 Above is a connecting rod undergoing resizing to specs on a Tobin-Arp machine.  Part of the inspection process involves checking crankshaft flange run-out.  Above is a crankshaft undergoing inspection for Lycoming Service Bulletin 505B to comply with Service Bulletin 530.  G&N balances the rotating mass parts to within 0 to 2 grams of the opposing parts.  Pistons are weighed as part of the balancing process. Pistons and other new parts are exchanged until balance is within 0 to 2 grams of the opposing parts. |