Disassembly
DISASSEMBLY1. Remove transmission from vehicle.
2. Install a suitable tail shaft housing plug to avoid contaminating internal components with cleaning solvents.
3. Clean exterior of transmission with suitable solvent or pressure washer.
4. Remove torque converter from transmission.
5. Remove throttle and shift levers from valve body manual shaft and throttle lever shaft.
6. Mount transmission in repair stand C-3750-B or similar type stand (Fig. 18).
7. Remove extension housing.
8. Remove fluid pan.
9. Remove park/neutral position switch and seal (Fig. 19).
10. Remove valve body.
11. Remove accumulator spring and piston (Fig. 20).
12. Measure input shaft end play (Fig. 21).
a. Attach Adapter 8266-7 to Handle 8266-8.
b. Attach dial indicator C-3339 to Handle 8266-8.
c. Install the assembled tool onto the input shaft of the transmission and tighten the retaining screw on Adapter 8266-7 to secure it to the input shaft.
d. Position the dial indicator plunger against a flat spot on the oil pump and zero the dial indicator.
e. Move input shaft in and out and record reading.
13. Loosen front band adjusting screw lock nut (Fig. 22) 4 - 5 turns. Then tighten band adjusting screw until band is tight around front clutch. This prevents front/rear clutches from coming out with pump and possibly damaging clutch or pump components.
14. Remove oil pump bolts.
15. Thread bolts of Slide Hammer Tools C-3752 into threaded holes in pump body flange (Fig. 23).
16. Bump slide hammer weights outward to remove pump and reaction shaft support assembly from case (Fig. 23).
17. Loosen front band adjusting screw until band is completely loose (Fig. 22).
18. Squeeze front band together and remove band strut (Fig. 24).
19. Remove front and rear clutch units as an assembly Grasp input shaft, hold clutch units together and remove them from case (Fig. 25).
20. Lift front clutch off rear clutch (Fig. 26). Set clutch units aside for overhaul.
21. Remove output shaft thrust washer from output shaft (or from rear clutch hub) (Fig. 27).
22. Remove output shaft thrust plate and washer from output shaft hub (Fig. 27).
23. Remove front band from case (Fig. 28).
24. Remove extension housing from transmission case.
25. Remove governor body and park gear from output shaft.
26. Remove output shaft and planetary geartrain as assembly (Fig. 29). Support geartrain with both hands during removal. Do not allow machined surfaces on output shaft to become nicked or scratched.
27. Loosen rear band adjusting screw 4 - 5 turns (Fig. 30).
28. Remove snap-ring that secures low-reverse drum to rear support hub, however do not remove drum (Fig. 31).
29. Remove bolts attaching rear support to transmission case and pull support from low-reverse drum (Fig. 32).
30. Remove bolts attaching overrunning clutch cam and low-reverse drum to transmission case (Fig. 33).
31. Using snap-ring plier, pull rear band anchor pin (located on the servo side of the rear support) from transmission case.
32. Remove rear band and link from transmission (Fig. 34).
33. Separate link from rear band (Fig. 35).
34. If necessary remove front and rear band servo levers. All transmission components can be serviced without removing the levers.
a. Using a 1/4 inch drive extension remove front band reaction pin access plug (Fig. 36).
b. Remove front band reaction pin with pencil magnet. Pin is accessible from converter housing side of case (Fig. 37).
c. Remove front band lever (Fig. 38).
d. Using snap-ring plier, pull rear band lever pivot from transmission case (Fig. 39).
e. Separate rear band servo lever from transmission.
35. Compress front servo rod guide about 1/8 inch with large C-clamp and Tool C-4470, or Spring Compressor Tool C-3422-B (Fig. 40).
36. Remove front servo rod guide snap-ring (Fig. 40). Exercise caution when removing snap-ring. Servo bore can be scratched or nicked if care is not exercised.
37. Remove compressor tools and remove front servo rod guide, spring and servo piston.
38. Compress rear servo spring retainer about 1/16 inch with C-clamp and Tool C-4470 or SP-5560 (Fig. 41). Valve Spring Compressor C-3422-B can also be used to compress spring retainer.
39. Remove rear servo spring retainer snap-ring. Then remove compressor tools and remove rear servo spring and piston.