Boil the kettle and make a cup of tea!

Once you've done that, immerse a rag in the hot water left in the kettle. Wrap the hot rag around the piston and then try to remove the gudgeon (wrist) pin. The heat from the rag is often enough to expand the piston just enough to free the pin.

Failing that, use a puller. If a pin puller isn't available you can, in extreme circumstances, tap the pin out, but make sure the con-rod is very well supported so as not to put the big end bearing under undue load.

Tapping the pin out is definitely a 2-man job; one to support the con-rod/piston, one to do the tapping... tapping being the operative word!!
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Andy.
NSR-WORLD.COM

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