OFFICIAL NHTSA RECALL
89V129000
Service Brakes, Hydraulic:foundation Components:differential Proportional Valve
Reported Aug 7, 1989 · FREIGHTLINER CORP.
Summary
TRUCKS WILL EXPERIENCE REDUCED BRAKING AT LOW BRAKE APPLICATION PRESSURES WHEN OPERATING IN THE BOBTAIL MODE.
Consequence
REDUCED BRAKING CREATES THE POTENTIAL FOR AN ACCIDENT.
Remedy
REPLACE FRONT AXLE RATIO VALVES WITH STANDARD VALVING THAT DOES NOT REDUCE APPLICATION PRESSURE.
Notes
SYSTEM:BRAKES.VEHICLE DESCRIPTION:HEAVY DUTY TRUCKS EQUIPPED WITH REAR AXLE BOBTAIL BRAKEPROPORTIONING AND FRONT AXLE BRAKE RATIO VALVES.
This campaign page uses the representative official campaign record. Applicability-specific source variants appear on the linked vehicle pages. Recall counts refer to campaigns, not affected vehicles.
Vehicle entries in this campaign
This is model-level recall history. It does not confirm whether a particular VIN is affected or has received the repair. Check with NHTSA ↗