Third Clutch and Sprag Unit
THIRD CLUTCH AND SPRAG UNIT
DISASSEMBLY
1. Retaining ring (Fig. 7A-69)
^ Place the third clutch housing and intermediate shaft assembly upright, using the overdrive internal gear as a support.
^ Locate the end of the sprag retaining ring. Compress near the end, using a screwdriver through the side slot and slide one tool blade between ring and drum to hold the ring clear of the groove.
^ Repeat with a second tool blade near the other end of the retaining ring.
^ Repeat with a third tool blade opposite the first two.
^ Repeat with two further blades equally spaced apart.
Third clutch retaining ring compressor: J-38450
2. Input sun gear assembly
^ Pull the input sun gear assembly unit until the sprag retaining ring clears the ring groove.
3. Retaining washer
4. Bearing
5. Thrust washer
6. Clutch plates
7. Third clutch drum
INSPECTION AND REPAIR
Visual check
^ If any damage, deformation or local wear is found in a bearing, thrust washer, clutch plates or third clutch drum, replace it.
REASSEMBLY
7. Third clutch drum
6. Clutch plates
^ Place third clutch housing and intermediate shaft assembly upright, using the overdrive internal gear as a support.
^ Install third clutch spring cushion plate, bevel face down.
^ Install third clutch plates into clutch housing. Start with the steel clutch plate and alternate with lined plates.
5. Thrust washer
4. Bearing
3. Retaining washer
2. Input sun gear assembly (Fig. 7A-70)
1. Retaining ring
^ Fully engage the sprag assembly hub splines into the third clutch inner tangs. Simultaneously rotate the outer sprag race to engage into the third clutch housing.
^ Install a tool blade at each extremity of the retaining ring.
^ Compress the retaining ring with a screwdriver opposite the tool blades while pushing down on the outer sprag race.
^ Engage retaining ring into groove.
^ Remove tool blades
THIRD CLUTCH DISASSEMBLY
1. Retaining ring (Fig. 7A-72)
^ Compress spring seat using the tool.
NOTE: Do not over-stress the springs and seat. This will cause damage to the spring seat.
^ Remove retaining ring.
^ Release the spring seat.
NOTE: Do not let the spring seat catch in the ring groove.
Spring compressor: J-23075
Adapter: J-23075-12
2. Spring seat
3. Springs
4. Piston
INSPECTION AND REPAIR
Visual check
^ If any damage, deformation or local wear is found in a retaining ring, return spring, piston seals or spring seat, replace it.
Operation check
^ Shake piston and listen for check ball movement. Replace piston if check ball is missing or falls out.
REASSEMBLY
4. Piston (Fig. 7A-73)
^ The lip of the seals must point toward the front of the transmission. Lubricate the lip seal with transmission fluid.
^ Install piston assembly into the third clutch drum. Use installer to protect the outer seal during installation.
Third clutch piston installer: J-23084
3. Springs
2. Spring seat
1. Retaining ring
^ Place retaining ring onto spring seat.
^ Compress the piston springs, using the piston spring compressor.
CAUTION: Do not over-stress the springs and seat. Do not let the spring seat catch in the ring groove. This may cause damage to the spring seat.
^ Install spring seat retaining ring.
^ Remove the piston spring compressor. Spring compressor: J-23075 Adapter: J-23075-12
SPRAG UNIT
DISASSEMBLY
1. Sprag outer race
2. Sprag assembly
^ Remove sprag outer race and sprag assembly from third clutch hub and sun gear assembly.
3. Sun gear assembly
INSPECTION AND REPAIR
Visual check
^ If any damage, deformation or local wear is found in a sun gear, sprag assembly or sprag outer race, replace it.
REASSEMBLY
3. Sun gear assembly
2. Sprag assembly
^ Install sprag assembly onto the sun gear.
NOTE: Flared shoulder of the sprag cage faces the sun gear. This procedure must be followed exactly to be sure that the sprag assembly is installed properly.
1. Sprag outer race (Fig. 7A-75)
^ Install outer sprag race assembly over the sprag cage assembly.
^ Place third clutch hub and sun gear assembly on a flat surface, sun gear facing up. Place sprag outer race and sprag assembly over the sun gear assembly, push down and turn the input sun counterclockwise at the same time.
NOTE: Check correct rotation by holding the sun gear in your left hand and turning the outer race. The outer sprag race should turn freely towards you and lock turning away from you.