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This article discusses the process of maintenance of railway automation devices. The aim of the work is to reduce labor costs for maintenance of track circuits of railway automation. Presents the method for automating the process of checking on the shunt track circuits shunting sensitivity of track circuit by at cross-rack and scheme of the device that implements this method. The values of shunt resistance equivalent to the imposition of regulatory shunt at predetermined points of the track circuit are calculated. The results obtained in the paper can be used for the improvement of systems of automation of existing railways.