GMC B6P042 1986: SERVICE BRAKES, AIR:DRUM:CHAMBER

Make : GMC Model : B6P042 Year : 1986
Build Dates : 1982-10-01 - 1987-06-01
NHTSA CAMPAIGN ID Number : 87V121000
Date Owner's Notified: 1987-08-06 Date Received by ODI: 1987-08-03 Date Added to Database: 1987-08-07
Manufacturers Involved: General Motors LLC
Manufacturer's Responsible for the Recall:
Manufacturer Campaign Number:
Component: SERVICE BRAKES, AIR:DRUM:CHAMBER
Potential Number Of Units Affected : 7870
Summary:
      SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION.
Consequence:
      BRACKETS CAN BREAK, RESULTING IN LOSS OF BRAKING ABILITYAT THAT FRONT WHEEL, AND POSSIBLY RESTRICTED STEERING, WHICH COULD LEAD TO AVEHICLE CRASH WITHOUT PRIOR WARNING.
Remedy:
      AS NECESSARY, INSTALL NEW REINFORCED FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE ON VEHICLES WITHOUT ONE.
Report Initiator: MFR V Report
Regulation Part Number: Federal Motor Vehicle Safety Standard Number:
Notes:
      SYSTEM: BRAKESVEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH 7,500 LB. FRONT AXLE AND MEDIUMDUTY TRUCKS EQUIPPED WITH A 7,000 LB. FRONT AXLE.