STEERING: STEERING WHEEL/HANDLE BAR
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.
Remedy: REPLACE THE ZINC PLATED BOLT WITH A PHOSPHATE PLATED BOLT.