1987 CHEVROLET B6P042 Recalls

Item Affected: SERVICE BRAKES, AIR:DRUM:CHAMBER

Date Announced: 08/03/1987

Description of Recall: 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.

Conequence: 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.

Action Need To Fix It: AS NECESSARY, INSTALL NEW REINFORCED FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE ON VEHICLES WITHOUT ONE.

Notes: SYSTEM: BRAKESVEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH 7,500 LB. FRONT AXLE AND MEDIUMDUTY TRUCKS EQUIPPED WITH A 7,000 LB. FRONT AXLE.

Item Affected: SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS

Date Announced: 08/16/1988

Description of Recall: MELTING OF THE AIR BRAKE LINES CAN OCCUR WHERE THE AIR LINES ROUTE UNDER THE LEFT HAND FRAME RAIL NEAR THE EXHAUST PIPE.

Conequence: THIS COULD RESULT IN PARTIAL OR TOTAL LOSS OF SERVICEBRAKES WITHOUT WARNING, WHICH COULD LEAD TO A VEHICLE CRASH.

Action Need To Fix It: REROUTE AIR LINE HARNESS AWAY FROM THE EXHAUST SYSTEM; REPLACE HARNESS IF HEAT DETERIORATION HAS OCCURED.

Notes: SYSTEM: AIR BRAKE LINES.VEHICLE DESCRIPTION: COWL MODEL SCHOOL BUSES WITH AIR BRAKES AND GASOLINEENGINES.