NHTSA Campaign Id 79V017000; Date: Jan. 12, 1979
Recalled Vehicles:1977 Mack DM; 1978 Mack DM; 1977 Mack R; 1978 Mack R; 1977 Mack RD; 1978 Mack RD; 1977 Mack U; 1978 Mack U
Component: Suspension:multiple Axle
Manufactured by: Mack Trucks, Incorporated
Affected Units:: 4,000
Recall Summary:A casting deficiency exists in the lower section of the caps resulting in a reduction in the thickness of the material. Failure of a cap can allow the end of the rear spring to detach from the axle housing.
How to Fix:Dealer will inspect and, if necessary, replace any of the spring insulator caps found to be defective. This will be done at no cost to owner.
Recall Notes:Vehicle description: trucks, heavy. System: suspension; insulator cap. Consequences of defect: loss of vehicle control can result and lead to avehicle accident.
Date Owners notified by Manufacturer: Aug 13, 1979
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