REMOVAL & INSTALLATION
See Figures 1 and 2
- Drain the cooling system.
- Drill or punch a 1 / 2 (12.70mm) hole in the center of the plug and pull it from the block with a Impact Slide Hammer T59L-100-B or T50T-100-A, or equivalent. The plug can also be pried out with a small pin punch.
- Clean and check the bore for roughness or burrs. If the bore is damaged, hone it and use an over-sized plug.
- Coat the new plug with sealer (Stud and Bearing Mount E0AZ-19554-BA or equivalent) and drive it into place depending on the particular type, as follows:
Expansion type core plugs are installed with the flange edge inward. The maximum diameter of this plug is located at the base of the flange with the flange flaring inward.
When installed, the trailing (maximum) diameter must be below the chamfered edge of the bore to effectively seal the plugged bore.
If the core plug replacing tool has a depth seating surface, do not seat the tool against a non-machined (casting) edge.Cup Type
Cup type core plugs are installed with the flanged edge outward. The maximum diameter of this plug is located at the outer edge of the flange. The flange on cup type plugs flare outward with the largest diameter of the outer (sealing) edge.
- The flanged (trailing) edge must be below the chamfered edge of the bore to effectively seal the plugged bore.