How to Remove Piston from Cylinder

On Oct 1, 11:29*am, "Paul Dow (Remove Caps in mail address)"
wrote:

Does anyone have a technique to get the piston out? Preferably while
doing the least amount of damage. (So no explosives, please!)
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I don't see any easy-out for this one.

I assume you're willing to sacrifice the piston in order to salvage
the cylinder, in which case you might try soaking the piston with
liquid nitrogen or other cryogenic that should allow you to shatter
the piston along the ring-groove.

Depending on how much of the upper portion of the piston is obscured
by the wrist pin, you might consider fabricating a fixture of some
sort bearing a number of high-gauss rare-earth magnets, the idea being
to cause the ring to be drawn back into its groove whilst the assembly
is under tension.

In a similar vein, the suggestion about using the piston to remove the
cylinder liner would appear to have merit. You should be able to rig
the assembly so as to create considerable tension between the cylinder
and the piston. The manual should give you some idea as to the
required temperature difference, which would be obtained by raising
the whole assembly to a given temperature then hitting the piston AND
liner with liquid nitrogen.

-R.S.Hoover