4L60/4L60-E Automatic Transmission

1. Inspect low and reverse piston for porosity or ring groove damage.

2. Inspect piston seals for nicks or cuts.

3. Inspect spring assembly for damage.

4. Inspect retainer ring for overstress.




5. Lubricate piston seals, then install seals on piston assembly.

6. Align piston with notch in bottom of case, then install piston in case. A new low and reverse clutch piston with a shorter apply skirt is in use in conjunction with the new low and reverse clutch assembly described previously.

7. Install spring assembly on piston with flat side of retainer upward.

8. Install clutch spring compressor tool, No. J-23327, and over spring assembly, then compress spring assembly past ring groove in case hub.

9. Install retainer ring into case hub ring groove, then remove clutch spring retainer.