Mainshaft Assembly Clearance Inspection

Mainshaft Assembly Clearance Inspection.

NOTE: If replacement is required, always replace the synchro sleeve and hub as a set.





1. Support the bearing inner race with an appropriate sized socket (A), and push down on the mainshaft (B).
2. Measure the clearance between 2nd (C) and 3rd (D) gears with a feeler gauge (E).
^ If the clearance is more than the service limit, go to step 3.
^ If the clearance is within the service limit, go to step 4.





3. Measure the thickness of 3rd gear.
^ If the thickness of 3rd gear is less than the service limit, replace 3rd gear with a new one.
^ If the thickness of 3rd gear is within the service limit, replace the 3rd/4th synchro hub with a new one.





4. Measure the clearance between 4th gear (A) and the distance collar (B) with a dial indicator (C). If the clearance is more than the service limit, go to step 5.





5. Measure distance (1) on the-distance collar.
^ If distance (1) is less-than the service limit, replace the distance collar with a new one.
^ If distance (1) is within the service limit, go to step 6.





6. Measure the thickness of 4th gear.
^ If the thickness of 4th gear is less than the service limit, replace 4th gear with a new one.
^ If the thickness of 4th gear is within the service limit, replace the 3rd/4th synchro hub with a new one.





7. Measure the clearance between the distance collar (A) and 5th gear (B) with a dial indicator (C). If the clearance is more than the service limit, go to step 8.





8. Measure distance (a) on the distance collar.
^ If distance (a) is less than the service limit, replace the distance collar with a new one.
^ If distance (a) is within the service limit, go to step 9.





9. Measure the thickness of 5th gear.
^ If the thickness of 5th gear is less than the service limit, replace 5th gear with a new one.
^ If the thickness of 5th gear is within the service limit, replace the 5th synchro hub with a new one.