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Farmall & IHC Tractors Discussion Forum
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Best way to chisel out a piston

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JohnG(TX)

04-18-2006 08:54:48




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I have an M that has one piston completely stuck. It is so bad that the top of the piston has rotted through. I have no hope of saving it or the sleeve. What is the best way to get it out? I am considering using a cold chisel from the top to try to knock out chunks of it, but I am concerned about the rings. I know the chisel will cut the aluminum easily up to the rings, but then what? I don't want to damage the rod or the block. Can I wedge the chisel between the sleeve and piston and cave it all into the cylinder, or will this cut through the sleeve and damage the block?

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El Toro

04-23-2006 18:15:17




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Use that kerosene the heat will free it. Hal



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ihc49er

04-20-2006 10:42:29




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Man that sleeve must realy be in there. it should have popped, did you try jacking on the rod with a 2/4 and when you have most of tractor weight on jack hit top of block with dead blow hammer, iam sure this will jar it out. you can also run 2 weld beads 180 degrees apart, on the inside of sleeve and that sleeve darn near pulls out by hand. but you have the piston in there so see what you can do and where the piston is sitting .

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ihc49er

04-19-2006 09:42:27




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Hi, JOHNG: wondering if you got it out yet? I see JT does the same thing i do. the sleeve is garbage so just push everything out . most times i keep the jack on the floor and jack on it,the sleeve will pop up before you lift the whole tractor wieght. then you can use your torch and heat the outside of sleeve and pound it out. there is NO hammering,soaking,heating,waiting,or talking french to it!This is about 30 min.job for me.

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JohnG(TX)

04-19-2006 09:48:48




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 Re: Best way to chisel out a piston in reply to ihc49er, 04-19-2006 09:42:27  
This is the method I used to get the sleeves/pistons out of my 1929 Regular. Worked well. I already tried this on this engine. I used the heaviest chain I have to go from one frame rail, to the jack, to the other frame rail. The jack lifted the whole front end, then bent over the iron bar I used to push against the piston. It did not budge.



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JT

04-19-2006 08:34:58




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
My M had a stuck piston also, I took a chain and made a sling across frame of tractor hanging down, put a 2 X 2 up in the piston, took a hydraulic jack, set it in the sling, then put the 2 X 2 on the jack and SLOWLY raised the jack, centering all in chains, This will push the piston and cylinder out at one time.



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JohnG(TX)

04-19-2006 08:47:32




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 Re: Best way to chisel out a piston in reply to JT, 04-19-2006 08:34:58  
I have tried that with an iron pipe, and it bent the pipe. This piston is really stuck. I also beat on the top with a wood block and had splinters everywhere. In short, I have tried all the 'usual' methods. I am considering using my torch and melting out the aluminum and letting it fall through to the ground.



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Marty Johns

04-18-2006 16:59:17




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Try a piece of LOCAST WOOD if it is available in your area, just as hard as iron!



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Dellbertt

04-18-2006 16:49:12




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Id spray the heck out of it with PB Blaster
and tap on it for a day as I walked by then use ih49er"s method.



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JAMES WILLIAMS

04-18-2006 12:01:13




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
drill 2 holes in the top of the piston,stick 2 peices of 1/2in fine threaded all theaaded down both sides of the pins and rods,put washers and nuts on them or what ever else works,make a bridge on top of your motor block with a heavy peise of angle with two holes in it to stick your all thread through and tighten with 2 nuts evenly,using this the same as a puller



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RustyFarmall

04-18-2006 13:44:16




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 Re: Best way to chisel out a piston in reply to JAMES WILLIAMS, 04-18-2006 12:01:13  
James, I tried that trick myself, eventually pulled the top of the piston apart. The rest of it was stuck just as tight as ever.



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El Toro

04-18-2006 11:58:56




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Pour some kerosene into that cylinder and then set it on fire. You need the heat to free the piston. Don't this near a building and have a good fire extinguisher handy. Hal



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JohnG(TX)

04-18-2006 12:07:19




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 Re: Best way to chisel out a piston in reply to El Toro, 04-18-2006 11:58:56  
I have used this method before, with good results, but this piston has a hole in it the size of a silver dollar. It just won't hold much kerosene for long.



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El Toro

04-18-2006 13:22:32




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 12:07:19  
Push some duct seal into the hole to plug it. It's known as dum dum too. Then use your kerosene. That heat will free it. Hal



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RustyFarmall

04-18-2006 10:28:08




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
John, I've been in your shoes. What some of these other guys are suggesting is probably the right way to do it, but if you don't have access to a large hydraulic press then their way won't work, and you can't place a block of wood on top of the piston and start pounding because you don't want the piston to go down. You already have holes in the top of the piston, so you somehow need to finish splitting the piston skirt. DO NOT USE a hammer and chisel to do this, you run the risk of breaking the actual cylinder wall, and if that happens you are looking at a machine shop repair. Your best option is to use a hacksaw blade, drop it down through the top of the piston, and begin working your way over to one side. It will take some time, but you should be able to fairly easily cut through the aluminum. You will not be able to cut through the rings, but once you have them exposed, you should be able to break them. Once that is accomplished, the stress should be off the piston, and you should be able to start wiggling it. PLEASE, do not drive anything down between the piston and sleeve. Don't ask how I know this.

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captaink

04-18-2006 11:15:43




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 Re: Best way to chisel out a piston in reply to RustyFarmall, 04-18-2006 10:28:08  
Hmmm. For some reason (don't ask why) I don't have to ask why! :>(



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ihc49er

04-18-2006 10:04:45




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
WHAT is all this Mickey Mouse stuff? Push out the rod,piston,& sleeve as 1 unit and then salvage your rod! its fast & easy.



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the tractor vet

04-18-2006 10:04:35




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Pull the engine and crank and with a good solid OAK block and good 12# sledge it will come or bleed or if ya got a good press it just may bring sleeve and all and that would be a good thing as far as the hammer and cheisl NOT.



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Wild Bill

04-18-2006 09:35:41




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
I use Logans method. It is really the safe way to do it. Wood on metal should not hurt anything, and if it does, you shouldn't be rebuilding that particular motor anyway.



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Nebraska Cowman

04-18-2006 09:42:14




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 Re: Best way to chisel out a piston in reply to Wild Bill, 04-18-2006 09:35:41  
I havn't used wood since I knocked the pistons out of a 47 Frazer when I was a teenager. And they weren't realy stuck. No, sorry, it takes iron to move iron and I've been in some bad ones.



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Wild Bill

04-18-2006 16:52:35




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 Re: Best way to chisel out a piston in reply to Nebraska Cowman, 04-18-2006 09:42:14  
Uh, ok?...



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Nebraska Cowman

04-18-2006 09:24:41




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
the cast rings should break easily. what you will have trouble cutting is the thin oil rings but by then it won't be a problem. Just don't go through the sleeve and damage the block.



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Logan

04-18-2006 08:57:43




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 Re: Best way to chisel out a piston in reply to JohnG(TX), 04-18-2006 08:54:48  
Cut a 4x4 down so it fits nice in on top of the piston and hit it with a sledge, i've done this to 3 tractors so far with the luck of breaking nothing.



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CLIFF S

04-18-2006 17:51:16




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 Re: Best way to chisel out a piston in reply to Logan, 04-18-2006 08:57:43  
Ive tryed most BUT what i done on my H was Heat it with a cutting torch around the out side where the rings are and then let it cool theh heat it some more,With the Expanshion and Contraction it was free in a short time!! Good luck its the only thing that worked for me!



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