Outer Synchronizer Ring/Inner Synchronizer Ring/Synchronizer Cone

CAUTION: When replacing, replace the outer ring, inner ring and cone as a set.

Check that the clutch gear tooth surfaces and cone surfaces are not damaged or broken.

Fig 1: Checking Clutch Gear Tooth Surfaces And Cone Surfaces
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Install the outer ring, inner ring and cone, force them toward the gear, and check clearance "A." If "A" is less than the limit, replace them as a set.
Minimum limit: 0.5 mm (0.020 inch)

Fig 2: Checking Clearance A
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.