Mack Recall 75V192000: Service Brakes, Air, Supply, Hoses, Lines/piping, And Fittings

NHTSA recall 75V192000 · announced October 31, 1975 · filed by Mack Trucks, Incorporated · 1,200 units affected

Official NHTSA recall notice →

Notes

MACK CAMPAIGN NO N/A.TRUCKS WITH DUAL BRAKE TREADLE VALVE PIPING SEPT.1974AND MAR.31, 1975.POSSIBILITY THAT THE PRIMARY AND SECONDARY AIR SUPPLYLINES MAY HAVE BEEN CONNECTED IN REVERSE AT THE DUAL BRAKE TREADLE VALVE.THEREVERSING OF THESE SUPPLY LINES DOES NOT IN ITSELF, AFFECT VEHICLE BRAKING IFBOTH THE PRIMARY AND SECONDARY AIR SUPPLY SYSTEMS HAVE NORMAL OPERATING AIRPRESSURE.HOWEVER, IN THE EVENT OF LOSS OF AIR PRESSURE IN EITHER THE PRIMARYOR SECONDARY SYSTEM, NEITHER THE PRIMARY NOR SECONDARY SERVICE BRAKES WOULDFUNCTION WHEN APPLIED.IN THIS EVENT, IT WOULD REQUIRE MANUAL APPLICATION OFTHE EMERGENCY SPRING BRAKE TO STOP VEHICLE.(CORRECT BY INSPECTING ANDREROUTING AIR SUPPLY PIPING AS REQUIRED TO CORRECT SYSTEM).

Vehicles covered by this recall

• 1974 Mack Dm
• 1975 Mack Dm
• 1974 Mack Dmm
• 1975 Mack Dmm
• 1974 Mack F
• 1975 Mack F
• 1975 Mack Mb
• 1974 Mack R
• 1975 Mack R
• 1974 Mack Rd
• 1975 Mack Rd
• 1974 Mack Rm
• 1975 Mack Rm
• 1974 Mack U
• 1975 Mack U

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