I figured out why they're called backhoes! You spend a lot of your time on your back laying under a hoe to keep an old one running! My JD has been in the woods for over 15 years, it lasted 3 weeks after Ontrac got me for $13,860 to fix the hydraulics. After that it would drive forward about 50 feet forward and then stop. You could then back up and you'd have to shut it off.. let the hydraulic fluid drain back and then you could drive it another 50 feet forward. All the hydraulics shuttered, nothing had any pressure and I get fed up and parked it. Big John is driving again after another 6 hours on my back. Who designs this **** where you have to pull 1/2 the machine apart to get at hose fittings?
Need to remove the valve block between the two filters. I got the machine working back in the Fall after tearing all the other check valves and bypass valves apart only to have oil pissing out between that high pressure valve block and the main case.
My "bed" for the day.
Filter canister off, then the return line off, just so I can get at the 90* fitting nut to disconnect it from the hose. Then the 90* fitting off so I can get at the valve block bolt. Both front pressure lines off the block.
Block out and obvious what's wrong.
AV Gas, the best cleaner on earth...
Three full O ring kits and do you think any of them had the larger O ring. Fluke'd out on that by checking my aircraft spares and it's the same size as my amphibious float brake caliper piston O rings! Day saver there....
Wasn't going to go buy a new $500 x 8D battery until I know she moves under her own power. Took the new 27 series out of the '66 Satellite! I've always had luck with my Mopars starting...
Drove her out of the woods and to the hangar to pump up the old tires. Original to the machine, 1976. They still hold air despite being cracked to ****. All the hydraulics work great, no shuttering and I drove around and around in a circle on a path in the woods for almost 30 minutes without issue.