NHTSA Campaign Id 89V129000; Date: Aug. 7, 1989
Reduced braking creates the potential for an accident.
Recalled Vehicles:1988 Freightliner Freightliner
Component: Service Brakes, Hydraulic:foundation Components:differential Proportional Valve
Manufactured by: Freightliner Corp.
Affected Units:: 41
Recall Summary:Trucks will experience reduced braking at low brake application pressures when operating in the bobtail mode.
How to Fix:Replace front axle ratio valves with standard valving that does not reduce application pressure.
Recall Notes:System:brakes. Vehicle description:heavy duty trucks equipped with rear axle bobtail brakeproportioning and front axle brake ratio valves.
Date Owners notified by Manufacturer: Sep 27, 1989
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