FREIGHTLINER UNSPECIFIED 1988: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE

General Information

NHTSA Campaign ID Number: 89V129000

Make Model Year
FREIGHTLINER UNSPECIFIED 1988
Date Owners Notified Date Received by ODI Date Added to Database
1989-09-27 1989-08-07 1989-08-12

Production Dates: 1988-06-01 - 1988-08-01

Manufacturers Involved: FREIGHTLINER LLC

Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE

Potential Number Of Units Affected: 41

Report Initiator: MFR MFR Report

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.