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Engine stuck

1

1939farmall

Member
I?m working on a Farmall M for a friend of mine. I had put a battery in it and spun the engine over about 6 months ago and it was free. Now that we have time to work on it the engine is locked up. The exhaust has been covered so rain hasn?t been pouring in or anything. So what?s the best way to get it freed up? I know this topic has been covered before so I appreciate you guys answering it again.
 
Start by taking the starter loss and see if it free up that way. If that is not it then pull the plugs out and do a wick test to make sure the cylinders are not full of water or gas or some other thing. If the cylinders are dry fill them with ATF and let ti sit a few days. Put the plugs back in to keep junk out. Also pour as much atf down the exhaust as it will hold so it get to the exhaust valves. Then after a week or so pull the plugs and try the starter again with short fast taps on the starter button and watch the fan for movement
 
Good possibility when you spun it over it scraped the oil from the sleeves and it dry stuck. Might be able to dump some solvent in cylinders, pull starter off and put a pry bar into flywheel teeth and start trying to work it back and forth. May not take much to get it to move.
 
I was thinking starter locked up when I saw you post Old. Maybe if they just took the starter loose and then put it back on it might be unstuck. gm
 
Pull the starter and bench test it , if it turned over 6 month ago
it not a internal problem .
do u have power at the starter
battery voltage Ok
 
Pull the spark plugs and put a little atf in each cylinder, then put it in high gear and try rocking it back and forth, watch and see if the fan turns
 
I pulled the starter and put a bar on the flywheel and I can?t budge it. I then wick tested the cylinders and thankfully they are dry. I pulled the valve cover and everything looked good. There is a little oil still on top of the head so I don?t think there any problem there. So I?m thinking the idea that when I spun the engine over a few months ago I scraped the oil off the cylinders is probably correct. I just filled the cylinders with ATF and put the plugs back in so I guess I?ll let it soak for a few days and try it again. I don?t think I?ll do any other work to it till I get it freed up.
 
I got a '39 John Deere B given to me a year ago. It had been stuck for around 25 years. On the advice of a friend, I filled it up with E-85. Darned if it didn't eat the rust, and now it turns over. Takes time, but it works.
 
After whatever magic liquid you pour in and let it soak a couple of days or longer. Now....do you have a compression tester with a hose and adapter that screws into the plug hole?? Pull the plugs and screw the hose in till you find the cylinder with the closed valves. Leave it screwed in the hole and on the other end of the hose screw on an airhose fitting. Plug in your air hose at 125 pounds of pressure and jump back. Enough times that air will pop your engine loose. Scares the berries out of ya.
 
I?ll have to see if I have anything to fit the thread. I?ve never tried to free an engine with compressed air before but I sure sounds like fun!
 
Is there any way to try to turn the engine backward? Perhaps some rust fell through an open valve and is now jamming a piston.

Above all, don't get too rough with it until you figure out the problem.
 
Did that with a tractor my dad was fixing many years ago. Also did it with the neighbors Alice Chalmers. They were poo pooing me like I was crazy until he plugged the hose in. Siiiis BBBBRRRRuuu.mmmp. spun the engine backwards and they almost needed to change their shorts. I was just standing there with a big S..... eating grin. If things are really stuck, then it is stuck. But if you have any luck it might just work !!!!
 
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