Synchronizer Ring

Inspect synchronizer ring teeth for damage, wear and cracks.
Inspect tapered surface for wear and cracks.

Fig 1: Inspecting Synchronizer Ring Teeth For Damage, Wear And Cracks
Courtesy of KIA MOTORS AMERICA, INC.
Set synchronizer ring squarely in gear.
Measure clearance between synchronizer ring and flank surface of gear.
Standard clearance: 0.059 in (1.5 mm)

Minimum: 0.031 in (0.8 mm)

Fig 2: Measuring Clearance Between Synchronizer Ring And Flank Surface Of Gear
Courtesy of KIA MOTORS AMERICA, INC.