Abstract: A railroad tie replacing device (10) including a support frame (11) on rollers (22) for movement over a series of parallel railroad tracks (28) supported by railroad ties (29). A main piston or cylinder (15) is positioned such that the stroke of the piston rod is horizontally toward and away from the rails. A gripping mechanism (23) is arranged on the main cylinder rod and is capable of gripping a railroad support to be replaced. The main cylinder and an attached spacer (24) for securing the invention to the rail during operation are lowered over the rail by a lift cylinder (18). Upon operation, the grippers are closed over a tie to be removed and the main cylinder is activated. The outward stroke of the main cylinder piston rod with appended gripper mechanisms pulls the tie from beneath the rails.