Auto Recalls for Consumers

1987 OSHKOSH F Recall - Campaign #91V187000

 
Auto Recalls For Consumers

1987 OSHKOSH F RECALL - #91V187000

RECALL FOR SERVICE BRAKES, HYDRAULIC : FOUNDATION COMPONENTS : DRUM

THESE VEHICLES HAVE FRONT AXLES WITH BRAKE CAM OPERATION OPPOSITE TO THE ROTATION OF THE BRAKE DRUM (CAM OPPOSITE), AND THERE IS A TENDENCY FOR BRAKES TO CHATTER UNDER LOW AIR PRESSURE, RESULTING IN VIBRATIONS. THE VIBRATIONS INDUCE STRESSES IN THE TIE ROD END BEYOND ITS ENDURANCE LIMIT, AND RESULT IN CRACKS IN THE THREADED PORTION OF THE STUD WHERE THE TUBE ENDS.

Information provided by the National Highway Traffic Safety Administration.

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Vehicle 1987 OSHKOSH F
Manufacturer OSHKOSH TRUCK CORPORATION
Manufactured between 1/1/1985 - 4/1/1991
Recalled on 10/30/1991
Influenced by OSHKOSH TRUCK CORPORATION
Owners Notified on 11/8/1991
# Affected 130
Recalled for SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM
Description THESE VEHICLES HAVE FRONT AXLES WITH BRAKE CAM OPERATION OPPOSITE TO THE ROTATION OF THE BRAKE DRUM (CAM OPPOSITE), AND THERE IS A TENDENCY FOR BRAKES TO CHATTER UNDER LOW AIR PRESSURE, RESULTING IN VIBRATIONS. THE VIBRATIONS INDUCE STRESSES IN THE TIE ROD END BEYOND ITS ENDURANCE LIMIT, AND RESULT IN CRACKS IN THE THREADED PORTION OF THE STUD WHERE THE TUBE ENDS.
Consequences CRACKS IN THE TIE ROD CAN RESULT IN SEPARATION OF THETIE ROD AND LOSS OF VEHICLE CONTROL WITHOUT PRIOR WARNING.
Corrective action REPLACE THE CAM OPPOSITE BRAKE ACTUATION WITH CAM SAME BRAKE OPERATION, BY INTERCHANGING THE LEFT AND RIGHT CAM ASSEMBLIES TO AVOID BRAKE CHATTERING; AND REPLACE TIE RODS.
Notes SYSTEM: BRAKES AND FRONT SUSPENSION.VEHICLE DESCRIPTION: HEAVY TRUCKS WITH 18000 LBS. DRIVING FRONT AXLES.
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