Aerostar 2WD V6-245 4.0L (1990)
Crankshaft Main Bearing Seal: Service and Repair
*** THIS ARTICLE REFLECTS CHANGES MADE BY TSB 9518 DATED JANUARY 16, 1995
REMOVAL
1. Remove the transmission.
2. Remove flywheel.
Rear Main Seal Removal
3. Use an awl to punch two holes in the crankshaft rear oil seal. Punch the holes on opposite sides of the crankshaft and just above the bearing
cap-to-cylinder block split line. Install a sheet metal screw in each hole. Use two large screwdrivers or small pry bars and pry against both screws
at the same time to remove the crankshaft rear oil seal. It may be necessary to place small blocks of wood against the cylinder block to provide a
fulcrum point for the pry bars. Use caution throughout this procedure to avoid scratching or otherwise damaging the crankshaft oil seal surface.
4. Clean the oil seal recess in the cylinder block and main bearing cap. Inspect and clean the oil seal contact surface on the crankshaft.
INSTALLATION
CAUTION: This installation procedure requires the use of hand tools only. The use of power tools or hammering on the installer can damage the
sleeve and seal.
Rear Main Seal Installation Tool
1. Attach the rear crankshaft adapter to the rear of the crankshaft using the supplied mounting screws.
