We’re going to attempt a repair that we have never done before! In this video we need to repair a cracked double acting telescopic hydraulic cylinder that has a crack right around one end of the rod. This rod is from the ejector cylinder off a Caterpillar 657 Twin Drive Scraper. We show the step by step process to do the repair. First we start with the disassembly of the rod by machining in the lathe and we remove the head and inner tube from the rod. We then perform a dye penetrant crack test to check if the inner tube is cracked. We then complete the reassembly of the rod and weld the parts back together before TIG welding the end of the inner tube onto the cylinder rod. It’s another successful repair and we’ve saved our customer a lot of money with this one!

In this video we are using:
- TM-26120G Centre Lathe
- WIA 500i Weldmatic welder
- UniMig 200 AC/DC Tig 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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