Defect summary
TWO SCREWS THAT HOLD DETENT RAIL TO VALVE BODY CAN LOOSEN AND BACK OUT. ALSO, VALVE BODY CAN BREAK AT POINT WHERE DETENT RAIL ATTACHING SCREWS ARE THREADED INTO BODY.
Consequence
DETENT RAIL WOULD BECOME FREE RESULTING IN PARKING BRAKECONTROL HANDLE JAMMING AND NOT RELEASING OR ENGAGING THE PARKING BRAKE.
Remedy
REPLACE SUSPECT VALVE WITH IMPROVED VALVE.
Notes
SYSTEM: PARKING BRAKE CONTROL VALVE.VEHICLE DESCRIPTION: CHASSIS CAB, CUTAWAY CAB, AND STRIPPED CHASSIS MODELS10-14AS, 12-14, 15-14, 18-14, AND 23-16.
Source: NHTSA ODI recalls file, campaign 90V161000. Text as published by NHTSA.