Ranger 2WD V6-245 4.0L VIN X SFI (1997)
Expansion/Freeze Plug: Service and Repair
Cup Type
REMOVAL
To remove a large core plug, drill a 12.70 mm (0.50 inch) hole in the center of the plug and remove with an Impact Slide Hammer T59L-100-B or
T50T-100-A or pry it out with a large drift punch. On a small core plug, drill a 6.35 mm (0.25 inch) hole in the center of the plug and pry it out with a
small pin punch . Clean and inspect the plug bore.
Prior to installing a core plug, the plug bore should be inspected for any damage that would interfere with the proper sealing of the plug. If the bore is
damaged, it will be necessary to true the surface by boring for the next specified oversize plug.
Oversize plugs are identified by the OS stamped in the flat located on the cup side of the plug.
Coat the plug and/or bore lightly with an oil-resistant (oil galley) Stud and Bearing Mount EOAZ-19554-BA or equivalent meeting Ford specification
WSK-M2G349-A1 or Threadlock 262 E2FZ-19554-B or equivalent meeting Ford specification WSK-M2G351-A6, and install it following the
procedure below:
INSTALLATION
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 a cup-type plug flares outward with the largest diameter of the outer (sealing) edge.
CAUTION: It is imperative to push the plug into the machined bore by using a properly designed tool. Under no circumstances is the plug to be
driven into the bore using a tool that contacts the flange. This method will damage the sealing edge and will result in leakage and/or plug blowout.
The flanged (trailing) edge must be below the chamfered edge of the bore to effectively seal the plugged bore.
