Sorry, but I am not real familiar with the A/C tractors. Although I have had to remove a few pistons from various different makes and models of tractors, cars, pickups, etc. What you will need to do is use a Ridge Reamer on the cylinders. It sounds like you have ALOT of wear on that engine if you are unable to push the pistons out with a wooden bock and hammer. The ridge reamer is not hard to use, and you should be able to purchase one from your NAPA Auto Parts Store, SEARS, most of your Tool Dealers (Mac, Snap-On etc.) Put the connecting rod cap back on the connecting rod and run the piston up to top dead center. Then set the ridge reamer into the cylinder and adjust the cutting edge. You should be able to operate the tool with a 3/8" ratchet and socket. You may have to re adjust the cutting edge a few times before you get the top area of the cylinder wall cut flush with the rest of the cylinder or cut enough to remove the piston. Prior to joining the military, I worked for quite a few years in a few repair shops and dealership, plus on my own. Am looking forward to when I will be getting out. I hope to go into the repair and restoration on the side and hopefully make enough money at to support the hobby. Good Luck with your project, I hope it all turns out well.
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