing.
15. Install seal rings to drum support.
CAUTION:

Do not reuse seal rings.

Apply petroleum jelly to seal rings.
16. Install spring retainer and return spring in transmission case.
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AT-312
ASSEMBLY
Revision: August 20072004 QX56
17. Set SST on spring retainer and install snap ring (fixing spring
retainer) in transmission case while compressing return spring.
CAUTION:
Securely assemble them using a flat-bladed screwdriver so
that snap ring tension is slightly weak.
18. Install reverse brake drive plates, driven plates and dish plate in
transmission case.
CAUTION:
Take care with the order and direction of plates.
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