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-.068" (.78-1.73 mm). If piston stroke is not as specified, inspect discs. See Fig 1 .
Remove snap ring from front of center support. Remove flange, discs and plates. See Fig 2 . Using appropriate spring compressor and press, compress return spring assembly. Remove snap ring. Remove return spring assembly.
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 seal 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-.089" (1.01-2.25 mm). If piston stroke is not as specified, inspect discs. Remove rear snap ring, flange, discs and plates. Note location and number of components. See Fig 2 .
Using appropriate spring compressor and press, compress return spring assembly. Remove snap ring. Remove return spring assembly. 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 sun 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. See Fig 2 . Using a pin punch and hammer, remove front side retainer. Remove oil seal rings from sun gear.
Remove thrust washers from front planetary gear. See Fig 5 . Hold one-way clutch inner race and rotate planetary gear. Planetary gear should rotate freely in counterclockwise direction and lock in clockwise direction. See Fig 6 . Remove one-way clutch inner race. Remove retaining ring, one-way clutch and nylon thrust washer. See Fig 5 .

Fig 1: Measuring No. 1 Brake Piston Stroke

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Fig 2: Exploded View Of Center Support Assembly Components

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Fig 3: Measuring No. 2 Brake Piston Stroke

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Fig 4: Checking No. 1 One-Way Clutch Operation

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Fig 5: Exploded View Of Front Planetary Gear & No. 2 One-Way Clutch

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Fig 6: Checking No. 2 One-Way Clutch Operation

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