Accumulator: Service and Repair

Accumulator and 2-1 Manual Servo Replacement

Removal Procedure
1. Raise and support the vehicle.
2. Remove the filter.





3. Remove the accumulator bolts (131).
4. Remove the manual 2-1 band servo cover bolts (103).





5. Remove the accumulator assembly.





6. Remove the manual 2-1 band servo (106-116).
7. To disassemble, inspect and service the accumulator and 2-1 manual servo. Refer to 2-1 Manual Band Servo Disassemble in Transmission/Transaxle - 4T65-E Unit Repair.

Installation Procedure
1. If disassembled, assemble the 2-1 band servo. Refer to 2-1 Manual Band Servo Assemble in Transmission/Transaxle - 4T65-E Unit Repair.





2. Install the manual 2-1 band servo (106-116).





3. Install the accumulator assembly.





Notice: Refer to Fastener Notice in Service Precautions.

4. Install the manual 2-1 band servo cover bolts (103).
Tighten the bolts to 25 Nm (18 ft. lbs.).
5. Install the accumulator bolts (131).
Tighten the bolts to 11 Nm (97 inch lbs.).
6. Install the filter.
7. Lower the vehicle.

Important: It is recommended that transmission adaptive pressure (TAP) information be reset.

8. Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

Reset the TAP values. Refer to Transmission Adaptive Functions.