Abstract: Apparatus for repairing a section of chain having a closed rectangular frame and a hydraulic ram located within the confines of the frame. The frame has a pair of spaced parallel side rails, a front end member connecting one end of the side rails, and a rear end member connecting the other end of the side rails. Each side rail has a U-shaped downwardly opening notch located between the front end member and the rear end member to lie over a chain to be worked on. An anvil is located on a face of the front end member and the front member is removably connected to the side rails so it may be reversed relative to the side rails to locate the anvil within the confines of the frame when connecting chain sections and outside of the confines of the frame when disconnecting chain sections. The ram has a first head which contacts chain connecting pins to disconnect chain sections and a second head which contacts a link to connect chain sections.