MACK RM 1992: TRAILER HITCHES
General Information
NHTSA Campaign ID Number: 93V024000
| Make | Model | Year |
|---|---|---|
| MACK | RM | 1992 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1993-03-24 | 1993-02-16 | 1993-03-25 |
Production Dates: 1987-07-01 - 1992-07-01
Manufacturers Involved: Mack Trucks, Inc.
Component: TRAILER HITCHES
Potential Number Of Units Affected: 4924
Report Initiator: MFR MFR Report
Summary
THE CARRIER YOKE BOLTS WERE MANUFACTURED WITH WORN ROLLING THREAD DIES, CAUSING STRESS CONCENTRATIONS WHICH CAUSED CRACKS DURING THE QUENCHING PROCESS.
Consequence
THIS CONDITION CAN CAUSE BOLT FAILURE AND ALLOW THEDRIVELINE TO SEPARATE FROM THE CARRIER ASSEMBLY.
Remedy
REPLACE THE CARRIER YOKE BOLTS.
Notes
SYSTEM: TRAILER YOKE.VEHICLE DESCRIPTION: HEAVY TRUCKS.
