Transmission Gear Clash When Shifting Gears

Transmission Gear Clash When Shifting Gears

Diagnostic Aids

Gear clash is a grinding noise that is made while shifting gears. You should perform a static shift and dynamic shift test. If the transmission develops gear clash, first inspect the clutch adjustment or for a faulty clutch condition. A clutch that drags or does not fully engage is the most common cause of gear clash. If the clutch is at fault, the clash should occur in every gear. If the clutch is operating properly or the clash does not occur in all gears, remove the transmission and inspect for worn or damaged synchronizers, including the sleeves, hubs, and the blocking rings. Also inspect for loose mounting bolts or misalignment.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

2.

This step inspects for proper clutch operations.

5.

This step inspects for air the hydraulic clutch system.

12.

This step inspects for worn or damaged internal components.