Supply: hoses, lines/piping, and fittingsRecall 75V-192 · Mack vehicles
MACK TRUCKS, INCORPORATED recall 75V-192 covers 1,200 Mack vehicles for a supply: hoses, lines/piping, and fittings problem, reported to NHTSA on October 31, 1975.
Source: NHTSA recall 75V192000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
The fix
The remedy has not been described yet.
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).
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.