In this video we are line boring and bore welding to repair a Caterpillar D10 Dozer push arm. The bushings are oversized so we are welding them up and boring them out to bring them back to size for standard bushings. We are using our Sir Meccanica WS2 portable inline boring and bore welding machine. First is setting up and tack welding on the bearing mounts for positioning the line boring machine. We need to line bore out the eye material before bore welding to build up new material and then boring out to spec. The job is completed by cleaning up the eye surfaces and cryo freeze shrink fitting the new bushings using liquid nitrogen.

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Our channel is all about showing you real life machining work from our workshop on the Gold Coast Australia. We specialize in manual machining, hydraulic repairs and heavy fabrication for the earth moving, mining and civil construction industries. So if you're a machinist that wants to see some big gear in action be sure to subscribe to our channel right now. We upload new videos every week that show lathe machining, milling, welding and all the good stuff that comes from a machining workshop. If that sounds like something that you would enjoy seeing, then make sure to join us by subscribing!

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