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siezed motor

Try soaking the cylinders with some Sea Foam mixed with some ATF and your favorite penetrating oil and hope for the best after a week or two.

Keep putting it into the cylinders every day or two because it can get buy the rings in spots.

Depending on how long it sat I would pull the head because some of the valve seats that had valves open while it sat are probaby pretty rusty.
 
If its stuck from sitting remove the plugs and fill the cylinders with half ATF and half acetone mixture and let them soak. It may take months to free up, patience is the key. Try hanging a weight on the hand crank to put a little pressure on it. Once it comes free then take the whole thing apart and clean and fix/rebuild it.

If its seized, as in run without oil or overheated until it stopped, tear it down and rebuild it.
 
you wanna get her going then the first step is disassembly right off the bat. that soaking is the biggest waste of time i have ever seen.rust eats metal ... so there is soaking that fixes that. pull the head , take to machine shop for repair. pull pistons if possible or else push out with liners. then go from there. like these tractors are around 85 years old and thats the reason they were parked is because they are worn out!so all you need is time and money to get them goin again.good luck.
 
Soaking is not a waste of thime. It all depends on what the person wants from the tractor. I have done dozens of them that are running fine. Somtimes a person can't afford a rebuild.
 
I just soaked one for a month that was setting in the back of a barm for 24 years. The tractor is now out working the fields again and does not even smoke. Saved the owner thousands in parts, labor and machine shop fees. He's happy with it and that's all that matters.
 
It all depends on how bad the engine is stuch. I currently have an A THAT ALL YOUR MAGIC MIXES WOULD NEVER FIX. Some dummy overhauled and let sit out and get wet. You should see the rustcrud on the walls i will have to remove crank and press out sleeve and piston together. I have had a couple that were stuck and would never have been able to free up thats why i pull the head so i can see how bad the problem is.
 
Nobody ever said the soaking will free them all. It has worked for many and many you have to pound the pistons out.
No Magic about it.
 
(quoted from post at 02:18:39 09/22/10) Soaking is not a waste of thime. It all depends on what the person wants from the tractor. I have done dozens of them that are running fine. Somtimes a person can't afford a rebuild.
Click to expand...

Yep, my dad bought a ol case 310 dozer years ago with the motor stuck, we filled the cylinders with diesel fuel for several weeks then pulled it around with a tractor til it broke loose. He's put a couple thousand hours on it since then and it runs great, doesn't even burn much oil considering its age.

Some might be too far gone to free up, but it works most of the time.
 
looks like im gonna tear it down im not familiar with the 15 30 does it have sleeves and what are the pistons made of?
 
I recently helped get a 175c crawler loader running about 9 years of sitting in the weather. The motor was seized and the cylinders were full of water. However, after head was off we soaked the cylinders with P B'laster penetrating oil for a few days and then got a big socket for a 1" drive impact gun, or basically something that can take some abuse. We put the socket on top of the piston that was seized and beat on it with a sledge hammer. Don't smack the piston if the pistons near TDC. When the piston would move a little we'd change pistons and try to move that one. The pistons eventually moved and then after she spun freely we pulled the pistons and did a nice cleaning of the cylinders. Put her all back together and been running great ever since.
 
wet sleeves and cast pistons. sure can tell no mechanical teachers gave advice here. i know they will run once freed up but its when you pullem apart the water damage is pretty evident. pitted cyls, rings stuck in grooves, pitted valves and so on. even leaving the exhaust uncoverd in rain does damage in a short period of time not counting letting the pistons seize up. the only time water belongs in an engine is when you trickle it in while running to remove carbon for example. unless its a john deere D that used water injection when pulling heavy. all my tractors have the million dollar exhaust cans.
 
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