Recall campaign · NHTSA 78V170000

Engine and engine cooling: engine

MACK TRUCKS, INCORPORATED filed this campaign with NHTSA on 1978-08-08.

Recall campaignNHTSA 78V170000

Engine and engine cooling: engine

Component: Engine and engine cooling: engine
Manufacturer: MACK TRUCKS, INCORPORATED
Vehicles affected: 850
Reported to NHTSA: 1978-08-08
Owners notified: 1978-12-04

Defect description

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.

Manufacturer remedy

DEALER WILL INSPECT AND, IF NECESSARY, REPLACE ALUMINUM SUPPORT BRACKETS WITH BRACKETS MADE FROM DUCTILE IRON FOR INCREASED STRENGTH.

Notes

VEHICLE DESCRIPTION: TRUCKS.SYSTEM: ENGINE; ENGINE MOUNTING BRACKET.CONSEQUENCES OF DEFECT: LOSS OF THROTTLE CONTROL MAY RESULT IN LOSS OF VEHICLECONTROL AND AN ACCIDENT.

Scope of coverage

16 model years across 4 models.

Model	Years on record
MACK RWL	1978 1977 1976 1975
MACK RWS	1978 1977 1976 1975
MACK WL	1978 1977 1976 1975
MACK WS	1978 1977 1976 1975

Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.