1989 MACK CF Recall - Campaign #91V080000

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1989 MACK CF RECALL - #91V080000

RECALL FOR STEERING : HYDRAULIC POWER ASSIST SYSTEM

INCORRECT MANUFACTURE OF THE HYDROBOOST CYLINDER ALLOWS THE BALL SOCKET CLAMP TO CONTACT RIGHT SIDE STEERING LEVER ON AN EXTREME LEFT TURN AND CAUSE FLEXING OF THE CYLINDER ROD .

Information provided by the National Highway Traffic Safety Administration.

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Vehicle 1989 MACK CF Manufacturer MACK TRUCKS, INCORPORATED Manufactured between 3/1/1988 - 6/1/1989 Recalled on 5/24/1991 Influenced by OFFICE OF DEFECTS INVESTIGATION Owners Notified on 5/2/1991 # Affected 35 Recalled for STEERING:HYDRAULIC POWER ASSIST SYSTEM Description INCORRECT MANUFACTURE OF THE HYDROBOOST CYLINDER ALLOWS THE BALL SOCKET CLAMP TO CONTACT RIGHT SIDE STEERING LEVER ON AN EXTREME LEFT TURN AND CAUSE FLEXING OF THE CYLINDER ROD . Consequences THIS FLEXING CAN CAUSE SEAL FAILURE OR CYLINDER FAILUREOF THE HYDROBOOST UNIT AND RESULT IN LOSS OF STEERING CONTROL AND RESULT IN AVEHICLE ACCIDENT. Corrective action REPLACE INCORRECTLY BUILT BOOST CYLINDERS. Notes SYSTEM: STEERING POWER ASSIST, HYDROBOOST ASSEMBLY.VEHICLE DESCRIPTION: CF AERIALSCOPE MODEL. See also 1989 MACK CF Recall for SERVICE BRAKES, AIR, SUPPLY, HOSES, LINES/PIPING, AND FITTINGS 1989 MACK CF Recall for STEERING, LINKAGES 1989 MACK CF Recall for VEHICLE SPEED CONTROL