Hitachi IJ PH Service Manual page 128

b) Fill it up with the silicone sufficiently as shown below.
Silicone Filling Portion
(Hatching Portion)
Fill it up to approximately the same
height as the rib of the base plate so
that the screw head will not be out.
Fill up the downside of the terminal as well.
(B) Heat the filled part by a warm air of a drier (500W equivalent) for 7 to 8
minutes and cure the surface.
Caution: Keep the drier 50 to 100mm away so as not to deform the tube
by keeping it too close.
The metallic portion of the
high-voltage line terminal portion
should be completely hidden.
Rib of the base plate
D section
Rib
High-voltage round terminal
Drier
50 to 100 mm
Nozzle
5-8