Repair FAILED Hydraulic Cylinder | Part 1 | Making a New Barrel

This hydraulic cylinder failure is one of the WORST we have seen lately! The piston and seals are completely destroyed and the inside of the cylinder barrel is shredded from one end to the other. This is the stick cylinder off a Komatsu PC300 Excavator, it is a high cycle cylinder that gets a lot of use, so when things fail they can turn bad really quickly. The reason this hydraulic cylinder has failed is due to a number of reasons but it all started from the bad design of the OEM piston seals. The cast iron pressure seals are not a good idea! This video is Part 1 where we show step by step of making the new barrel. We need to remove the barrel end and head flange off the old barrel and machine up the new barrel. We also fit and weld on the ends to the new barrel using spray transfer MIG welding.

WATCH NEXT Part 2 - Making the new piston: https://www.youtube.com/watch?v=qRmXS1ibNDQ

In this video we are using:
- Hafco TM-26120G Centre Lathe
- WIA 500i Weldmatic Welder
- Hafco HPM-150T Hydraulic Press

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Видео Repair FAILED Hydraulic Cylinder | Part 1 | Making a New Barrel канала Cutting Edge Engineering Australia