NHTSA recall 89V209000
Service brakes, hydraulic › Foundation components › Hoses, lines/piping, and fittings
Marmon Chdt Series and 1 more
Reported Nov 29, 19893,970 vehicles affectedMARMON MOTOR COMPANYBuilt Nov 1, 1973 – Oct 1, 1989
The defect
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.
The 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.
The remedy
Install pressure protection valve(s) in the air system to isolate all accessory air lines from the brake system.