Mainshaft Assembly Clearance Inspection
Mainshaft Assembly Clearance InspectionNOTE: If replacement is required, always replace the synchro sleeve and synchro 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 clearance between 2nd gear (C) and 3rd gear (D) 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.
Standard: 0.06 - 0.21 mm (0.002 - 0.008 in.)
Service Limit: 0.30 mm (0.012 in.)
3. Measure thickness of 3rd gear.
^ If the thickness is less than the service limit, replace 3rd gear.
^ If the thickness is within the service limit, replace the 3rd/4th synchro hub and 3rd/4th synchro sleeve as a set.
4. Measure 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 length (1) of the distance collar as shown
^ If the length (1) is not within the standard, replace the distance collar.
^ If the length (1) is within the standard, go to step 6.
6. Measure thickness of 4th gear.
^ If the thickness is less than the service limit, replace 4th gear.
^ If the thickness is within the service limit, replace the 3rd/4th synchro hub and 3rd/4th synchro sleeve as a set.
7. Measure 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 length (2) of the distance collar as shown
^ If the length (2) is not within the standard, replace the distance collar.
^ If the length (2) is within the standard, go to step 9.
9. Measure thickness of 5th gear.
^ If the thickness is less than the service limit, replace 5th gear.
^ If the thickness is within the service limit, replace the 5th synchro hub and 5th synchro sleeve as a set.
10. Measure length of the MBS distance collar.
^ If the length is not within the standard, replace the MBS distance collar.
