Hi, Front main seal was leaking. No noise before. Replaced front main seal and installed a sleeve ...started engine....squeal ....stopped engine ruined crank pulley and cover. Replaced seal ,crank pulley with sleeve and cover. Started engine..squeal .Immediatly shut of engine .Pulled cover and crank pulley brass shavings but cover and crank pulley not hurt . I'm guessing no. 1 bearing . Can I replace without pulling the engine by loosning other bearings? Thanks, Mike