1-2 Accumulator

4R70E/4R75E

1-2 Accumulator

Removal

1. WARNING: Before servicing a vehicle equipped with a fire suppression system, depower the system by following the procedure in Fire Suppression System. Failure to follow the instructions may result in serious personal injury Procedures.
Drain the transmission fluid and remove the transmission fluid pan and filter. For additional information, refer to Fluid Pan, Gasket and Filter Service and Repair.

2. Compress the 1-2 accumulator cover and remove the accumulator piston retaining ring.





3. NOTE: Note the location of the 1-2 accumulator springs for reference during assembly.
Remove the 1-2 accumulator.

1. Remove the 1-2 accumulator cover.

2. Remove the inner and outer lower 1-2 accumulator spring.

3. Remove the accumulator piston.

4. Remove the upper 1-2 accumulator spring.





Installation

1. Install the 1-2 accumulator.

1. Install the 1-2 accumulator upper spring.

2. Install the accumulator piston.

3. Install the inner and outer lower 1-2 accumulator spring.

4. Install the cover and seal assembly.





2. Compress the accumulator and install the accumulator piston retaining ring.





3. Install the transmission fluid pan and filter. For additional information, refer to Fluid Pan, Gasket and Filter Service and Repair.

4. WARNING: If the vehicle is equipped with a fire suppression system, repower the system. For important safety warnings and procedures, refer to Fire Suppression System. Failure to follow these instructions may result in serious personal injury Procedures.
If equipped with a fire suppression system, repower the system.