Jun/Jul 2008

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Tips on Flywheel Removal

By Joe Morris

112 Irvin Road Powell, Tennessee 37849

Sometimes in restoring an engine it is necessary to remove the flywheel from the crankshaft to replace a bad gear or to free up and clean or replace a stuck or damaged governor collar. Here are some of the methods I've used.

First, before attempting to remove the key, take a file and file off any burrs on the crankshaft. Also, remove any burrs in the key slot all the way to the end. If the flywheel key is a tapered gib type key and has a good square end (i.e. the shoulder on the end has not been beaten off), heat the flywheel hub with a torch then take a 1-inch wide chisel and drive it in between the key and the flywheel face. A few good hard blows with a heavy hammer should, if all goes well, loosen the key. Since a gib key is tapered, it loosens all the way when it moves.

If the end of the key breaks off b...

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