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. Place transmission in vertical position.
6. Measure and record the input shaft end-play measurement.





7. Mount transmission in repair stand C-3750-B, or equivalent or similar type stand.
8. Remove fluid pan and filter.





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





11. Remove accumulator outer spring, piston and inner spring. Note position of piston and springs for assembly reference. Remove and discard piston seals if worn or cut.
12. Remove pump oil seal with suitable pry tool or slide-hammer mounted screw.





13. Remove front band lever pin access plug. Use square end of 1/4 inch drive extension to remove plug as shown.
14. Remove oil pump and reaction shaft support assembly as follows:





a. Tighten front band adjusting screw until band is tight around front clutch retainer. This will prevent retainer from coming out with pump and possibly damaging clutch or pump components.
b. Remove oil pump bolts.





c. Thread Slide Hammer Tools C-3752, or equivalent into threaded holes in flange of oil pump housing.





d. Remove oil pump and reaction shaft support by bumping slide hammers outward alternately to pull pump from case.





15. Remove oil pump gasket. Note gasket position in case for assembly reference.
16. Loosen front band adjusting screw until band is completely loose.





17. Remove front band strut and anchor.





18. Squeeze front band together slightly and slide band over front clutch retainer and out of case.





19. Remove front and rear clutch assemblies as a unit. Set assemblies aside for disassembly and inspection after removal.





20. Remove front band reaction pin and lever. Start pin through lever and out of case bore with drift or punch. Then use pencil magnet to withdraw pin completely.





21. Remove intermediate shaft thrust washer. Triangular shaped washer will either be on shaft pilot hub or in rear clutch retainer.





22. Remove thrust plate from intermediate shaft hub.





23. Remove intermediate shaft-planetary gear-train assembly. Set assembly aside for disassembly and inspection later in procedure.
24. If overdrive unit is not to be serviced, install Alignment Shaft 6227-2, or equivalent into the overdrive unit to prevent misalignment of the overdrive clutches during service of main transmission components.
25. Loosen rear band locknut and loosen adjusting screw 3-4 turns.





26. Remove snap ring that retains low-reverse drum on overdrive piston retainer hub.





27. Slide low-reverse drum and thrust washer off piston retainer hub and out of rear band.





28. Note that overrunning clutch race will remain on splines of low-reverse drum after removal. The race is a permanent press fit on the hub splines. Do not attempt to remove the race.





29. Remove overrunning clutch assembly. Assembly can be removed without displacing rollers and springs if care is exercised. Note position of rollers and springs for assembly reference.





30. Remove rear band adjusting lever, reaction lever and pin.
31. Remove strut from rear band. Keep strut with levers and pin for cleaning, inspection and assembly reference.





32. Remove rear band and link.





33. Compress front servo rod guide with large C-clamp and Tool C-4470, or Compressor Tool C-3422-B, or equivalents. Compress guide only enough to permit snap ring removal (about 1/8 inch).
34. Remove servo piston snap ring. Unseat one end of ring. Then carefully work removal tool around back of ring until free of ring groove. Exercise caution when removing snap ring. Servo bore can be scratched or nicked if care is not exercised.
35. Remove tools and remove servo piston and spring.





36. Compress rear servo piston with C-clamp and Tool C-4470, or Valve Spring Compressor C-3422-B, or equivalents. Compress servo spring retainer only enough to permit snap ring removal.
37. Remove servo piston snap ring. Start one end of ring out of bore. Then carefully work removal tool around back of snap ring until free of ring groove. Exercise caution when removing snap ring. Servo bore can be scratched or nicked if care is not exercised.
38. Remove tools and remove rear servo retainer, spring and piston assembly.