Mack Recall 78V068000: Service Brakes, Air, Antilock, Control Unit/module

NHTSA recall 78V068000 · announced April 4, 1978 · filed by Mack Trucks, Incorporated · 9,700 units affected

The problem

AN AXLE "NO BRAKE" CONDITION COULD RESULT FROM AN EATON CONTROLLER INTERNAL ELECTRICAL MALFUNCTION. THIS CONDITION MAY CAUSE THE ANTI-WHEEL LOCK VALVE SOLENOID TO BE CONTINUOUSLY ENERGIZED AND PREVENT THE BRAKES FROM BEING APPLIED ON ONE OF THE AXLES. AS A RESULT, THE ANTI-WHEEL LOCK WARNING LAMP IS NOT ACTIVATED.

What to do

THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE ANTI-WHEEL LOCK CONTROLLER WITHOUT CHARGE TO OWNER.

Official NHTSA recall notice →

Notes

VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH EATON 21 ANTI-LOCK CONTROLLERS.SYSTEM: SERVICE BRAKES; ANTI-WHEEL LOCK SOLENOID.CONSEQUENCES OF DEFECT: LOSS OF BRAKES ON ANY ONE AXLE WILL RESULT IN EXTENDEDVEHICLE STOPPING DISTANCES, WHICH COULD LEAD TO A VEHICLE ACCIDENT.

Vehicles covered by this recall

• 1974 Mack Dm
• 1975 Mack Dm
• 1976 Mack Dm
• 1974 Mack Dmm
• 1975 Mack Dmm
• 1976 Mack Dmm
• 1974 Mack F
• 1975 Mack F
• 1976 Mack F
• 1974 Mack Hmm
• 1975 Mack Hmm
• 1976 Mack Hmm
• 1974 Mack Mb
• 1975 Mack Mb
• 1976 Mack Mb
• 1974 Mack R
• 1975 Mack R
• 1976 Mack R
• 1974 Mack Rd
• 1975 Mack Rd
• 1976 Mack Rd
• 1974 Mack Rl
• 1975 Mack Rl
• 1976 Mack Rl
• 1974 Mack Rm
• 1975 Mack Rm
• 1976 Mack Rm
• 1974 Mack Rs
• 1975 Mack Rs
• 1976 Mack Rs
• 1974 Mack U
• 1975 Mack U
• 1976 Mack U
• 1974 Mack Wl
• 1975 Mack Wl
• 1976 Mack Wl
• 1974 Mack Ws
• 1975 Mack Ws
• 1976 Mack Ws

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