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NHTSA safety recall

Recall 75V193000: SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS

MACK TRUCKS, INCORPORATED · Reported to NHTSA Oct 31, 1975

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
Units potentially affectedThe manufacturer's own estimate of how many vehicles or items of equipment may contain the defect. It is not a count of failures, and not every unit in the range is necessarily affected.
2,250
Model years coveredModel years in our database that NHTSA matched to this campaign. Whether an individual vehicle is covered still depends on its VIN.
2
Models covered
1
Grouped from the model years above
Reported to NHTSA
Oct 31, 1975

What this recall covers

NHTSA's campaign record, quoted as published

Notes

MACK CAMPAIGN NO Q1012.TRUCKS SEPT.2, 1974 THRU JULY 30, 1975.POSSIBILITYTHAT AN ERROR WAS MADE IN THE INSTALLATION OF THE AIR SUPPLY PIPING TO THETRACTOR TRAILER PARK VALVE MANIFOLD.IF THIS OCCURS, THE PRIMARY AIR SUPPLYSYSTEM BECOMES THE SOLE SOURCE FOR SUPPLY AIR TO THE TRACTOR TRAILER PARK VALVEIN THIS CONDITION, TRACTOR OR TRAILER BRAKE OPERATION IS NOT AFFECTED, AS LONGAS THE PRIMARY SYSTEM HAS NORMAL OPERATING AIR PRESSURE.HOWEVER,IN THIS COULDBE HAZARDOUS TO EITHER THE PRIMARY SYSTEM, THERE WILL BE A CORRESPONDING LOSSOF AIR TO THE TRACTOR TRAILER PARK VALVE0 AND THIS VALVE, BY DESIGN, WILLAUTOMATICALLY APPLY THE EMERGENCY SPRING BRAKES, WHICH THEN COULD ONLY BERELEASED MECHANICALLY.AN AUTOMATIC APPLICATION OF THE EMERGENCY SPRING BRAKESWOULD IMMOBILIZE THE VEHICLE AND REQUIRE MECHANICAL RELEASE WHEEL BY WHEEL.THIS COULD BE HAZORDOUS TO EITHER THE VEHICLE OPERATOR OR TO THE INDIVIDUALRELEASING THE BRAKES.(CORRECT BY INSPECTING AND CHANGING PIPING TO PROPER AIRSUPPLY SYSTEM).

A safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.

Campaign details

Identifiers and dates as filed with NHTSA

Manufacturer
MACK TRUCKS, INCORPORATED
Manufacturer's campaign number
Not recorded
NHTSA campaign number
75V193000
Units potentially affected
2,250
Report received
Oct 31, 1975
Production range
Not recorded
Campaign type
Vehicle
Federal safety standard (FMVSS)
Not recorded

Vehicles covered

2 model years across 1 model

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.