Input Shaft Disassembly

Before disassembly of the input shaft, it is necessary to check the synchronizer stop ring gap. Use a feeler gauge to measure the gaps between the stop rings and the speed gears.
The correct gaps are listed below:

1st 1.04 - 1.72 mm (.0409 - .0677 in.)
2nd 0.94 - 1.72 mm (.0370 - .0677 in.)
3rd 1.37 - 1.93 mm (.0539 - .0760 in.)
4th 1.41 - 1.97 mm (.0555 - .0776 in.)
5th 1.37 - 1.93 mm (.0539 - .0760 in.)

If a stop ring gap does not fall within the specifications it must be inspected for wear and replaced. If the 1st or 2nd synchronizer stop ring is worn beyond specifications, the complete output shaft assembly must be replaced.
The input shaft incorporates the 3rd, 4th, and 5th speed gears and synchronizers on the assembly.




1. Install MD998801 behind 5th speed gear. Remove snap ring at 5th synchronizer hub on input shaft.




2. Remove synchronizer and gear using shop press.




3. Remove caged needle bearing.




4. Remove 4-5 gears split thrust washer ring.




5. Remove split thrust washer.




6. Remove split thrust washer separation pin.




7. Remove 4th gear.




8. Remove 4th gear caged needle bearing. Check the caged needle bearing for a broken retention spring.




9. Remove blocking ring. Remove 3/4 synchronizer hub retaining snap ring.




10. Install input shaft in shop press. Using MD998801 to remove 3/4 synchronizer and 3rd gear.




11. Remove 3rd gear caged needle bearing. Check the caged needle bearing for a broken retention spring.
12. Inspect the input shaft for worn or damaged bearing races or chipped gear teeth. Replace as necessary.