Engine - Cylinder Head Bolt Threads Damaged - TSB SB0004-11
C. Apply a small amount of Loctite® to the outer threads of the insert.
D. Insert the insert driver with the insert into the bolt hole and slowly screw it into the hole until the marking on the driver matches the top surface
of the drill bushing.
E. When the marking is aligned with the top surface of the bushing turn the driver in the opposite direction to remove it.
F. Remove the drill bushing and screw the head bolt into the hole by hand to verify that there is no problem with the threads.
HINT
Apply a small amount of engine oil to the threads of the head bolt.