Coast Clutch Assembly

Special Tools:

Disassembly





1. For vehicles equipped with Power Take-Off (PTO) remove the retaining ring.





2. For vehicles equipped without Power Take-Off (PTO) remove the retaining ring.





3. Remove the coast clutch pressure plate and the clutch plates.





4. Inspect the overdrive one-way clutch for damage to the plastic cage, springs, and rollers. Replace as necessary. Remove the overdrive one-way clutch.





5. Remove the coast clutch return spring using the Clutch Spring Compressor.
1. Remove the retaining ring.
2. Remove the return spring.





6. Remove the coast clutch piston and seal assembly.

7. Note: If the teeth and or bushing are damaged, the sun gear will need to be replaced.





If required, use an arbor press to remove the sun gear.

8. Note: If the coast clutch cylinder shows any signs of damage it will need to be replaced.





Inspect the coast clutch assembly.
1. Inspect the bushing.
2. Inspect the No. 1thrust washer.
3. Inspect the lube hole.





9. Inspect the one-way clutch inner race.
1. Inspect the coast clutch hub overdrive OWC inner race.
2. Inspect all the sealing surfaces.
3. Inspect the sun gear splines.

10. Note: Inspect the bearing for damage. If the bearing is damaged install a new coast clutch cylinder.





For vehicles equipped with Power Take-Off (PTO) remove and discard the bearing.

11. Note: If the coast clutch cylinder shows any signs of damage, install a new coast clutch cylinder.





For vehicles equipped with Power Take-Off (PTO) inspect the one-way clutch inner race.
1. Inspect the coast clutch hub inner race.
2. Inspect the power take-off ring gear teeth for damage.
3. Inspect all sealing surfaces, and lube hole.
4. Inspect the sun gear splines.

Assembly





1. If the sun gear was removed, Install the sun gear.

2. Note: If the coast clutch piston and seal assembly is damaged it will need to be replaced.





Inspect the coast clutch piston and seal assembly for damage and the check ball for free movement.





3. Using the Clutch Assembly Loading Fixture, install the coast clutch piston.





4. Install the coast clutch retaining ring using the Clutch Spring Compressor.
1. Install the return spring.
2. Install the retaining ring.





5. Make sure that the one-way clutch is locked in place. Turn counterclockwise to lock in place. Install the overdrive one way clutch.





6. Install the coast clutch pressure plate and the clutch plates.





7. Install the retaining ring.





8. Check the stack-up clearance.
1. Using a feeler gauge, measure the stack up clearance in three places, 120 degrees apart, between the snap ring and the coast clutch pressure plate.
- If the clearance is not within specification, install the correct coast clutch pressure plate retainer snap ring and recheck the clearance.





9. Assemble the coast clutch assembly, overdrive ring gear and planet assembly, center shaft assembly and install the coast clutch removal/installation tool for later use during assembly.