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(1) Disconnect the battery. Refer to Chapter 24-31.
(2) Attach the battery cover temporarily.
(3) Disconnect any external electrical power
from the airplane.
(4) Defuel the airplane. Refer to Chapter 12-10.
(5) Remove the baggage compartment floor. Refer to Chapter 25-10.
(6) Disconnect the fuel return hose.
(7) Disconnect the fuel drain valve.
(8) Disconnect the fuel supply hoses.
(9) Release the rubber hose for the fuel filler:
− Release the hose-clamps.
− Pull the hose from the connection
sleeve.
(10) Release the steel band which holds the tank.
Fuel
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Figure 2: Remove/Install Fuel Tank
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Detail Steps/Work Items Key Items
(11) Disconnect the wires from the fuel quantity
sensor.
(12) Remove the tank from the airplane:
− Lift the back of the tank upwards and
forwards.
− Turn the tank upside-down as you
remove it over the seatback.
Refer to Fig: 2.
B. Install the Fuel Tank
Detail Steps/Work Items Key Items
(1) Make sure that the rubber pads are in
position on the spar bridge and the Bbulkhead.
(2) Put the tank in position in the airplane:
− Hold the tank upside-down with the
stepped edge facing aft.
− Move the tank above the seatback.
− Turn the tank so that the stepped edge
goes down behind the seatback.
− Keep turning the tank until it is the
correct way up.
Refer to Fig: 2
(3) Install the steel band which holds the tank:
− Tighten the nuts at each end equally.
− Pull upwards on the middle of the strap
with a spring balance.
Refer to Fig: 2
The movement of the strap must be
5 ± 1 mm at 5 kg load.
(0.15 - 0.23 in at 11 lb load).
(4) Connect the wires to the fuel quantity
sensor.
(5) Install the rubber hose for the fuel filler:
− Put the hose in position on the
connection sleeve
− Tighten the hose-clamps.
(6) Connect the pipe to the fuel drain valve.
(7) Connect the fuel return hose.
(8) Connect the fuel supply hoses.
Fuel
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Detail Steps/Work Items Key Items
(9) Refuel the airplane.
(10) Examine the fuel tank installation. Look specially for fuel leaks.
Note: If you find a leak from the tank (not from the connections), you must remove
the tank for repair. Obey the regulations of your airworthiness authority when
you repair fuel tanks.
(11) Install the baggage compartment floor.
(12) Remove the battery cover and connect the
battery.
Refer to Chapter 24-31.
(13) Bleed the engine fuel system. Refer to Chapter 73-00.
3. Flush The Fuel System Procedure
This procedure tells you how to flush the fuel feed pipe from the fuel tank to the engine bay.
Obey the usual safety precautions when you do work on the fuel system.
WARNING: DO NOT ALLOW HEAT OR FIRE NEAR FUEL. FUEL BURNS
VIOLENTLY. THIS CAN CAUSE INJURY TO PERSONS AND
DAMAGE TO EQUIPMENT
WARNING: DO NOT GET FUEL ON YOUR SKIN. FUEL CAN CAUSE SKIN
DISEASE.
Note: Make sure you use only clean fuel that meets the specification for
AVGAS 100 LL.
Detail Steps/Work Items Key Items
(1) Remove the engine cowlings. Refer to Chapter 71-10.
(2) Make sure the airplane has sufficient fuel to
do the test.
Approximately 4.5 Liters (1.2 US gal) of
fuel.
(3) Put a fire extinguisher in position next to the
airplane.
(4) Disconnect the fuel feed hose from the fuel
pump at the engine.
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Fuel
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Detail Steps/Work Items Key Items
(5) Put the end of the fuel feed hose into an
approved container.
Make sure the fuel feed hose and the
container are connected to approved
ground connections.
(6) Set the GEN/BAT switch to ON.
− Set the FUEL PUMP circuit breaker to
closed.
− Set the fuel pump switch to ON.
− Let the fuel pump operate for sufficient
time to pump approximately 4.5 liters
(1.2 US gal) into the approved container.
This will make sure that sufficient fuel has
been flushed through the system.
(7) Set the fuel pump switch to OFF.
(8) Attach the fuel feed hose to the fuel pump
inlet. Tighten the fuel hose connector.
Torque to 30.5 Nm (270 in lbs).
(9) Set the fuel pump switch to ON.
− Do a leak check of the fuel feed hose
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