Removed bearing cause crank gear had a lot a play. When I pressed bearing off to remove gear I found no journal or keyway in crank just a hole in crank with wat ever was sticking up to hold gear broken flush with crank. The gear does have a key way which has no damage. When I pressed bearings off what ever was broken fell to shop floor. It appears maybe a set screw or a pin protruded from crank. Anyone seen this? I figure I can remove wat ever is left in crank, but don't know what was there.