Mack Recall 78V031000: Suspension, Multiple Axle

NHTSA recall 78V031000 · announced February 9, 1978 · filed by Mack Trucks, Incorporated · 33,000 units affected

The problem

THE TEE BRACKET, WHICH IS MOUNTED ON THE FRONT AXLE OF THE BOGIE, MAY FAIL DUE TO VIBRATION BROUGHT ON BY ROAD SURFACE IRREGULARITIES. BRACKET FAILURE WOULD LEAVE THE TEE BRACKET UNSUPPORTED AND CAUSE BROKEN HOSE CONNECTOR FITTINGS. THIS WOULD RESULT IN AUTOMATIC APPLICATION OF THE SPRING EMERGENCY BRAKES.

What to do

THE DEALER WILL REPLACE THE DEFECTIVE BRACKET WITH A REDESIGNED VERSION.

Official NHTSA recall notice →

Notes

VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH HIGHWAY BOGIES.SYSTEM: SUSPENSION; TEE BRACKET.CONSEQUENCES OF DEFECT: AUTOMATIC APPLICATION OF THE SPRING EMERGENCY BRAKESCOULD CAUSE LOSS OF VEHICLE CONTROL AND AN ACCIDENT.

Vehicles covered by this recall

• 1975 Mack F
• 1976 Mack F
• 1977 Mack F
• 1978 Mack F
• 1975 Mack R
• 1976 Mack R
• 1977 Mack R
• 1978 Mack R
• 1975 Mack U
• 1976 Mack U
• 1977 Mack U
• 1978 Mack U

Source: National Highway Traffic Safety Administration public recall data. This page reports official records and is not legal, medical, or repair advice.