RANS S-20 RAVEN
TEXT MANUAL
02/17/2017
01K-01
FUEL SYSTEM - FUSELAGE
FUSELAGE PREPARATION
(BEFORE COVERING AND PAINTING OF FUSELAGE)
1.
Locate Header Tank Mount per
FIGURE 01K-01
. Transfer drill #30
through each tab. Glue Rubber Edging to top edge of Mount flanges. Rivet
Header Tank Mount to top of tabs.
HEADER TANK ASSEMBLY
Refer to OPTIONAL 6.9 GALLON HEADER TANK ASSEMBLY as required.
2.
Locate and drill fitting holes in Header Tank per
FIGURE 01K-02
. For
drilling the holes a 1/2" Unit-Bit
®
and 3/4" Unit-Bit
®
work best. Locate
center of each hole with a #30 drill bit, then drill full size. Deburr all holes.
Thoroughly clean tank several times by rinsing with water. After
confirming that all foreign material has been removed, let dry prior to
installing fittings.
NOTE: If it is anticipated that the plane will be converted
between Trike and Taildragger, then it is recommended to install sump
drains in both locations.
DOUBLE & TRIPLE CHECK HOLE LOCATIONS BEFORE DRILLING
.
3.
To install the fuel fittings into the tank, obtain a piece of wire. Safety wire
works well. Insert wire through one of the fitting holes in the tank and up
through the filler neck. Refer to
FIGURE 01K-03
. Install an O-Ring onto
the tank withdrawal fitting and slide this assembly over the wire extending
from the filler neck. Bend a loop in the end of the wire to keep the fitting
and O-Ring from falling off. Pull the fitting through the hole. Slide a flat
rubber washer, thick steel washer, and a retaining nut over the wire and
onto the fitting. Apply Loctite to threads and thread the nut on before
removing the wire.
CAUTION: Do NOT get Loctite on the rubber washer.
4.
Use an Allen wrench inserted into the tank fitting to hold the fitting while
tightening the retaining nut.
IMPORTANT: Do not allow the fitting or thick
washer to rotate while tightening or leaks may occur. HINT: Prevent the
thick washer from turning by holding with needle-nose Vise-Grips.
5.
Apply thread sealant to fittings and install into the tank fittings. Again,
allow no rotation of the tank fitting. Refer to the parts manual for the
correct parts.