Removal

NOTE: To service the 1-2 or 2-3 accumulators or the overdrive or reverse servo assemblies use the following procedure:





1. Remove the main control valve body. This illustration shows the position of the overdrive servo, the reverse band servo piston and rod, 2-3 accumulator piston and the 1-2 accumulator piston.





2. Remove the 2-3 accumulator spring retainer.





3. Remove 2-3 accumulator piston.








4. Use Servo Piston Remover/Replacer T92P-70023-A to compress the overdrive servo piston return spring. Use snap-ring pliers to remove retainer ring.

NOTE: If tool is not available, extreme care must be taken. Spring pressure will force overdrive servo piston assembly out of case. Case bore damage may result from trying to pry on overdrive servo piston retainer.








5. Remove piston assembly. Remove overdrive servo piston return spring.
6. Use Servo Piston Remover/Replacer T92P-70023-A to contact the reverse band servo cover and compress return spring and remove accumulator piston retaining ring.





7. Remove reverse band servo cover, reverse band servo piston and rod and reverse band servo spring.

NOTE: The length of the rod attached to the piston is graded for three different lengths. Therefore, they should not be installed in any transmission other than the transmission from which they were removed.








8. Apply downward pressure on 1-2 accumulator cover using Servo Piston Remover/Replacer T92P-70023-A. Using snap-ring pliers, remove 1-2 accumulator piston retaining ring.





9. Remove accumulator piston and 1-2 accumulator spring.

NOTE: Carefully note the location of the 1-2 accumulator spring and assemble in the same positions. Some models may use two 1-2 accumulator springs. The accumulator piston may also vary with applications.