Allis chalmers wont hand crank help

I recently got an Allis-Chalmers model B was told the motor was built 4 years ago ran two years ago but sat for 2 years I'm new to this type of tractor and I need some help is there any way to basically unlock the motor where the hand crank is the only numbers I see looks like b9610 buy the gear shifter if that helps at all

You can try putting it in 3rd gear and gently rocking the tractor by hand and seeing if the motor will break free. If that doesn't do it you can remove the spark plugs and fill the cylinders with ATF and other solvents and let it stand for a few days and see if you can rock the wheels and break it free. Otherwise you're going to have to remove the head and go from there.

Pull the spark plugs water came out one guessing that's a bad thing I still put some ATF in it is that a waste of time or should I go ahead and pull the top end

I pulled the valve cover and it actually looks pretty clean on the inside so I was kind of curious if I should go further and take the head off just thinking maybe the piston and rings are seized up do you have any solutions on how to get the ATF downside the spark plug holes sorry to sound like a new person this is my first tractor and trying to troubleshoot it here the spark plugs are side-mounted and I was spraying lubricant and it was just basically kinda coming back out

So what do you suggest should I take the head off and get down to the top of the piston

Eventually you may have to take the head off, but if you are gentle, in your efforts, a lightly stuck motor will eventually move.  Give the above methods a couple weeks, though...

I'm in with the pull the head off camp,with that much water in the cylinder for that long you'll need to check out everything including the valve stems to make sure they're not rusted bad.
A broken/dropped valve will definitely ruin your day.

A buddy used to have a B that was stuck. He was getting it running for a friend. He tried everything, and nothing would break it free. He pulled the head and saw it was #3 piston that was stuck. It put a wood block on top of it and whacked it real good with a sledge hammer. Broke free right away. He cleaned up some of the pitting in the sleeve, put it back together, and it runs like a sewing machine! Doesn't burn oil, no blowby, no smoke ever.

Edited by CrestonM - 12 May 2017 at 4:37pm

If you do pull the head before you try to turn anything put a bolt with a washer back in to hold the sleeve down otherwise you'll break the seal on the bottom of the sleeve If It Moves at all it may just push the sleeve up instead of pushing the Piston up

Trying to upload pictures but all the picture sizes are too big anyone have no way to resize them smaller besides crop

You can resize the pictures when uploading them. Set the width to 640 and the height to 480 in that command window for uploading.

Gerald J.

Does anyone know how the parts work like gasket kits do all model B have the same gaskets

So finally got the motor unseized now I have it all reassembled won't start put new plugs in it obviously new oil oil filter didn't do the wires are Magneto how do I check for the spark does have plenty of gas coming to carburetor

A trick I have used is to pull the valve cover off. Remove the rocker arms and pull the head. Look for the stuck piston. If it is not at bottom dead center or close to it then I pour this cylinder full of hydraulic oil. Next, I put the head back on. I made a fitting that threads into the spark plug hole and screw my Porta-Power hose to the other end. I then use my hand operated Porta Power to apply pressure to the cylinder. I have broken loose some seriously stuck engines using this trick. By doing this you apply even force across the piston face and do not place undue force on the connecting rods. If the piston of concern is at BDC then I swing the engine on a stand, remove the crank, and drive the piston on out with a block of wood. Never have I found a seriously stuck engine with water in it that did not have putts in the liner. If they won't gone out, I replace the liner and piston assembly on the affected cylinder at a minimum. Most of the time, I'll overhaul the engine if I am at this point.