Hyundai 73AZ6-03F00 Crankshaft Assembly

Starting with the center main and working out toward the ends, tighten the main bearing cap bolts without rotating the crankshaft. All cap bolts should be tightened equally.

Carefully lift the crankshaft straight out of the engine, ideally with the help of an assistant, as it is quite heavy. Be careful not to damage the reluctor ring for the crankshaft position sensor. With the bearing inserts in place in the engine block and main bearing caps, return the caps to their respective locations on the engine block and tighten the bolts finger tight.

Check the oil seal journals at each end of the crankshaft for wear and damage. If the seal has worn a groove in the journal, or if it's nicked or scratched, the new seal may leak when the engine is reassembled. An automotive machine shop may be able to repair the journal by pressing on a thin sleeve. If repair isn't feasible, a new or different crankshaft should be installed.