Tea-20 liner removal

• British Parts Northwest

I made a puller from a piece of 3" pipe to sit over the sleeve and threaded rod thru a piece of 3/16" steel plate on top the pipe, and on the bottom of the sleeve, with a nut on each end. The plate for the bottom can be oval cut, like one of the other posts, or cut round to about the same OD as the sleeve and slid in place past the crank. I don't have a way to machine a lip on the bottom plate to keep it centered in the sleeve, I cut a metal strip from steel plate and ground the edges to fit the I.D. of the sleeve and epoxied that strip onto the bottom plate give it a "lip" to keep the bottom plate in place. Tighten the nut, pull the sleeve right out. Worked like a charm. I saved my contraption for my "next" project tractor. If you try the pipe idea, make sure the pipe is cut square on the ends and sanded smooth so you don't damage the block.

Good luck!

Yes, I have used the chunk of hardwood and a hammer approach and it works well. The difficult part may be keeping everything clean. When the liners come out it it is necessary to clean very well the seat for the new gaskets. Also, there is much sludge and crud around the liners, and all that junk will be falling down on your crank. It really would be much better to remove the engine. How do I know? I got to tear my engine down _again_, right after rebuilding it, all because a chunk of dirt was trapped between a bearing and the crank. Lots of fun, splitting the tractor a second time to deal with that. I was so happy to get to practice rebuilding that motor another time...
Take note of the orientation of the liners; you can install them 90 degrees from their original position and get some more wear out of them.
I have a bit of information about this on my website.
Jim

• Website

You cannot withdraw the pistons downwards as the piston will foul on the crankshaft.

To add to what the others have said, you can also try using a commercial plumbing pipe freezing kit (fun if hired) to freeze the liners before trying to extract em or fit em back in.

Service tool FT 1 to remove the sleeves can be cheaply made from chunks of old RSJ and some high tensile steel bolts, a wrecking bar and some patience.

HTH.