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Thomas Bus Recall 92V078: Service Brakes, Air:Supply:Hoses, Lines/Piping, And Fittings

NHTSA campaign 92V078, reported May 19, 1992, 24 vehicles potentially affected.

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The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 92V078THOMAS BUILT BUSES, INC.
Component
SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS
Problem
A BRAKE AIR LINE PLUMBING ERROR CAUSES THE SPRING BRAKES TO BE APPLIED WITHOUT BRAKE APPLICATION WHEN THE AIR PRESSURE IN THE PRIMARY TANK DROPS TO A LEVEL WHICH AUTOMATICALLY ACTIVATES THE SPRING BRAKE SYSTEM.
Risk
ACTIVATION OF THE SPRING BRAKE SYSTEM WITHOUT OPERATORBRAKE APPLICATION WILL CAUSE THE SPRING BRAKE TO BE APPLIED, LOCKING THE BRAKESWITHOUT ANY WARNING TO THE OPERATOR.
Remedy
REPLACE AND REROUTE AIR BRAKE HOSE TO COMPLY WITH FMVSS 121.
Notes
SYSTEM: AIR BRAKES, FMVSS 121.VEHICLE DESCRIPTION:BUSES AND SCHOOL BUSES.

Affected vehicles

Thomas Bus1992
Thomas School Bus1992