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NHTSA Campaign 84V035000

SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

Issued by MACK TRUCKS, INCORPORATED · Reported Mar 23, 1984 · 850 vehicles affected

What's wrong

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.

Remedy

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

Vehicles affected by this recall

Make Model Year Units
MACK MH 1982 850
MACK MH 1983 850

Source: NHTSA Campaign 84V035000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.