Band Apply Servo: Service and Repair

2-4 Servo

Tools Required
^ J29714-A Servo Cover Depressor

Removal Procedure





1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
2. Install a transmission jack and remove the transmission mount.
3. Lower the transmission.
4. Remove the oil pan bolt below and to the left of the 2-4 servo cover.
5. Install the J29714-A to the oil pan rail.
6. Tighten the bolt on the J29714-A to compress the servo cover.





7. Remove the servo cover retaining ring.
8. Loosen the bolt on the J29714-A to release tension on the servo cover.





9. Remove the servo cover and O-ring seal. If the cover is hung up on the seal, use a pick (2) to pull and stretch the seal (1) out of the groove. Cut and remove the O-ring seal before removing the cover.





10. Remove the 2-4 servo from the transmission.
11. Inspect the 4th apply piston, 2-4 servo converter, 2nd apply piston, and the servo piston inner housing for the following defects:
^ Cracks
^ Scoring
^ Burrs and nicks

Installation Procedure
1. Install new seals on the servo pistons and the servo cover.





2. Install the 2-4 servo to the transmission.
3. Install the servo cover and O-ring seal.





4. Tighten the bolt on the J29714-A to compress the servo cover.
5. Install the servo cover retaining ring.
6. Loosen the bolt on the J29714-A to release tension on the servo cover.
7. Remove the J29714-A from the oil pan rail.

8. Notice:
Refer to Fastener Notice in Service Precautions.

Install the oil pan bolt below the 2-4 servo cover.

Tighten the oil pan bolt to 12 Nm (106 inch lbs.).

9. Raise the transmission.
10. Install the transmission mount.
11. Remove the transmission jack.
12. Lower the vehicle.
13. Fill the transmission to the proper level with DEXRON VI transmission fluid. Refer to Transmission Fluid Checking Procedure.

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

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.