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It is under a ACF centerflow hopper used to transport plastic pellets. It appears to be connected to the air system. The lever is resting on the truck frame and the valve and actuator are attached to the car. Anti-sway indicator or does it apply brakes or it may dampen the sway action? I know that in the days before vented hatch covers, if you were walking on top of the car you could get it to rock from side to side, so maybe it doesn't take a lot of force to dampen the motion. Tom

What Is It.jpg

Chris de Vries

"They fixed these cars?"
Looks like a load/empty sensor for when the brakes are applied.

These things are a great benefit as they can limit the amount of air put into the cylinder during heavy brake applications. Wheels are a lot less likely to skid with these, when they are working properly


Thank You. Always interesting the things you see when it is standing still and you are really close to it. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to - An online railroad bookstore featuring a curated selection of new and used railroad books. Railroad pictorials, railroad history, steam locomotives, passenger trains, modern railroading. Hundreds of titles available, most at discount prices! We also have a video and children's book section. - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.

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