FREIGHTLINER UNSPECIFIED 1978: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

General Information

NHTSA Campaign ID Number: 78V146000

Make Model Year
FREIGHTLINER UNSPECIFIED 1978
Date Owners Notified Date Received by ODI Date Added to Database
1978-09-11 1978-06-21 1979-10-12

Production Dates: 1977-07-01 - 1978-03-01

Manufacturers Involved: FREIGHTLINER LLC

Component: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

Potential Number Of Units Affected: 65

Report Initiator: MFR MFR Report

Summary

THE CHECK VALVE, LOCATED ON THE INLET SIDE OF THE PRIMARY AND SECONDARY AIR TANKS MAY CRACK IN THE FEMALE FITTING AREA AND CAUSE A SLOW LOSS OF AIR. A LEAKING VALVE WILL REDUCE AIR PRESSURE AND PARTIAL OR COMPLETE LOSS OF BRAKES ON THOSE AXLES THAT DEPEND UPON THAT PART OF THE SYSTEM COULD OCCUR.

Remedy

THE DEALER WILL INSPECT AND, IF NECESSARY, INSTALL NEW AIR CHECK VALVES.

Notes

VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: SERVICE BRAKES; AIR CHECK VALVE.CONSEQUENCES OF DEFECT: PARTIAL OR COMPLETE LOSS OF BRAKING CAPABILITY COULDRESULT IN LOSS OF VEHICLE CONTROL AND AN ACCIDENT. UNDER SOME CONDITIONS, THEEMERGENCY BRAKES MAY AUTOMATICALLY ACTIVATE, POSSIBLY ALLOWING THE DRIVERSUFFICIENT TIME TO SELECT A SAFE PLACE TO PULL OFF THE HIGHWAY.NOTE: EACH CHECK VALVE SHOULD IMMEDIATELY BE INSPECTED FOR A LEAK. IF ONE ISFOUND, THE DEALER SHOULD BE CONTACTED IMMEDIATELY.