I have 503 industrial with a front end loader and back hoe I have about 300 hours on a engine rebuilt. I has set for a couple of years. I decided to sell it this year but while getting it running I had a lot of blue smoke and a knocking in the engine. I pulled the valve cover and I found two bent push rods, and one missing push rods.
I replaced them but could not find the missing push rod in the upper end. I also poured some
Rislow over the valves and re-adjusted the valve lash, and it was smoking a lot less. but still smoking. I pulled the Oil pan, and found it had spun a rod bearing to little pieces and I have another rod that's a little sloppy on the crank. It also acts like it has stuck rings. Right now I guess I would be looking at a used crankshaft, lower end rebuilt kit at least one connecting rod. Plus some seals on the rear axles Would I be better off? 1. fixing it
2. calling the junk yard and having it hauled off.
3. parting it out and making every one who need 504 parts a really good deal
4. Filling the wash out with the tractor instead of using the tractor to fill the washout. At the moment I amd strongly in favor of 4.
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