JD 320 stuck engine

Hayfarmer

Well-known Member
A friend has a JD320 that has a stuck engine. It ran fine last fall but was outside this winter. I had a muffler with flap but must have gotten some water inside. I got a couple drops of water out of oil drain and oil level is not above full. I have pulled spark plugs and so far put quite a bit of ATF and some WD 40 in cylinders. I have rear wheel on one side off the ground and have tried rocking it. I tried a big wrench on axle nut but other side is o light it just turns backwards so I am not getting pressure on engine. Anything else I should put in cylinders?
 
There's no magic potion that's 100% guaranteed to free up cylinders. What you've got in there is as good as anything else.

However if there's any water in the cylinders it will never work. Oil products float on water. If you got drops of water out of the oil pan no doubt one or both cylinders had water on top.

Figure out how to get leverage. Anchor the wheel down however you need to. Figure out how to get on the engine crankshaft.
 
I tried the jacked up wheel on a stuck MT, after 6 months I took the valve cover off. The valves were free. I took the starter off and put a small crowbar on the flywheel. I was able to turn the crankshaft back and forth. I put the starter back on and put a 12 volt battery in with the spark plugs out it turned over. I then tried the jacked up wheel in high gear thing, I still couldn’t turn the engine with the wheel.
 
Once we had a old grain truck that was used during wheat harvest and when we were getting ready to fire it up for corn harvest it was stuck we drug it all around the county took the head off one cylinder was completely packed full of wheat the mice had packed it full so it just smashed all the wheat and locked up cleaned it up and ran just fine
 
A friend has a JD320 that has a stuck engine. It ran fine last fall but was outside this winter. I had a muffler with flap but must have gotten some water inside. I got a couple drops of water out of oil drain and oil level is not above full. I have pulled spark plugs and so far put quite a bit of ATF and some WD 40 in cylinders. I have rear wheel on one side off the ground and have tried rocking it. I tried a big wrench on axle nut but other side is o light it just turns backwards so I am not getting pressure on engine. Anything else I should put in cylinders?
Park in on a steep hill in gear and leave it. Gravity will eventually move it down the hill.
 
Soak the cylinders in evaporust. Take starter off and find bar to pry flywheel back and forth. If it does not give pull head and have a look.
 
Park in on a steep hill in gear and leave it. Gravity will eventually move it down the hill.
I hope this is a joke? Never understood the constant pressure theory. It does not even have any physics that could explain it. If this has actually worked for someone they must have drug it to the top of the hill when it was below 32 degrees and there was water in the crankcase high enough to freeze and lock the crank. Then when it thawed it came loose. If this actually worked for you under normal circumstances 99 that engine was not stuck very tight. No offense 99 I would love to hear your miracle tales.
In other words don’t waste your time.
I can list several other items that “could” influence the engine to break free a couple involve natural disasters like earthquakes or tornadoes. In both of those cases the engine would still require to be torn down to make it run again.
 
I once had one stuck from having one cylinder filled with mouse bait. I was in the process of rebuilding and I think that I got it cleaned out by adapting a vinyl tube onto my vacuum hose.
 
I hope this is a joke? Never understood the constant pressure theory. It does not even have any physics that could explain it. If this has actually worked for someone they must have drug it to the top of the hill when it was below 32 degrees and there was water in the crankcase high enough to freeze and lock the crank. Then when it thawed it came loose. If this actually worked for you under normal circumstances 99 that engine was not stuck very tight. No offense 99 I would love to hear your miracle tales.
In other words don’t waste your time.
I can list several other items that “could” influence the engine to break free a couple involve natural disasters like earthquakes or tornadoes. In both of those cases the engine would still require to be torn down to make it run again.
Not very neighborly to Super99.
 
Not very neighborly to Super99.
My apologies! I reread it after I typed it and thought it might be a little salty, but poked Post anyway. It was more about understanding the supposed “science” behind the constant pressure idea, not meant to single him out. Say you had a bolt torqued to 30 ft lbs. Then you got a bucket and hung it on the handle, then kept adding water to it until it clicked the wrench. From what I understand folks are saying by letting it set with the bucket on the handle that eventually the bolt torque is going to increase. I just don’t see that happening.
 
O-yes there is? not stuck for that long, so try automatic transmission fluid and acetone, 50x50 mix. But first take off the valve cover and make sure all valves are free. WD does nothing. Acetone is a great liquid solvent, it dissolves other substances, rust and varnish, ATF will lub. To try to move the crankshaft, bar the ring gear on the flywheel. Take off starter to get too? Do not be in a big hurry, let soak for a few weeks, keep refilling. Keep spark plugs in, the liquid will evaporate.
 
I'd just put a little muscle into it. Tow it in gear and pop the clutch a few times. It hasn't sat long enough that it won't break freeeeeeeeeeee....

Hopefully on asphalt if you have it accessible. Gotta have a little friction :D
 
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I agree on atf and acetone. Worked for me on a 500B case that sat for 15+ years but luckily only had i stck piston. It took about 2 weeks of soaking the one piston. I was rocking one rear wheel twice daily and was going to get a block of wood and big hammer but tried rocking one last time and it freed up.
 
I hope this is a joke? Never understood the constant pressure theory. It does not even have any physics that could explain it. If this has actually worked for someone they must have drug it to the top of the hill when it was below 32 degrees and there was water in the crankcase high enough to freeze and lock the crank. Then when it thawed it came loose. If this actually worked for you under normal circumstances 99 that engine was not stuck very tight. No offense 99 I would love to hear your miracle tales.
In other words don’t waste your time.
I can list several other items that “could” influence the engine to break free a couple involve natural disasters like earthquakes or tornadoes. In both of those cases the engine would still require to be torn down to make it run again.
I've never had to try it but was told that it works. Maybe you don't have a steep enough hill!
 
A friend has a JD320 that has a stuck engine. It ran fine last fall but was outside this winter. I had a muffler with flap but must have gotten some water inside. I got a couple drops of water out of oil drain and oil level is not above full. I have pulled spark plugs and so far put quite a bit of ATF and some WD 40 in cylinders. I have rear wheel on one side off the ground and have tried rocking it. I tried a big wrench on axle nut but other side is o light it just turns backwards so I am not getting pressure on engine. Anything else I should put in cylinders?
what is this piece of equipment you are referring to ? john deere 320 ???
 
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