stuck 520

[green fever ms]

im trying 2 break down a 520lp that is froze up, any suggestions on how 2 free it up and save the pistons?

 

[Roses Rex]

Weld a tube to go in your spark plug hole with threads then remove your spark plug put the tube in the hole then pour Marvels Marical Oil in the tube let it sit at least a month or longer if you can, then chain it to another tractor put it in high gear and engage the cultch and pull upand down the road after doing that a couple time turn the 520 around and pull it backwards in reverse with the clutch engaged .
Note: It may not work the first time it may take a few times I had a 630 jd that froze up and it took about a year and a half to finally work. But as the sahying goes If you dont succed at first try,try again

 

[Ben.So.Tex.]

Pull it if you want too, But you may bend a rod and then the troubles really starts.
Read some of the archives on stuck engines and you may find it very helpful.
Good Luck

 

[Jerry Pevehouse]

If you're going to restore the tractor anyway, pull the block, and if need be, take it to a machine shop and have them pressed out. Save you alot of trouble, and it'll be already in the shop if it needs honeing or bored and sleeved. That is, if it's stuck too bad to break it loose.

 

[730d se]

I would not suggest pulling it as you do not know how stuck it is. You can break more than you can fix pulling a tractor with a stuck engine.

 

[M w J]

I had a 50 that was stuck and if we pulled it it would slide the tires. We did not get rough with it cause we didn"t want to break something . We had kroil in the cylinders for a couple of wheeks. I bolted a 4 ft. bar to the flywheel and rocked the flywheel back and forth and in 5 minutes had it turning a whole turn. Then I put new plugs in it and new gas and in an hour had it running It had been stuck 2 years.

 

[buickanddeere]

At the very least the rings are ruined and the bores need rust honed off.
The head and cylinder block has to be removed to press the pistons out without wrecking something. Use a hydraulic press,a block of wood and a sledge do not save time or money.
Pulling stuck engine will also break valve train components if the valves are seized.
A tractor this old and this stuck needs the crank looked at as well.
Are you familiar with two cylinder flywheels?