RANS S-20 RAVEN
TEXT MANUAL
09/01/2013
06-01
BOOT COWL ASSEMBLY
ASSEMBLY
(BEFORE COVERING AND PAINTING)
1.
Refer to the parts catalog and select the required components for
assembly.
2.
Apply masking tape to the bottom of the wing strut carry-thru (Station 2)
and mark the bottom centerline of the tube. This will become your
reference line for trimming the aft bottom edge of the boot cowl skin.
3.
Rivet the 3 pieces of firewall together per parts manual. Pin the firewall to
Station 1 with two 1/4" bolts. Transfer drill #30 through all tabs. Use a
wood block on the firewall side for support when drilling. Cleco as you drill.
Remove, deburr, and apply Truck Bed Liner Spray to backside of the
firewall.
4.
Cleco the firewall back in place. bend the small tabs into alignment with
the boot cowl side skins during assembly.
5.
Position Bottom Boot Cowl Skin with the bent flange against the forward
side of the firewall. Center side-to-side with the opening near the front
centered on the Nose Gear Collar.
NOTE: Opening may need to be
modified for Nose Gear installation.
6.
When satisfied with fit transfer drill #30 through welded tabs on the
fuselage. Use a wood block on the Bottom for support when drilling. Cleco
as you drill.
7.
Slip the Skin Stiffeners (aluminum angles) between the tabs and bottom
boot cowling skin. Refer to
FIGURE 06-07
for positioning. Place the 3/4”
flange of the Stiffeners against the skin. Do this by removing one cleco,
transfer drill through the aft tab, replace the cleco, swing forward end of
Stiffener into place after removing the other clecos. Transfer drill through
all tabs. The Stiffeners are provided a little long. Trim as needed.
8.
Locate and drill #30 holes approximately every 2” between the tabs. Cleco
from the bottom, so they are not in the way of the floorboard.
NOTE: The
short flange of the stiffeners will need trimmed to clear brake/rudder pedal
mounting tabs. Trim as required.
See
FIGURE 06-08
.
9.
With the Stiffeners clecoed in place, lay the floorboard in the fuselage.
Align mounting holes and mark the Floorboard flange where it intersects
the skin stiffeners. Remove material from flange to prevent contact with
Stiffeners. Remove floorboard.
