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INSTALL TANK PICK-UP
After checking for baffles and fuel gauge linkage, pick a spot on fuel tank for the fuel
pick-up tubes (usually top center of tank on end closest to the APU). Apply heavy grease
to spot where hole is to be drilled. The grease will help keep metal shavings out of fuel
tank. Drill a ¼” pilot hole. You may want to use several different drill bit sizes to get up
to the ¾” bit required for the fuel pick-up tube. Once you have a ¾” hole, clean all metal
shavings from the hole. Reapply heavy grease and using the ½” NPT tap the threads for
the fuel pick-up tube. Clean area very thoroughly.
Determine the length needed for the pick-up tube. The recommended length for the
pick-up tube is 3” shorter than the depth of the fuel tank. Cut pick-up tube to length
needed. Apply thread sealant to the threads of the pick-up tube and screw into fuel tank.
Be sure that pick-up tube connections are suitably positioned to allow connecting the fuel
hoses and clamps.
ROUTING AND CONNECTING THE FUEL LINES
Care must be taken when routing the fuel lines. You must route lines so they can
be strapped securely and in a way that they will not come into contact with anything hot,
or any moving components. Suggested routing of fuel lines is as follows: Lines coming
out of the APU, run up into the inside of frame rails. Strap lines either to the backside of
the unit, or at first bend in the frame rail. Run along the inside of the frame rail until you
reach the fuel tank and the fuel pick-up tubes. Be sure that you have no kinks in the line
and that the line is run away from anything abrasive. Strap fuel lines securely with tie
straps or clamps.
Once fuel line is secure, cut the fuel lines to desired length with a hose cutter or
utility knife. Trim the hose loom back approximately 1 ½”. There are 2 different size
hoses. The 5/16 hose is for fuel supply and the 3/16 hose is for fuel return. Place 2 - #4
hose clamps (provided) on the end of the 5/16-fuel line and slip onto the larger of the two
tubes on the fuel pick-up tube. Tighten both clamps on the 5/16-fuel line. Once the
supply line is secure, do the same with the 3/16 return line. Make sure all 4 clamps are
secure.
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