Jabiru J450 Constructors Manual
Post-Paint>Fuselage>Fit panel mounted throttle
Tuesday, April 6, 2010
203 of 343
Fit the instrument panel retaining nuts
At this point tape the instrument panel back in place and
drill through the instrument panel mounting holes in the
panel with a 5/32” drill.
Remove the panel and fit captive nuts behind each hole –
use the captive nut as a jig (a complete captive nut
assembly is shown below right) as a jig (shown at right)
to drill the rivet holes– thread the screw part-way
through the captive nut from the back and fit the exposed
end of the thread into the hole, then drill the 2 x 3/32”
rivet holes for the countersunk rivets.
Countersink the rivet holes just enough to make a
countersunk 3/32” rivet sit flush and rivet the captive
nuts in place and then enlarge the 5/32” holes in the
panel to 3/16” to provide clearance for the screw threads.
Now the excess lip in the panel housing can be trimmed away around the captive nuts – mark
a line and trim generally as shown in the photo above.
Leave enough of a lip for the panel to sit against, about 10mm, and mark around the captive
nuts. Leave the solid section across the bottom of the panel – this will support the
Carb Heat
,
Choke
and
Cabin Heat
knobs later.
There may need to be some fine adjustment of the trimmed edge once the instrument panel
has been assembled in the next task, after which the panel housing can be covered with your
selected upholstery fabric.
This completes the
Post-Paint>Fuselage>Fit panel mounted throttle
task.