Core Plug Replacement: Material

WARNING: This page is about a different car, the 2009 Ford RV Cutaway, 2009 Ford Econoline, 2009 Ford E450 Super Duty, and 2009 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

MATERIAL SPECIFICATION

Item	Specification
High Temperature Retaining Compound Loctite® 620(tm)/Permatex® 62050, or equivalent; obtain locally	WSK-M2G349-A9
Threadlock 262 TA-26	WSK-M2G351-A6

NOTE: It is necessary to use Loctite® Retaining Compound 620 High Temperature sealant on all 3 valve modular engine cylinder head cup plugs. If not used, the cylinder head cup plugs could leak or seep, causing serious engine damage.

All core plugs

NOTE: Cylinder block core plug shown, cylinder head core plug similar.

Fig 1: Removing Core Plug

Courtesy of FORD MOTOR CO.

Use the Slide Hammer or a suitable tool to remove the core plug.

NOTE: Oversize plugs are identified by the OS stamped in the flat located on the cup side of the plug.

Inspect the core plug bore for any damage that would interfere with the correct sealing of the plug. If the core plug bore is damaged, bore for the next oversize plug.
Cup-type

NOTE: Use care during this procedure so as not to disturb or distort the cup sealing surface.

NOTE: When installed, the flanged edge must be below the chamfered edge of the bore to effectively seal the bore.

Fig 2: Identifying Sealant Applying Area To Cup-Type Core Plug Surface

Courtesy of FORD MOTOR CO.

Coat the cup-type core plug and bore lightly with sealant and install the core plug.
- Use a suitable tool to seat the cup-type core plug.
Expansion-type
NOTE: Do not contact the crown when installing an expansion-type core plug. This could expand the plug before seating and result in leakage.

Coat the expansion-type core plug and bore lightly with sealant and install the core plug.

Use a suitable tool to seat the expansion-type core plug.

Fig 3: Identifying Sealant Applying Area To Expansion-Type Core Plug

Courtesy of FORD MOTOR CO.