M/T Countershaft Assembly Clearance Inspection
Measure the thickness of 1st gear.
If the thickness is less than the service limit, replace 1st gear.
If the thickness is within the service limit, replace the 1st/2nd synchro hub/sleeve.
Standard:
22.91−22.99 mm (0.902−0.905 in.)
Service Limit:
22.86 mm (0.900 in.)