Synchronizer Ring: Testing and Inspection

SYNCHRONIZERS
^ Check spline portion of coupling sleeves, hubs, and gears for wear or cracks.
^ Check baulk rings for cracks or deformation.
^ Check shifting inserts for wear or deformation.
^ Check insert springs for deformation.





Clearance between baulk ring and gear





If the clearance is smaller than the wear limit, replace baulk ring.





^ Measure wear of reverse baulk ring.
a. Place baulk ring in position on reverse cone.
b. While holding baulk ring against reverse cone as far as it will go, measure dimension "A" with dial indicator.





c. If dimension "A" is larger than the wear limit, replace baulk ring.