Operation CHARM: Car repair manuals for everyone.

Disassembly

1. Drain fluid from transmission.
2. Clean exterior of transmission with suitable solvent or pressure washer.
3. Remove torque converter from front of transmission.
4. Remove throttle and shift levers from valve body manual shaft and throttle lever shaft.





5. Mount transmission in repair stand C-3750-B or similar type stand.
6. Remove extension housing.
7. Remove fluid pan.





8. Remove [1][2]park/neutral position switch and seal.
9. Remove valve body.





10. Remove accumulator spring and piston.





11. Remove front band reaction pin access plug. Plug is accessible through converter housing. Use 1/4 inch drive extension to remove plug as shown.





12. Loosen front band adjusting screw lock nut 4-5 turns. Then tighten band adjusting screw until band is tight around front clutch retainer. This prevents front/rear clutches from coming out with pump and possibly damaging clutch or pump components.
13. Remove oil pump bolts.





14. Thread bolts of Slide Hammer Tools C-3752, or equivalent into threaded holes in pump body flange.
15. Bump slide hammer weights outward to remove pump and reaction shaft support assembly from case.
16. Loosen front band adjusting screw until band is completely loose.





17. Squeeze front band together and remove band strut.





18. Remove front band reaction pin with pencil magnet. Pin is accessible from converter housing side of case.





19. Remove front band lever.
20. Slide front band rearward and onto driving shell. Band will not be removed until after front/rear clutch removal.





21. Remove front and rear clutch units as assembly. Grasp input shaft, hold clutch units together and remove them from case.





22. Lift front clutch off rear clutch. Set clutch units aside for overhaul.
23. Remove output shaft thrust washer from output shaft, or from rear clutch hub.





24. Remove output shaft thrust plate from output shaft hub.





25. Slide front band off driving shell and remove band from case.
26. Remove governor body and park gear from output shaft.





27. Remove output shaft and planetary gear-train as assembly. Support gear-train with both hands during removal. Do not allow machined surfaces on output shaft to become nicked or scratched.





28. Loosen rear band adjusting screw 4-5 turns.





29. Remove snap ring that secures low-reverse drum to rear support hub, however do not remove drum at this time.





30. Remove rear band upper and lower reaction pins with parallel jaw snap ring pliers. Spread plier jaws in pin bore to grip pinch Then twist and pull pins to remove them as shown.
31. Remove rear band lever and strut.





32. Mark position of rear support for assembly reference. Use scriber or center punch to mark case and support.





33. Remove rear support bolts and remove support from low-reverse drum and case. Keep rear support bolts together for assembly reference.





34. Remove bolts attaching overrunning clutch cam to case.
35. Remove low-reverse drum and overrunning clutch as assembly. Slide drum and clutch through rear band and out of case. Set drum and clutch assembly aside for cleaning and inspection.
36. Remove rear band from case.





37. Compress front servo rod guide about 1/8 inch with Spring Compressor Tool C-3422-B, or equivalent.
38. Remove front servo rod guide snap ring. Exercise caution when removing snap ring. Servo bore can be scratched or nicked if care is not exercised.
39. Remove compressor tools and remove front servo rod guide, spring and servo piston.
40. Compress rear servo spring retainer about 1/16 inch with Spring Compressor Tool C-3422-B, or equivalent.
41. Remove rear servo spring retainer snap ring. Then remove compressor tools and remove rear servo spring and piston.