How to effect the hydraulic connection?

The hammer and the excavator are joined by flexible rubber hoses. These hoses are connected to the hammer by one side and by the other side to the excavator by taps of exit and entry, welded to the excavator arm. The connection of the hose to the hammer can take place through nipples and swivels. The entry point is indicated with the sign IN. 

Before fixing the tool you should add some molybdenum disulfide grease on its upper part to be inserted inside the hammer as suggested by HAMMER SRL.