TRAILER HITCHES
Feb 16, 1993
4,924 units potentially affected
The defect: THE CARRIER YOKE BOLTS WERE MANUFACTURED WITH WORN ROLLING THREAD DIES, CAUSING STRESS CONCENTRATIONS WHICH CAUSED CRACKS DURING THE QUENCHING PROCESS.
The risk: THIS CONDITION CAN CAUSE BOLT FAILURE AND ALLOW THEDRIVELINE TO SEPARATE FROM THE CARRIER ASSEMBLY.
The remedy: REPLACE THE CARRIER YOKE BOLTS.
MACK TRUCKS, INCORPORATEDView on NHTSA.gov