I used the
template furnished for drilling the holes in the instrument shelf for the
control module attachment and ventilation.
I made a small template out of card stock to help mark the location of
the template. After marking the lines I
measured them to make certain the forward edge of the control module is parallel
with the firewall. It worked. Initially all holes are drilled with a #30
bit. I
drilled the first corner hole and clecoed the template to the instrument
shelf. I then drilled the remaining
corner holes and installed clecoes.
I then drilled the circular hole pattern with a #30
bit. I removed the template and using a
step drill, I final drilled the holes to 5/16" diameter. This made the edges of the holes really close
to each other. Of course it was planned
to be this way. There is a real need for
cooling air to pass through the control module.
This should allow this to happen.
I then used the
F-00011 template to drill holes in the
upper firewall. I taped the template in
place and drilled the first hole. I
inserted a clecoe to hold the template more securely to the firewall and
drilled the remaining holes. I removed
the template and deburred the holes.
