Item Affected: PARKING BRAKE:DRIVELINE:AIR
Date Announced: 12/20/1985
Description of Recall: THE HYDRAULIC PARKING BRAKE CONTROL VALVE MAY INADVERTENTLY ACTIVATE DUE TO MOMENTARY PRESSURE DISRUPTIONS WITHIN THE SYSTEM AND CAUSE THE PARKING BRAKE TO BE APPLIED, STOPPING OR SLOWING THE TRUCK UNEXPECTEDLY. CONSEQUENCE OF DEFECT: THIS UNEXPECTED STOPPING OR SLOWING OF THE TRUCK MAY INCREASE THE RISK OF A REAR END COLLISION SINCE THE BRAKE (STOP) LIGHTS ARE NOT ACTIVATED. ALSO, ON CERTAIN ROAD CONDITIONS THIS OCCURRENCE MAY RESULT IN LOSS OF VEHICLE CONTROL WHICH WOULD LEAD TO AN ACCIDENT.
Conequence:
Action Need To Fix It: REPLACE THE PUSH-PULL TYPE BRAKE CONTROL VALVE WITH NEW OVER-CENTER CAM TYPE VALVES.
Notes: SYSTEM: HYDRAULIC PARKING BRAKE CONTROL VALVE. VEHICLE DESCRIPTION: MEDIUM AND HEAVY TRUCK AND BUS CHASSIS EQUIPPED WITH HYDRAULIC BRAKES.
Item Affected: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN
Date Announced: 12/28/1983
Description of Recall: CRACKS MAY DEVELOP IN THE SPIDER MEMBER OF SEVEN BLADE FANS DUE TO VIBRATIONS OF GREATER SEVERITY THAN ANTICIPATED. THE CRACKS MAY PROGRESS TO THE POINT OF FRACTURE AND ALLOW PORTIONS OF THE SPIDER ARMS AND ATTACHED BLADES TO SEPARATE.
Conequence:
Action Need To Fix It: DEALER WILL REPLACE THE FAN WITH ONE OF AN IMPROVED DESIGN.
Notes: VEHICLE DESCRIPTION: HEAVY TRUCKS EQUIPPED WITH CATERPILLER 3208 OR DETROITDIESEL 8.2 LITER ENGINES.SYSTEM: ENGINE AND ENGINE COOLING; COOLING FAN.CONSEQUENCES OF DEFECT: HIGH SPEED METAL FRAGMENTS FROM A ROTATING FAN MAYCAUSE DAMAGE IN THE ENGINE COMPARTMENT. IF THE CAB IS RAISED AT THE TIME OFFRACTURE, THERE MAY BE SERIOUS INJURY TO NEARBY PERSONS.
