NHTSA Recall 78V157000
Filed by Volvo Trucks North America. Component: Service Brakes, Air. Reported 1978-07-06. An estimated 140 vehicles are affected. Recall repairs are free at any authorized dealer.
Defect
THE INVOLVED VEHICLES DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS", IN THAT SOME DUAL COMPARTMENT AIR RESERVOIRS WERE INSTALLED WITHOUT A DRAIN VALVE IN BOTH COMPARTMENTS. THE OMISSION OF THE DRAIN VALVE COULD CAUSE: 1) THE TANK TO FILL UP WITH WATER DUE TO CONDENSATION, 2) REDUCED AIR VOLUME, 3) CONTAMINATION OF THE AIR SYSTEM WITH WATER, CAUSING MALFUNCTION OF THE RELEASE VALVES, CHECK VALVES, ETC., AND INCREASING THE POSSIBILITY OF AIR SYSTEM COMPONENT FREEZE-UP IN COLD CLIMATES. THESE CONDITIONS COULD RESULT IN MOMENTARY LOSS OF BRAKING ACTION.
What the manufacturer will do
DEALER WILL INSPECT AND, IF NECESSARY, INSTALL A DRAIN VALVE AT NO COST TO OWNER.
Notes
VEHICLE DESCRIPTION: HEAVY TRUCKS AND TRACTORS.SYSTEM: SERVICE BRAKES; AIR DRAIN VALVE.CONSEQUENCES OF DEFECT: LOSS OF BRAKING CAPABILITY COULD CAUSE LOSS OF VEHICLECONTROL AND AN ACCIDENT.