Service brakes, hydraulic: foundation components: hoses, lines/piping, and fittings
- Component
- Service brakes, hydraulic: foundation components: hoses, lines/piping, and fittings
- Manufacturer
- MARMON MOTOR COMPANY
- Vehicles affected
- 3,970
- Reported to NHTSA
- 1989-11-29
- Owners notified
- 1989-12-28
Defect description
NON-DOT "PUSH-ON" TYPE HOSES WERE USED IN CERTAIN ACCESSORY NON-BRAKE AIR SYSTEMS, WITHOUT ISOLATION OF THAT SYSTEM BY A CHECK VALVE, PRESSURE PROTECTION VALVE, OR OTHER MEANS OF SYSTEM SEPARATION.
Safety risk
TRUCKS DO NOT COMPLY WITH FMVSS 106; THERE COULD BE ANUNCHECKED LOSS OF AIR PRESSURE IN THE BRAKES THAT COULD RESULT IN THE LOSS OFSERVICE BRAKES AND TRUCK CONTROL.
Manufacturer remedy
INSTALL PRESSURE PROTECTION VALVE(S) IN THE AIR SYSTEM TO ISOLATE ALL ACCESSORY AIR LINES FROM THE BRAKE SYSTEM.