BARRETT P 1985: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM

Make : BARRETT Model : P Year : 1985
Build Dates : 1985-01-01 - 1991-04-01
NHTSA CAMPAIGN ID Number : 91V187000
Date Owner's Notified: 1991-11-08 Date Received by ODI: 1991-10-27 Date Added to Database: 1991-10-30
Manufacturers Involved: Oshkosh Corporation
Manufacturer's Responsible for the Recall:
Manufacturer Campaign Number:
Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM
Potential Number Of Units Affected : 130
Summary:
      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.
Consequence:
      CRACKS IN THE TIE ROD CAN RESULT IN SEPARATION OF THETIE ROD AND LOSS OF VEHICLE CONTROL WITHOUT PRIOR WARNING.
Remedy:
      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.
Report Initiator: MFR V Report
Regulation Part Number: Federal Motor Vehicle Safety Standard Number:
Notes:
      SYSTEM: BRAKES AND FRONT SUSPENSION.VEHICLE DESCRIPTION: HEAVY TRUCKS WITH 18000 LBS. DRIVING FRONT AXLES.