Are John Deere Motors Harder To Get Unstuck?

Tom Krotzman · Oct 28, 2009

There are a couple stuck John Deeres, an A and a B coming up on an auction. Are these motors harder to get "unstuck" because of their configuration?
Thanks, Tom

rustyfarmall · Oct 28, 2009

No different from any other engine.

PeterE · Oct 28, 2009

For a given engine size, the Deere will have more surface area to stick, since there are only two pistons. Then again, there are only half as many to worry about!

John T · Oct 28, 2009

If they are harder to "un stick" it may be due to the fact THEY HAVE HUGE PISTONS AND BIG BORES and a lot of mass and surface area for things to rust n sieze together....In cases where they arent stuck too bad one might fill n soak n drain the cylinders with a witches brew of auto tranny fluid and diesel and brake fluid and remove the rocker arm shaft to avoid bending pushrods from stuck valves and get her rocking back n forth a little at a time to free it BUTTTTTTTTTTTTTTTTT

If its stuck too bad the cylinders can be messed up and/or rings broken and siezed and to be fixed right she needs tore down. On the Deeres that means removing the rod caps and pulling the whole block out forward with pistons intact n then drive them out n fix any cylinder damage etc. its not any cheap or easy run

Good Luck with her

John T

Mike Aylward · Oct 28, 2009

Tom, to my estimation about the only thing that makes things a little more difficult on an old Deere engine is you can't soak the pistons and cover all of the top with a small amount of penetrant like you can in a vertically configured engine. However, if an engine is stuck you just as well remove the head anyway and take everything apart. That is the only real way to know if everything in there is ok. Mike

Wilson · Oct 28, 2009

I hung an old a on it's butt once to soak worked well

Wilson · Oct 28, 2009

I hung an old a on it's butt once to soak worked well

Mike (WA) · Oct 28, 2009

The good penetrants work by capilliary action, pretty much independent of gravity, so it shouldn't make much difference. But as someone said below, BIG pistons and bores, more area to sieze up- that's probably a bigger factor than horizontal vs. vertical.

Mitch D · Oct 28, 2009

hey tom any chance the tractors you mentioned are in New Lisbon? i was just there today and looked at a pair.

Tom Krotzman · Oct 28, 2009

Yes, those are the ones. How did they look?
Tom

Mike M · Oct 28, 2009

I've had better luck unsticking 2 cyls. then 4 + 6 cyls.
Less cylinders and cast iron pistons likely helped as does the fact that you can get a good grip on the flywheel and give it a twist. I have used many methods but the best so far seemed to be a come-a-long chained to the flywheel and looped around it to give a rotating motion.

But if they had alot of water and years to rust up it's going to have to come apart.

Wesley Stephens · Oct 28, 2009

There are so many variables when dealing with a stuck engine, it is hard to say. it depends on which valves are open, how much water got in the motor, how long it has had water in it, etc...

Mitch D · Oct 29, 2009

they are straight and fairly tight i'd say but they are definatly stuck and have spent time outside

Are John Deere Motors Harder To Get Unstuck?

Tom Krotzman

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rustyfarmall

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PeterE

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John T

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Mike Aylward

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Wilson

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Wilson

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Mike (WA)

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Mitch D

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Tom Krotzman

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Mike M

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Wesley Stephens

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