Input Shaft Disassemble

Input Shaft Disassemble

Tools Required
^ 87 90 636 Pinion Fixture
^ 87 91 121 Input Shaft Puller Ring
^ 87 91 287 Puller
^ 87 91 642 Basic Puller
^ 87 92 152 Input Shaft Puller




1. Mount the input shaft in a vise with soft jaws.
2. Remove the bearing retaining ring and discard.





Important: The input shaft bearing can not be reused after removal. It must be replaced.

Important: Loosen the 87 92 152 until the tool sits flush on the 4th drive gear before tightening the tool onto the bearing.

3. Remove the input shaft bearing using the 87 92 152 and the 87 91 642.




4. Remove the 4th drive gear, 4th gear leaf springs, 4th gear blocking ring, and 4th gear bearing.





Caution: The synchronizer detent inserts may be forced out by spring pressure and could injure someone. To help avoid injury, always cover the synchronizer hub detent openings during disassembly.

5. Move the 3rd/4th gear synchronizer sleeve down, toward third gear, far enough to remove the synchronizer detent inserts with a small screwdriver.





Important: Note the orientation of the 3rd/4th gear synchronizer sleeve. It needs to be installed in the same orientation.

6. Remove the 3rd/4th gear synchronizer sleeve.




7. Remove the 3rd/4th gear synchronizer insert pins and springs.




8. Remove the 3rd/4th gear synchronizer hub retaining ring and washer. Remove the 3rd/4th synchronizer hub using the 87 91 287 under the 3rd gear.




9. Remove the 3rd gear blocking ring, 3rd gear leaf springs, 3rd drive gear, and 3rd gear bearing assembly.




10. Press off the input shaft bearing, next to 1st drive gear, using the 87 91 121 and the 87 90 636.