NHTSA recall 86V072000
Service brakes, air › Drum
Thayco Thayco
Reported May 28, 1986180 vehicles affectedTHAYCO MANAFACTURING CO.
The defect
A resonant vibration can be initiated under certain operating conditions, causing a deterioration of the brake chamber which results in reverse brake cam rotation creating grabby brakes, brake chatter, or spring brake damage. consequence of defect: if this occurs, complete brake failure could be experienced, and could lead to an accident.
The remedy
Remove spring seats, reverse the axle, reweld and assemble suspension.