-- GaryHammond --
This is a boring tool that I created for my neighbor, John Gage, to use in his business. It consists of a hydraulic motor, (powered by a loader/backhoe tractor), driving a water injector valve coupled to any number of 7' lengths of 3/4" pipe. The hydraulic motor is mounted in a hand advanced trolly that rides on a 4" I-beam. The tool is used for boring under pavement and can accept several different sized boring heads as well as special attachments for pulling conduit back through the bored hole.
With Trolley Assembly Mounted
Water Injection Valve
With Trolley Assembly Unmounted