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OS FL 70 Piston Removal

Old 04-29-2015, 09:22 AM
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Ottdave
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Default OS FL 70 Piston Removal

I recently obtained an old FL 70 four stroke in a purchase of several planes. I would like to replace the bearings but am having trouble removing the piston and rod so I can take out the crank. I have removed the cylinder sleeve but can't determine how to remove the piston/rod from the bore. How do I do this?
Old 04-29-2015, 11:46 AM
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Ottdave
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Never mind. Got the piston out. There was so much corrosion/gunk on the wrist pin that the rod would not slide over far enough to remove it from the crankshaft. Penetrating oil and a lot of working the rod back and forth did the trick. After run oil people. Use it!
Old 04-30-2015, 05:59 AM
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Bax
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Glad you got it done. Many times, you need to heat the assembly to soften the hardened fuel residue.

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