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Engine froze up.

B

bigd1

New User
I was not able to turn my 1951 Farmall Super C over with the hand crank. Pulled the head of and found I had rust in my number three cylinder. All other cylinders are clean and look real good. Tractor has sat for a number of years. Hoping that the rust was caused by a bad head gasket. Had about one half pint of anti-freeze in the oil pan. Other than a lot of prayer, what can I put in that cylinder to break free the rust. Any ideas will help. I've read a lot of them at different sites....looking for first hand knowledge. I'm prepared to change sleeve and piston if need be. The clutch is not froze up, so I'm looking at the cylinder to be the problem. Thanks....bigd1
 
ATF is a popular and effective treatment. With just one cyl affected it"s easy to remove that one piston and renew.
 
after it is soaked, get a round piece of hardwood the size as cyl. and give it a wack with a sledge. that will break it free. just the oil wont do too much with out help.
 
Soak it with whatever concocktion you think would be the best. I agree that a wack with a sledge using a wood block will probly be what it takes to actually break it free. Once free I would take that piston clear out. Inspect it and the sleeve for damage. If no pits etc., you could clean it up and hone the sleeve wall and put it back together hopefully not having to buy a sleeve or piston. If the sleeve is pitted bad, could be a different story. You'll know by looking at it.
 
If its got rust just remove the sleeve and piston together cause if its rusty it is shot. It wont be easy unless the engine is on a stand i have had in the past some froze so bad i had to remove crank then make a u-shaped piece so we could press sleeve and piston together out in a press.
 
You can pour ATF on top of the piston and let it soak. Remove the oil pan, unbolt the connecting rod and use a piece of 2x 2 oak and a big hammer to see if you can drive out the piston. The sleeve is a wet sleeve and has a seal near the bottom to prevent leakage. You can use an acetylene torch to heat the old sleeve and free the stuck piston. If that sleeve is pitted I would install a new sleeve and new seal. The same for the old piston. Hal
 
How much rust? If you can scrape it to bare metal with your jackknife it will clean right up with a little scouring. But if it's pitted and scaly you will need a new sleeve.
 
Is it possible the head gasket leaked into the cylinder then made it past the rings to the pan?

That may explain the rust in just one cylinder.

Look closely at head, head gasket and block around where #3 for any signs of pitting or where coolant could have leaked.
 
Super C is a wet sleeve engine. Could be the lower o-rings that seal the sleeve to the block failed, but that would not explain the rust in one cylinder.

They could be two separate unrelated problems. Unless the cylinder clearly had coolant in it, there is no reason to think that the rusted cylinder and the coolant in the oil are at all related.

There are about 1000 different concoctions you can pour into a cylinder to free it up and they all work or don't work depending on who you ask.

When you do go to wack the piston, try to drive it down away from the rust.
 
So why not after you get the piston to go down a
little, use a cylinder hone to remove some of the
rust?
 
I've used Naval Jelly to dissolve the rust, then used 50/50 Acetone/ATF to free the rings & piston. Removed the oil pan, removed the rod cap on the bad cyl. and removed the piston. Smoothed out the cylinder with a Cylinder Hone; cleaned up the piston and removed the old rings. Checked the condition of the bearings & if OK, re-installed the piston with a new set of rings.

This was on the engine in a pickup, and I had everything to do the job (including new head gasket) except the new rings.

HTH

Doc :>)
 
On my 420 JD (upright cylinders) I drilled a piece of square tube to fit the head bolts on each side of the stuck piston. I put some steel blocks under the tube on the piston and tightened the bolts until it went down. Cleaned the rust and used the other piston to push it back up. Used Kroil also.
 
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