MACK RWS 1976: ENGINE AND ENGINE COOLING:ENGINE
NHTSA Campaign ID Number: 78V170000
| Make | Model | Year |
|---|---|---|
| MACK | RWS | 1976 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1978-12-04 | 1978-08-08 | 1979-10-12 |
Manufacturers Involved: Mack Trucks, Inc.
Component: ENGINE AND ENGINE COOLING:ENGINE
Potential Number Of Units Affected: 850
Report Initiator: MFR MFR Report
THE POSSIBILITY EXISTS THAT THE ALUMINUM ENGINE REAR SUPPORT BRACKETS MAY FAIL DUE TO METAL FATIGUE. THIS TYPE OF FAILURE WOULD ALLOW THE ENGINE AND TRANSMISSION ASSEMBLY TO DISLOCATE DOWNWARD. THIS WILL RESULT IN THROTTLE CONTROL LOSS WITH THE ENGINE OPERATING CONTINUOUSLY IN THE MID TO UPPER RANGE OF THE GOVERNED SPEED RANGE.
DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ALUMINUM SUPPORT BRACKETS WITH BRACKETS MADE FROM DUCTILE IRON FOR INCREASED STRENGTH.
VEHICLE DESCRIPTION: TRUCKS.SYSTEM: ENGINE; ENGINE MOUNTING BRACKET.CONSEQUENCES OF DEFECT: LOSS OF THROTTLE CONTROL MAY RESULT IN LOSS OF VEHICLECONTROL AND AN ACCIDENT.
