Mack TRUCK

Published

1986-01-22

Model years

1979–1985

THE SPRING EYE BOLT ON THE TAPER LEAF SPRINGS MAY NOT HAVE BEEN TORQUED PROPERLY IN PRODUCTION AND COULD EVENTUALLY FAIL DUE TO THE LOOSE FIT WITHIN THE SPRING EYE BUSHING/HANGER BRACKET. THIS FAILURE WOULD ALLOW THE SPRING TO FALL DOWN ONTO THE ROAD SURFACE WITHOUT WARNING TO THE OPERATOR. THIS CONDITION WOULD HAVE GREAT POTENTIAL FOR VEHICLE CRASH BECAUSE OF THE SUDDEN DRAG OF THE SPRING ON THE ROAD SURFACE CAUSING VEHICLE CONTROL PROBLEMS. TRUCKS EQUIPPED WITH ST34 OR ST38 SERIES REAR AXLES.