MACK R 1974: SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
NHTSA Campaign ID Number: 78V068000
| Make | Model | Year |
|---|---|---|
| MACK | R | 1974 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1978-09-01 | 1978-04-04 | 1979-10-12 |
Production Dates: 1974-10-01 - 1976-03-01
Manufacturers Involved: Mack Trucks, Inc.
Component: SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
Potential Number Of Units Affected: 9700
Report Initiator: ODI ODI Report
AN AXLE "NO BRAKE" CONDITION COULD RESULT FROM AN EATON CONTROLLER INTERNAL ELECTRICAL MALFUNCTION. THIS CONDITION MAY CAUSE THE ANTI-WHEEL LOCK VALVE SOLENOID TO BE CONTINUOUSLY ENERGIZED AND PREVENT THE BRAKES FROM BEING APPLIED ON ONE OF THE AXLES. AS A RESULT, THE ANTI-WHEEL LOCK WARNING LAMP IS NOT ACTIVATED.
THE DEALER WILL INSPECT AND, IF NECESSARY, REPLACE THE ANTI-WHEEL LOCK CONTROLLER WITHOUT CHARGE TO OWNER.
VEHICLE DESCRIPTION: TRUCKS EQUIPPED WITH EATON 21 ANTI-LOCK CONTROLLERS.SYSTEM: SERVICE BRAKES; ANTI-WHEEL LOCK SOLENOID.CONSEQUENCES OF DEFECT: LOSS OF BRAKES ON ANY ONE AXLE WILL RESULT IN EXTENDEDVEHICLE STOPPING DISTANCES, WHICH COULD LEAD TO A VEHICLE ACCIDENT.
