F 150 4WD V8-5.4L Flex Fuel (2008)
2.
Insert applicator into the porcelain and move applicator up and down 1/2" (13 mm) while turning to spread the Loctite® 638TM on the inside of
the porcelain. (Figure 18).
3.
Add additional Loctite(R) 638(TM), repeating Steps 1 and 2.
4.
Clean the applicator with Motorcraft(R) Metal Brake Parts Cleaner before the bonding agent starts to cure.
5.
Reassemble a dry and clean collet and pin assembly.
6.
Apply two 3/4" (19 mm) long stripes of Loctite(R) 638(TM) to the pin. Excessive amounts of Loctite® 638TMare being used if it drips off the
pin.
7.
Retract the collet and pin into the steel tool pilot to protect the Loctite(R) 638(TM) coated pin.
8.
Insert the completed assembly into spark plug well and fully engage the pin into the porcelain with a twisting motion to spread the bonding agent.
9.
Add additional Loctite® 638TM, repeating Steps 6-8.
10.
Leave the pin fully inserted in the porcelain while the adhesive cures. Replace the steel tool pilot with the aluminum alignment sleeve (G), Figure
9, to support the threaded rod while the adhesive cures if additional porcelain fragments are present in other cylinders. (Figure 19).
CAUTION
A MINIMUM 1 HOUR CURING TIME AT 70 °F (21 °C) DEGREES IS REQUIRED BEFORE EXTRACTION IS ATTEMPTED.
11.
Allow the Loctite(R) 638(TM) to cure for a minimum of one hour at 70 °F (21 °C).
12.
Repeat the bonding process for remaining cylinders as needed.
Porcelain Removal - Extraction
1.
After a minimum of one hour curing at 70 °F (21 °C), install the steel pilot tool over the threaded rod.
2.
Install the washer and jack nut until finger tight against the tool pilot bushing.
CAUTION
ONLY THE STEEL PILOT TOOL IS ACCEPTABLE FOR USE IN PORCELAIN REMOVAL.
3.
While holding the end of the threaded rod with a wrench, tighten the jack nut until the porcelain is free of the ground electrode.
4.
Refer to Mode 1 Procedure to remove the remaining ground electrode shield from the cylinder head.
