Synchronizer Blocker Ring Inspection

- Inspect the gear cones, clutch teeth and blocker rings for excessive wear.
- Inspect the synchronizer sleeve and gear clutch teeth for evidence of gear clash or cause of hop-out.
- Measure the gap between the blocker ring and the speed gear. Make sure the correct blocker ring is measured with the correct gear and the blocker ring is fully seated on the gear.
- Replace blocker rings for 1st, 2nd, 3rd, 4th, 5th and 6th gears if the wear gap is less than 0.38 mm (0.015 in.).
- Replace the reverse blocker ring if the wear gap is less than 0.75 mm (0.030 in.), when measured without the wave washer (71) in between the blocker ring and reverse gear.