Tools Required

1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Lower the transmission if needed for clearance. Refer to Transmission Replacement .
3. Install the J 29714-A .



4. Tighten the bolt in order to compress the servo cover.
5. Remove the servo cover retaining ring.
6. Remove the J 29714-A .



7. Remove the servo cover and the O-ring seal. If the servo cover seems to be hung up on the seal, cut and remove the O-ring seal before removing the cover.
8. Remove the 2-4 servo assembly.

1. Remove the following parts:

•	The 4th apply piston

•	The servo return spring




2. Remove the following parts:

•	The retainer ring

•	The washer

•	The spring

•	The 2nd apply piston pin




3. Install the J 22269-01 in order to compress the second apply piston.
4. Remove the second apply piston retaining ring.
5. Remove the servo cushion spring retainer and the servo cushion spring.



6. Remove the seals from the cover, the housing, and the pistons.

Important: Check the case servo bore for damage and sharp edges.

7. Clean all the parts using solvent.
8. Air dry all the parts.
9. Inspect the pistons for porosity and damage.
10. Inspect the seal grooves for damage.
11. Inspect the cover for porosity and damage.
12. Inspect for nicks, cuts, and binding in the seal grooves. If damage is found, check for the cause of the damage.
13. Inspect the springs for kinks and bending.
14. Inspect the pin for wear and burrs.

1. Install the band apply pin and the J 33037 .
2. Install the servo cover retaining ring to secure the tool.



3. Apply 11 N·m (98 lb in) torque. If the white line appears in the gauge slot, the pin length is correct.
4. If the white line is not seen in the slot, replace the pin using the following pin identification:

•	One groove, pin length 65.82--66.12 mm (2.59--2.60 in)

•	Two grooves, pin length 67.23--67.53 mm (2.65--2.66 in)

•	No grooves, pin length 68.64--68.94 mm (2.70--2.71 in)

5. Remove the pin and the J 33037 Band Apply Pin Tool.



6. Check the 2nd apply piston and the housing dimension.
7. Measure the piston dimension
8. Measure the housing dimension
9. Check the table for the transmission and piston/housing specifications. Refer to 2-4 Band Servo Piston Pin Selection .

1. Install new seals on all the 2-4 servo pistons and the cover.



2. Install the servo cushion spring and the cushion spring retainer in the 2nd apply piston. Use the J 22269-01 in order to compress the second apply piston.
3. Install the second apply piston retaining ring.



4. Install the following parts:

•	The 2nd apply piston pin

•	The spring

•	The washer

•	The retainer ring




5. Install the following parts:

•	The servo return spring

•	The 4th apply piston

Important: It is recommended that the 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 the TAP values. Transmission performance may be affected as new TAP values are learned.
6. Reset the TAP values. Refer to Adapt Function .