In this video we are line boring and bore welding to repair a Quick Hitch (quick coupling) off a Komatsu PC300 Excavator. The pin positions on the quick hitch have a failed repair by someone else and the weld layer is delaminating and breaking apart so we need to weld them up and bore them out to spec. We also need to repair the spacer plates that have a cracked weld. This shows the step by step process to repair the pin positions using our Sir Meccanica WS2 portable line boring machine. There is also some air arc gouging and welding to repair the cracked welds on the spacer plates.

In this video we are using:
Sir Meccanica WS2 Portable line boring machine
WIA weldmatic 500i welder

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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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