stuck motor

I know I'm on the wrong page for an orange tractor but you guys helped me with my 1946 Farmall A. I have been working on my newest project. A 1954 Allis-Chalmers WD45 all original paint, 3 original tires, decals are still visible. I had been parked in a barn since new and I purchased it from the original owners son. The motor is stuck but was running less than 7 years ago. I used a mechanics fiber optic scope to look in the cylinders when I got it and the front and rear cylinders still look almost shiny. The middle two cylinders have a very small line of light rust around the edge of the pistons. They don't look like they have had water standing in them since the top of the pistons look pretty clean like no rust has floated out onto them. I put kroil down the cylinders for the last month. I have tried pulling it around the field with dads tractor but it still hasn't broke loose. I tried rocking it back and forth every day for a couple weeks but still no luck. I put a mark on the crank pulley to see if it moved but it hasn't. I would rather not pull the head if I don't have to since its all original. Can a person use air pressure in the cylinders to break one loose. I know I would have to back off the rocker arms to close the valves. The man I bought the tractor from said his dad never worked the tractor hard. The steering wheel doesn't even have any back lash. Any ideas would be greatly appreciated

fill the cylinders with either automatic trans fluid, or kroil or pb blaster, what ever is your favorite. set the back wheels up on a short set of ramps, and put the tractor in road gear. let er sit. if its gonna break loose, in a couple weeks the tractor will have rolled down the ramps and be sitting on the ground. about a two or three foot ramp, high side maybe 8 to 10 inches off the ground. set a block in front of the front wheels a couple feet out so the tractor doesnt roll out the shed!!!

kinda tells you it has to come apart then and get it back to good mechanical condition. soaking does not get rid of rust. and rust makes pits in the cyls. rings cannot seat on pitted cyls. which will cause it to use oil when worked.rings can also be seized in piston grooves which will cause blow by. myself i would tear it down and go from there, instead of dragging it around and risking tearing out the clutch .

Do not pull the tractor,or your going to destroy something.It will take time,Does it have cast iron pistons in it if so it will loosen up.If it has aluminum good luck.Let it soak and install a good battery with short bumps to the starter.It took 7 years to lock up it will take time to brake loose.If the cylinders look like you said ill bet you it wont smoke

jimmy

I freed one up the other day with a pipe wrench with a 3ft piece of pipe.Been sitting several yrs.Had wrench on a crank stuck into the front of it. Hoss

Great Idea!! I would also twist the crankshaft from the other end with the starting crank, hang 100lbs on the crank so it also applies like minded rotation. block (tank type) heater would also add to the chances by heating and expanding the bores. Jim

Good idea, he should also check that it is the pistons that have it stuck, had a stuck crankshaft once.

Speaking of stuck things...
Had a 70 dodge with a 318, took the intake manifold bolts out - couldntt get the intake off. pulled hood attached overhead hoist to base gasket bolts - lifted car slightly - still didnt come loose - 2 days later the car was down and the intake was off.

Dad bought a Super M bout 7 years ago.

Stuck from sitting, he put in some diesel fuel in the cyls,

He then made a tool out of an old spark plug that hooked up to an air hose.

He pulled the rocker arms off and made sure the valves were closed.

Then he installed a regualtor on the air hose, hooked it up to the compressor and put about 100 psi of air pressure on that cyl for about an hour.

He did that to all 4 cyls on that SM,,

He hit the starter with a 1000 amp battery, while hooked to the air,,, it popped loose, he had it running by the end of that day.

He said the fuel was thin enough to push by the rings when the air was applied. It was also a 90 degree day too,,,,,,, When the diesel ended up in the oil pan,, it was time to move to the next cyl. Chad