Coast Clutch Assembly: Assembly
WARNING: This page is about a different variant/trim than selected.
- Inspect the new coast clutch piston and seal assembly for damage and the check ball for free movement.
- Using the special tool, install the coast clutch piston.
- Install the coast clutch return spring.
- Using the special tool, install the coast clutch return spring retaining ring.
- Inspect the OWC for cracks and damaged splines. When installed correctly, the internal splined portion of the OWC should rotate counterclockwise and lock when rotated clockwise. If any damage is found or if it does not rotate in the correct direction, install a new OWC.
- Install the coast clutch pressure plate OWC (mechanical diode) assembly and the clutch plates starting with the separator plate.
Item Part Number Description 1 7B442 Steel clutch plates (externally splined) 2 7B164 Friction clutch plates (internally splined) 3 7A089 Mechanical diode (OWC) - Install the retaining ring.
- Check the stack-up clearance.
- Using a feeler gauge, measure the stack-up clearance in 3 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.
- Assemble the overdrive planet to the coast clutch hub. Tighten the bolts in the sequence shown in 2 stages.
- Stage 1: Tighten to 25 Nm (18 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Install the coast clutch hub assembly into the coast clutch cylinder assembly.
- Install the No. 4 thrust bearing and washer.
- Install the overdrive ring gear to the center shaft and install the retaining ring.
- Install the No. 5 thrust bearing.
NOTE:
The OWC mechanical diode is also the coast clutch pressure plate.
NOTE:
Gas applications use a unique mechanical diode from diesel applications.
NOTE:
Inspect all separator and friction plates for damage. If any damage is found to any of the plates, install new friction and separator plates.
NOTE:
When installing the OWC (mechanical diode), the words THIS SIDE UP should be visible.
NOTE:
When installing the retaining ring, make sure that it is completely seated in the groove with the tips down against the hub.