NHTSA Recall 78V086000
Filed by FREIGHTLINER LLC. Component: Service Brakes, Air. Reported 1978-04-19. An estimated 12 vehicles are affected. Recall repairs are free at any authorized dealer.
Defect
AN OPERATIONAL AMPLIFIER IN THE AXLE CONTROLLERS ON THE INVOLVED VEHICLES MAY DEVIATE FROM SPECIFICATIONS. THERE MAY ALSO BE AN OPENING IN A SOLDER CONNECTION BETWEEN THE PRINTED CIRCUIT BOARD AND THE NEGATIVE TERMINAL OF THE CAPACITOR. THESE CONDITIONS CAUSE THE ANTI-LOCK VALVE SOLENOID TO BE ENERGIZED CONTINUOUSLY.
What the manufacturer will do
THE INCORRECT CONTROLLER WILL BE REPLACED WITH A NEW ONE.
Notes
VEHICLE DESCRIPTION: HEAVY TRUCKS EQUIPPED WITH EATON ANTI-LOCK SYSTEMS.SYSTEM: SERVICE BRAKES; AXLE CONTROLLERS.CONSEQUENCES OF DEFECT: THE CONSTANTLY ENERGIZED SOLENOID PREVENTS APPLICATIONOF THE BRAKES ON THE AXLE BEING CONTROLLED BY THE AFFECTED ANTI-LOCK SYSTEM.THIS CONDITION WOULD LEAD TO LONGER VEHICLE STOPPING DISTANCES, AND THEPOSSIBILITY OF A VEHICLE ACCIDENT.NOTE: THE BRAKE WARNING LIGHT WOULD NOT BE ACTIVATED IF THIS TYPE OF FAILUREOCCURRED.