NHTSA recall 98V003000
Parking brake › Conventional › Air
Freightliner Freightliner
The defect
Vehicle description: truck/trailers equipped with a hydraulic parking brake. a casting error in the hydraulic parking brake relay valve causes excessive pressure in the brake system which can result in a hydraulic hose separation.
The risk
If this occurs, the power steering assist will be lost and the brakes will be operating from the back-up system.
The remedy
Dealers will install a check valve modification kit to reduce the system pressure.