Steering wheel/handle bar
- Problem
- THE ZINC PLATING OPERATION PERFORMED ON THE UPPER STEERING COLUMN SHAFT COUPLING BOLT CAUSED HYDROGEN EMBRITTLEMENT AND BREAKAGE OF THE BOLT.
- Risk
- FRACTURES OF THE UPPER STEERING COLUMN SHAFT COUPLINGBOLT RESULT IN A LACK OF COUPLING LOAD ON THE SHAFT AND LOSS OF STEERINGCONTROL.
- Fix
- REPLACE THE ZINC PLATED BOLT WITH A PHOSPHATE PLATED BOLT.