MACK HMM6856S 1974: STEERING:LINKAGES
NHTSA Campaign ID Number: 78V028000
| Make | Model | Year |
|---|---|---|
| MACK | HMM6856S | 1974 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1978-08-14 | 1978-02-09 | 1979-10-12 |
Production Dates: 1973-01-01 - 1977-01-01
Manufacturers Involved: Mack Trucks, Inc.
Component: STEERING:LINKAGES
Potential Number Of Units Affected: 100
Report Initiator: MFR MFR Report
THE STEERING PITMAN ARM IS SUBJECT TO FAILURE AT THE AREA OF THE TRANSITION TO THE ARM OFFSET DUE TO HIGH STRESS CONCENTRATIONS.
DEALER WILL REPLACE THE STEERING PITMAN ARM, STEERING GEAR OUTPUT SHAFT AND STEERING GEAR MOUNTING BRACKET.
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: STEERING; STEERING PITMAN ARM.CONSEQUENCES OF DEFECT: PITMAN ARM FAILURE COULD CAUSE LOSS OF VEHICLE CONTROLWITHOUT PRIOR WARNING AND A POTENTIAL VEHICLE ACCIDENT.
