Unit Disassembly

- Tools Required:
- J 23642-01 Transmission Holding Fixture
- J 24462 Transmission Adapter Plate














REMOVE OR DISCONNECT
1. Shift tower to the shift cover bolts.





2. Shift tower from the shift cover.
3. Shift tower isolator plate from the shift cover.
4. Shift cover to the transmission case bolts.





5. Shift cover from the transmission case.
- Separate the shift cover from the transmission case by inserting screwdrivers in the slots provided. Do not attempt to pry apart on the mating surfaces or damage to the surfaces may result.
6. Mainshaft nut, washer, and spline seal.
7. Yoke assembly.
8. Rear oil retainer bolts.





9. Rear oil retainer from the transmission case.
- It may be necessary to use a soft-faced hammer to separate the rear oil retainer from the transmission case.
- Move synchronizer sleeves to lock transmission into two gears at once.
10. Main drive gear bearing retainer bolts.





11. Main drive gear bearing retainer.
- Mark the retainer and the case for alignment.
- Drive the bearing retainer from the transmission case by inserting a brass punch in the slot provided.





12. Main drive gear and main drive gear bearing.
13. Fifth gear shift fork roll pins.
- Support the fifth gear fork and drive the pins out from the bottom of the fork.
14. Fifth gear clutch gear snap ring.





15. Fifth gear assembly from the Countershaft.
- Slide overdrive fork as far rearward as possible while working the overdrive gear assembly rearward.
- if unable to remove overdrive gear assembly, remove overdrive clutch gear, synchronizer ring, spacer, and overdrive gear bearings to lower and remove overdrive gear.
- Do not let the synchronizer come apart.
16. Countershaft thrust washer and pin.





17. Mainshaft fifth gear and vehicle speed sensor rotor from the mainshaft.
18. Mainshaft rear bearing retaining plate bolts.
19. Mainshaft bearing retainer plate, shim(s), and mainshaft rear bearing cup.
- Move synchronizer sleeves into neutral position.
- Raise fifth gear shift lever up out of the way and hold with a rubber band.





20. Mainshaft assembly.
- Lift the mainshaft assembly by the nose through the front. It may be necessary to wiggle or twist the mainshaft assembly to remove the second speed gear from the Countershaft.
21. Countershaft bearing retaining plate bolts.
22. Countershaft bearing retainer plate and shim(s).
23. Countershaft rear bearing cup.





24. Reverse idler gear shaft.
- Using a punch, push the reverse idler shaft of from inside the transmission case.
25. Reverse idler gear, washers, bearings, and space.





26. Countershaft rear bearing.
- Make sure the bearing puller is attached to the bearing inner race.
27. Countershaft assembly from the transmission cast
28. Countershaft bearing cap.
29. Countershaft front bearing cup.
30. Fifth gear shift lever retaining pin.
31. Fifth gear shift lever shaft.
- Push shaft outward from inside of case.
32. Fifth gear shift lever.