Seized Piston & Damaged Threads: Can This Cylinder Rod Be Saved?

We’ve got a severely damaged bucket cylinder rod from a 120 Tonne Komatsu mining excavator in the shop — the piston is seized solid and the threads are in rough shape. Instead of scrapping it, we’re seeing if it can be salvaged! First step is getting it set up in the lathe, changing to our 4 jaw chuck and getting everything dialled in straight. Once we’ve got the steady rest supporting it, we start machining the piston off — but hit some hard spots from heat damage that chew through inserts fast. Once we’re through the tough stuff, we reveal the threaded area — and thankfully, it's not a total loss. Then it’s time for the tricky part… chasing the threads on the lathe with precision and some serious coordination. With the threads cleaned up and the damaged piston finally remove we finish it off using our shop-made tool post grinder to linish the rod and bring back the surface finish. This job was a real test of precision and patience but a good result when everything comes together. In this video we're using our @Machineryhouse1930 Hafco TM-26120G Lathe. Join our channel: We upload new videos every Friday at 5pm AEST! If you want to see more of our videos click LIKE & SUBSCRIBE! You can subscribe to our channel here: https://bit.ly/ceesubscribe Want Early Access & Ad Free videos?? Join our Patreon Community: https://www.patreon.com/cuttingedgeengineering Official CEE Merch shop: https://www.ceeshop.com.au Check out our CEE Amazon store and explore our favourite finds that we use in the workshop: https://www.amazon.com/shop/cuttingedgeengineeringaustralia To see more follow us on online here: TikTok: https://vt.tiktok.com/ZSdHhtN4h/ Instagram https://instagram.com/cutting_edge_engineering Facebook https://www.facebook.com/cuttingedgeengineeringaustralia/ About Us: We're a down-to-earth real life machining and fabrication workshop in Australia. We specialise in helping business in mining and earthmoving to keep their machines running smoothly. We love working on broken parts and the bigger the better! We upload new videos every week showcasing machining, welding, line boring, honing and all the other awesome stuff that goes down in our workshop. Learn how we tackle different projects and see the satisfaction of creating something useful. Subscribe to stay updated on our latest jobs and projects! Follow us on Patreon for even more content and behind-the-scenes glimpses or find us on Tiktok, Facebook and Instagram for a chance to connect with us. #australianmachinist #machineshop #machinist #hfcreators