M/T 3rd/4th Synchro Ring and Gear Inspection
  1. Measure the clearance between each gear (A) and its synchro ring (B) all the way round. Hold the synchro ring against the gear evenly while measuring the clearance. If the clearance is less than the service limit, replace the synchro ring and gear.

    Synchro Ring-to-Gear Clearance

    Standard:
    0.70−1.49 mm (0.028−0.059 in.)
    Service Limit:
    0.4 mm (0.02 in.)