M/T Countershaft Assembly Clearance Inspection
Measure the thickness of the 2nd gear.
If the thickness of 2nd gear is less than the service limit, replace 2nd gear with new one.
If the thickness of 1st gear is within the service limit, replace the 1st/2nd synchro hub with a new one.
Standard:
26.42−26.47 mm (1.040−1.042 in.)