Railroad cars carry huge loads, typically 250,000 lb. That capacity makes them very economical for long-distance freight transfer. But until the 1950s, moving rail cars very short distances — such as from one track or train to another — was costly and time consuming. The procedure required a conventional switching locomotive, an engineer to operate it, and a switchman to assist. Trackmobile takes advantage of electrohydraulic cartridge valve manifolds and controls to provide stable transfer for railroad car movers....
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