4L60/4L60-E Automatic Transmission

1. Install band apply pin tool No. J-33037, or equivalent, with apply pin, then torque assembly to 100 in. lbs.




2. If pin is the correct length, at least part of the white line will appear in the window. If white line does not appear, select another pin until correct one is obtained.

3. Inspect pistons for porosity and ring groove damage.

4. Inspect cover for porosity and damage.

5. Inspect seals for freeness in the seal groove, nicks or cuts.

6. Inspect springs for distortion.

7. Inspect pin for wear or burrs.

8. Inspect servo bore in case for any wear or sharp edges which may cut the servo seals.




9. Measure piston dimension A and housing dimension B. If measurement is not as specified, replace piston or housing as required.




10. Install cushion spring into 2nd apply piston, then the cushion spring retainer on the cushion spring.




11. Install piston compressor tool No. J-22269-01, or equivalent, and compress retainer past snap ring groove in 2nd apply piston.

12. Install retainer ring, then the 2nd apply piston onto the apply pin. Ensure retainer goes toward shoulder of pin.

13. Install servo apply pin spring on the pin, then the servo apply pin washer and retaining clip.

14. Install inner and outer seals on 2nd apply piston. Retain in position using suitable grease.

15. Install apply pin seals on apply pin. Retain in position using suitable grease.

16. Install O-ring seal on servo piston housing.

17. Install servo piston inner housing on the 2nd apply piston.

18. Install seal ring onto 4th apply piston, then the 4th apply piston onto apply pin.

19. Install return spring on pin, then the

servo piston assembly into the servo bore.

20. Install O-ring seal on servo cover. Lubricate seal with transmission fluid.

21. Install servo cover into servo bore.




22. Using servo cover compressor tool No. J-29714 or equivalent, compress servo cover then install retainer ring.