NHTSA Campaign Id 75V190000; Date: Oct. 31, 1975
1974 Mack DM; 1975 Mack DM; 1974 Mack R; 1975 Mack R; 1974 Mack RD; 1975 Mack RD; 1974 Mack U; 1975 Mack U
Component: Service Brakes, Air:antilock:interconnecting Assembly(wiring)
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 3,400
Mack campaign no q1010. Trucks sept. 1974 thru July 17, 1975. Possibilitythat the power and warning light lead from the anti-wheel lock controller forthe steering axle may have been inadvertently connected incorrectly to a wheelsensor cable. If this occurs,the controller on the steering axle would not bepowered nor would the anti-wheel lock warning light indicate thenon-functioning condition to the driver. The absence of anti-wheel lockcapability on the steering axle, along with the absence of anti-wheel lockwarning light indication, could result in impaired vehicle control, should thedriver undertake a panic stop in slippery road conditions. (correct byinspecting and properly connect wiring to anti-wheel lock controller).
Date Owners notified by Manufacturer: Feb 23, 1976
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