Disassembly

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






5. Remove bolts attaching overdrive unit to transmission case (Fig 1).






6. Loosen overdrive unit. Use pry tool to start overdrive unit off intermediate shaft and transmission case. Position pry tool between flange on over-drive case and transmission rear servo boss (Fig. 2).






7. Work overdrive unit rearward and off transmission intermediate shaft (Fig. 3).






(a) If overdrive unit does not require service, insert Alignment Tool 6227-2 in overdrive unit over-running clutch and planetary gear to maintain spline alignment (Fig. 4). If clutch and gear splines rotate out of alignment, overdrive unit will have to be disassembled in order to realign splines.
(b) If overdrive unit does requires service, refer to Overdrive unit Overhaul section. Overdrive Assembly






8. Remove thrust plate from overdrive piston (Fig. 5).






9. Remove overdrive piston from retainer (Fig. 6).






10. Remove overdrive piston thrust bearing (Fig. 7).






11. Mount transmission unit on Repair Stand C-3750-B, or support transmission with wood blocks.






12. Remove pump oil seal with Special Tool C-3861 (Fig. 8). Be sure to tighten tool threads completely into seal before using puller bolt to withdraw seal.
















13. Remove oil pan bolts and remove pan (Fig. 9) and gasket (Fig. 10). Oil pan magnet can be removed or left in pan as needed (Fig. 11). Exercise care when removing pan to avoid distorting or bending pan flange.






14. Remove [1][2]park/neutral position switch (Fig. 12). If switch gasket is in good condition, retain gasket and keep it with switch.






15. Remove fluid filter attaching screws and remove filter (Fig. 13). Keep filter screws separate. They are longer than valve body screws.






16. Remove hex head valve body attaching bolts (Fig. 14). A total of 10 hex head bolts are used to secure valve body to case.






17. Lift valve body upward. Push solenoid connector and manual lever shaft out of case. Then raise valve body, guide park rod out of case and remove valve body (Fig. 15). Do not use boost valve tube to lift valve body. Set valve body aside for disassembly, cleaning and inspection.






18. Remove accumulator outer spring, piston and inner spring (Fig. 16). Note position of piston and springs for assembly refi~rence. Remove and discard piston seals if worn or cut.






19. Remove front band lever pin access plug (Fig. 17). Use square end of 1.14 in. drive extension to remove plug as shown.






20. Remove oil pump and reaction shaft support assembly as follows:






(a) Tighten front band adjusting screw until band is tight around front clutch retainer (Fig. 18). This will prevent retainer from coming out with pump and possibly damaging clutch or pump components.
(b) Remove oil pump bolts.






(c) Thread Slide F[ammer Tools C-3752 into threaded holes in flange of oil pump housing (Fig.19).






(d) Remove oil pump and reaction shaft support by bumping slide hammers outward alternately to pull pump from case (Fig. 20).






21. Remove oil pump gasket (Fig. 21). Note gasket position in case for assembly reference.
22. Loosen front band adjusting screw until band is completely loose.






23. Remove front band strut and anchor (Fig. 22).






24. Squeeze front band together slightly and slide band over front clutch retainer and out of case (Fig.23).






25. Remove front and rear clutch assemblies as a unit (Fig. 24). Set assemblies aside for disassembly and inspection after removal.






26. Remove front band pivot pin and lever. Start pin through lever and out of case bore with pin punch. Then use pencil magnet to withdraw pin completely (Fig. 25).






27. Remove intermediate shaft thrust washer. Triangular shaped washer will either be on shaft pilot hub or in rear clutch retainer (Fig. 26).






28. Remove thrust plate from intermediate shaft hub (Fig. 27).






29. Remove intermediate shaft-planetary geartrain assembly (Fig. 28). Set assembly aside for disassembly and inspection later in procedure.
30. On 46RH, remove low-reverse drum and rear band as follows.
(a) Loosen rear band locknut and loosen adjusting screw 3-4 turns.






(b) Remove snap ring that retains low-reverse drum on overdrive piston retainer hub (Fig. 29).











(c) Slide low-reverse drum off piston retainer hub and out of rear band (Fig. 30).






(d) Remove rear band adjusting lever, reaction lever and reaction pin (Fig. 31).
(e) Remove strut from rear band. Keep strut with levers and pin for cleaning, inspection and assembly reference.






(f) Remove rear band and link (Fig. 32).


31. On 47RH, low-reverse drum and rear band are removed as assembly as follows:






(a) Loosen band adjusting screw locknut (Fig. 33), and back off adjusting screw 4-5 turns.






(b) Remove rear band lever pivot pin. Use allen wrench or similar tool to push pivot pin out rear of case (Fig. 34).






(c) Remove band reaction pin. Use pin punch to push reaction pin out rear of case (Fig. 35).






(d) Push reaction pin with punch until pin can be grasped and pulled out of case by hand (Fig. 36).






(e) Remove snap ring that retains drum on overdrive piston retainer hub (Fig. 37).






(f) Remove rear band and drum as assembly (Fig. 38).






(g) Remove double wrap rear band from drum (Fig. 39). Note that 47RH drum has shoulder to maintain band position.






32. On all models, note that overrunning clutch race will remain on splines of low-reverse drum after removal (Fig. 40).The race is a permanent press fit on the hub splines. Do not attempt to remove the race.






33. Remove overrunning clutch assembly (Fig. 41). Assembly can be removed without displacing rollers and springs if care is exercised. Note position of rollers and springs for assembly reference.






34. Compress front servo rod guide with C-clamp and Tool C-4470, or Valve Spring Compressor C-3422-B (Fig. 42). Compress guide only enough to permit snap ring removal (about 1/8 in.).
35. Remove servo piston snap ring (Fig. 42). 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 sratched or nicked if care is not exercised.
36. Remove tools and remove servo piston and spring.






37. On 46RH, compress rear servo piston spring with C-clamp and Tool C-4470, or Valve Spring Compressor C-3422-B (Fig. 43). On 47RH, use a C-clamp, as compressor tool will not fit on reinforcing ribs around rear servo. If C-clamp is not available, compress retainer and spring by hand while helper removes snap ring. Compress servo spring retainer only enough to permit snap ring removal.
38. Remove servo piston snap ring (Fig. 43). Start one end of ring out of bore. Then careflilly 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.






39. Remove tools and remove rear servo retainer, spring and piston assembly.
40. Remove gasket from rear of case after removing piston retainer.