NHTSA Campaign Id 81V089000; Date: Jul. 14, 1981
1980 Mack Ms300p; 1981 Mack Ms300p; 1980 Mack Ms300t; 1981 Mack Ms300t
Component: Power Train:driveline
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 500
Holes drilled in the rear axle yokes to balance them could cause a failure of the yoke.
Vehicles will be inspected and all defective yokes will be replaced with yokes without holes.
Vehicle description: trucks. System: suspension; rear axle yoke. Consequences of defect: the yoke could fail without warning during vehicleoperation, possibly causing loss of vehicle control and an accident. Also, thefailure could cause shrapnel to be propelled outward from the vehicle, injuringanyone within close proximity. Note: the failure is most likely to occur when the vehicle is first started orwhile driving at moderate or high speeds in a heavy torque condition.
Date Owners notified by Manufacturer: Jan 25, 1982
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