Saginaw 3 Speed

1. Remove side cover screws, side cover assembly and shift forks.





2. Remove main drive gear bearing retainer and snap ring. Using a suitable tool, remove main drive gear bearing.

3. Remove extension housing to case bolts.





4. Remove reverse idler shaft retaining snap ring, main drive gear, mainshaft and extension housing assembly from rear case opening.

5. Using a suitable tool, remove mainshaft rear bearing extension snap ring.





6. Position tool No. J-22246 or equivalent onto front of countershaft. Drive countershaft and woodruff key from rear of case.

7. Remove roller gear and bearings from rear of case.

8. Using a drift and hammer, remove reverse idler shaft and woodruff key from rear of case.

9. Using a suitable tool, remove second and third synchronizing hub, snap ring from mainshaft, synchronizer assembly, second speed blocker ring and second speed gear from front of mainshaft.

10. Mark synchronizer hub.





11. Depress speedometer drive gear clip, and remove speedometer gear from mainshaft.

12. Remove rear bearing snap ring from mainshaft groove.





13. Using an arbor press, press on rear of mainshaft and remove reverse gear, washers, rear bearing and snap ring. Ensure arbor press is centered on gear, washers and snap ring before attempting to press components off of mainshaft.

14. Remove first and reverse synchronizer hub snap ring from mainshaft.





15. Remove synchronizer assembly, first speed blocker ring and first speed gear from rear of mainshaft.

16. Mark and remove synchronizer hub.

NOTE: Clean and inspect transmission thoroughly. Check front and rear mating surfaces for evidence of damage or wear. Minor rough spots can be smoothed with a file. Check bearing bores and if damaged, replace case.