Thanks to FridayParts for supplying free filters and water pump for this project. They did well considering we didn't know the model or year of the machine.
Check out their website here https://www.fridayparts.com/

We took on the challenge of restoring the cheapest excavator in New Zealand—a vintage 12ton Kobelco with years of wear and tear. With a leaking radiator, faulty water pump, damaged gaskets, dirty fluids and a hydraulic oil cooler that needed serious attention, this digger was on its last legs. Watch as we give it a full service, change every filter, oil.
Now, it runs like a swiss watch, ready to tackle any job!
Can this bargain digger prove its worth? Tune in to see how we made it happen!"