Mack Recall 84V035000: Service Brakes, Air, Supply, Check Valve

NHTSA recall 84V035000 · announced March 23, 1984 · filed by Mack Trucks, Incorporated · 850 units affected

The problem

A MANUFACTURING ERROR RESULTED IN THE INSTALLATION OF CARBON STEEL SPRINGS IN SOME DUAL-COMPARTMENT AIR RESERVOIR CHECK VALVES. CARBON STEEL SPRINGS ARE INADEQUATE FOR THIS APPLICATION BECAUSE THEY ARE SUBJECT TO SEVERE CORROSION AND SUBSEQUENT FAILURE OF THE CHECK VALVE.

What to do

THE CARBON STEEL SPRING WILL BE REPLACED WITH A STAINLESS STEEL ONE.

Official NHTSA recall notice →

Notes

VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: SERVICE BRAKES; DUAL COMPARTMENT AIR RESERVOIR CHECK VALVE.CONSEQUENCES OF DEFECT: IF THIS CHECK VALVE FAILURE WERE COMBINED WITH ASEVERED LINE IN THE PRIMARY AIR SYSTEM, COMPLETE LOSS OF BRAKES AND POSSIBLEVEHICLE CRASH COULD OCCUR.

Vehicles covered by this recall

• 1982 Mack Mh
• 1983 Mack Mh

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