KENWORTH UNSPECIFIED 1992: SERVICE BRAKES, AIR:DRUM:CHAMBER

General Information

NHTSA Campaign ID Number: 92V069000

Make Model Year
KENWORTH UNSPECIFIED 1992
Date Owners Notified Date Received by ODI Date Added to Database
1992-07-13 1992-05-13 1992-05-20

Production Dates: 1992-02-01 - 1992-04-01

Manufacturers Involved: PACCAR Incorporated

Component: SERVICE BRAKES, AIR:DRUM:CHAMBER

Potential Number Of Units Affected: 1500

Report Initiator: MFR MFR Report

Summary

A CRACK IN THE DIE CAST ALUMINUM HOUSING OF THE BRAKE CHAMBER CAUSES A LOSS OF AIR PRESSURE IN THE CHAMBER. LOSS OF AIR PRESSURE CAUSES THE SPRING BRAKES TO BE APPLIED.

Consequence

LOSS OF AIR PRESSURE IN THE HOUSING OF THE BRAKE CHAMBERAND THE SUBSEQUENT APPLICATION OF THE SPRING BRAKES DISABLES THE TRUCK WITHOUTPRIOR WARNING AND COULD CAUSE A VEHICLE ACCIDENT.

Remedy

REPAIR OR REPLACE THE SUSPECT MGM BRAKE CHAMBERS.

Notes

SYSTEM: AIR BRAKES.VEHICLE DESCRIPTION: HEAVY TRUCKS WITH MGM BRAKE CHAMBERS, PART NUMBERS3430086, 3430087, 3430096, 3430097, 3431057, AND 3431058.