NHTSA recall 89V129000
Service brakes, hydraulic › Foundation components › Differential proportional valve
Freightliner Freightliner
The defect
Trucks will experience reduced braking at low brake application pressures when operating in the bobtail mode.
The risk
Reduced braking creates the potential for an accident.
The remedy
Replace front axle ratio valves with standard valving that does not reduce application pressure.