1984 MACK MR600P Recall

Campaign:: 85V159000 on 12/03/1985
Component:: Parking brake:driveline:hydraulic:hoses, lines/piping, and fittings
Manufactured:: 06/30/1984 - 09/30/1985
Affected:: 3,308
Defect:: The quick release valve support bracket mounted on the axle may crack. this causes fatigue failure of the steel air lines leading to the rear parking brakes and chassis service brakes resulting in sudden loss of air pressure. consequence of defect: this sudden loss of air to the brake chambers will result in automatic actuation of rear parking brake causing sudden rear wheel lockup which may contribute to an accident.
Correction:: Install a redesigned valve support bracket.
Notes:: System: parking brakes air lines, quick release valve bracket.vehicle description: mid-liner trucks.