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NHTSA Campaign 92V078000

SERVICE BRAKES, AIR:SUPPLY:HOSES, LINES/PIPING, AND FITTINGS

Issued by THOMAS BUILT BUSES, INC. · Reported May 19, 1992 · 24 vehicles affected

What's wrong

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.

Consequence

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.

Vehicles affected by this recall

Make Model Year Units
THOMAS BUS 1992 24
THOMAS SCHOOL BUS 1992 24

Source: NHTSA Campaign 92V078000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.