Walthers Model Trains

Features: Designed from the ground up to be a working model, this weathered and fully assembled pump has a hidden drive with a slow speed motor and gearbox that simulate the steady motion of the real thing. The design is typical of those in use since the 1920s. It features a detailed stationary diesel power plant, walking beam, rear crank and counterweight along with the horsehead front counterweight. For added realism, there's a chain link fence with a positionable gate. This operating model makes a great addition to any fuel industry scene.
...more about the Walthers Cornerstone Series(R) Built-ups -- Operating Oil Pump 2-3/4 x 1 x 1-13/16'' 6.8 x 2.5 x 4.5cm - N-Scale