Center Support Assembly: Disassembly
- Remove snap ring from end of sun gear shaft. Remove planetary sun gear with No. 1 one-way clutch from center support. Repeat procedure used in direct clutch disassembly to check No. 1 brake piston stroke. Piston stroke should be .031-.052" (.78-1.32 mm). If piston stroke is not as specified, inspect discs. See Fig 1.
- Remove snap ring from front of center support. Remove retaining plate, disc(s) and plate(s). See Fig 2. Using appropriate spring compressor, compress piston return spring. Remove snap ring. Remove piston return spring.
- Hold No. 1 brake piston and apply air pressure to center support oil hole to remove No. 1 brake piston. See Fig 1. Remove "O" rings and oil sealing rings. Turn center support over.
- Check No. 2 brake piston stroke. Repeat test procedure used previously for checking piston stroke on No. 1 brake piston. See Fig 3. Piston stroke should be .040-.065" (1.02-1.65 mm). If piston stroke is not as specified, inspect discs. Remove rear snap ring, retaining plate, discs and plates. Note location and number of components. See Fig 2.
- Using appropriate spring compressor and press, compress piston return spring. Remove snap ring. Remove piston return spring. Hold No. 2 brake piston and apply air pressure to center support oil hole to remove No. 2 brake piston. See Fig 3. Remove "O" rings.
- Hold No. 1 one-way clutch and rotate planetary gear. Sun gear should rotate freely in counterclockwise direction and lock in clockwise direction. See Fig 4. If component does not test as described, one-way clutch requires replacement. Loosen staked part of rear side retainer. Remove No. 1 one-way clutch and 2 retainers from outer race. Using a pin punch and hammer, remove front side retainer. Remove oil sealing rings from sun gear.
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Courtesy of MAZDA MOTORS CORP.
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.