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Piston liner stuck

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Old 08-03-2004, 05:39 PM
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JRG1
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Default Piston liner stuck

I have an OS40FSR that I am cleaning up. In process, the piston came out of the sleeve and I can not remove the sleeve from the crank case. It is absolutely stuck in place and there is no apparent way to get hold of to remove it. I cleaned the case with sleeve/piston in place in anti freeze. That is when the piston came out- by mistake. The piston is ringed and it is next to impossible to reinsert it into the sleeve from the top. The sleeve must be removed to insert the piston from the bottom of the sleeve.
Question is: How do I get the stuck sleeve out from the engine case?
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Old 08-03-2004, 06:12 PM
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JIMBO D
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Default RE: Piston liner stuck

Try warming the case up & then pushing the liner up with a piece of dowel through the backplate hole.Warm either in the oven for a few minutes or even under a hot tap( as long as you clean ALL moisture out after)
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Old 08-03-2004, 06:13 PM
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Kimhoff
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Default RE: Piston liner stuck

Toss the engine in a 400 degree oven for about 30 minutes. Using a hot glove to hold the engine reach in through the back with a wooden dowl and push the sleeve out.
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Old 08-03-2004, 09:12 PM
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PhilTM
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Default RE: Piston liner stuck

I just had the same experience pulling the sleeve on an engine, and as others have suggested, heat is your friend.
Also, if it's really being stubborn, after tapping it out a bit with a wood or nylon punch from the inside, if you can get the liner's lip started up from the top of the cylinder, you can "carefully", use 2 small screwdrivers on opposite ends to gently pry it up. This really helped me. The main thing to remember is to not gouge grooves in anything by being too aggressive, and remember not to use any metal punches to tap the liner out.

Phil
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Old 08-04-2004, 07:02 PM
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buchtes
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Default RE: Piston liner stuck

warm up the block, sleeve and all to 300F or so, hold it with a thick glove, and place a icecube down the bore ( inside the sleeve). It should come out easy once the sleeve has cooled with the ice.
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