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Let your imagination run wild. How do you think you would get your worn rings out of the engine? Push the piston UP thru the block? well maybe. But think about what is wearing, the rings, well yeah BUT the piston walls are also wearing and actually will create a ring breaking ridge at the top of the piston stroke in the piston walls. So most remove their pistons DOWN thru the block...but WOOPS....theres a crankshaft innna the way. So now ya gotta remove the crankshaft and flywheel and before you can get the crankshaft out you gotta get the oilpump outta the way. Then think about what else just might have worn in that ol'engine besides the rings. Why the bearings. That is why they are made to be replaced. But think about this, if the bearings are worn, what about the crank journals? The main bearings and the rod bearings. They all need to be "miked" for taper and out of round and total wear. Then if'n the crank journals are worn, the whole crank needs to be appropriately machined. And only then can you "order" the correct size bearings. You'll need to remove the engine to take the engine to a machine shop to have the valves ground, crankshaft bearings ground, new sleaves installed. Don't forget the engine IS the chassis, that is why you have to split the tractor. So you see, just replacing the rings is not like replacing some sparkplugs, it opens up a whole new can of worms. You are wize to be seeking counsel from those that have been there. Splitting is trivial, its all the other stuff that'll gettcha..... .....respectfully, Dell
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