OFFICIAL NHTSA RECALL
78V086000
Service Brakes, Air:antilock:control Unit/module
Reported Apr 19, 1978 · FREIGHTLINER CORP.
Summary
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.
Consequence
Not supplied in the source record.
Remedy
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.
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Vehicle entries in this campaign
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