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system. Refer to Chapter 73-00 for the bleed procedure.
Fuel
DA20-C1 AMM
Page 4
24 Mar 1999 28-20-00 Doc # DA201-C1
Rev. 1
Figure 2: Shut-Off Valve
DA20-C1 AMM
Fuel
Doc # DA201-C1
Rev. 0 28-20-00 Page 101
19 Dec 1997
TROUBLE-SHOOTING
1. General
Use the data below to trouble-shoot the fuel distribution system.
Complaint Possible Cause Remedy
Smell of fuel in the airplane. Fuel pipe connection loose.
Electrical fuel pump leaking.
Gascolator leaking.
Fuel shut-off valve leaking.
Tighten the connection.
Replace the fuel pump.
Repair or replace the
gascolator.
Replace the fuel shut-off
valve.
Low fuel pressure. Blocked filter (gascolator or
pump)
Defective engine-driven fuel
pump.
Clean the filters.
See the Teledyne Continental
Motors Maintenance Manual.
Difficulty starting the engine. Defective fuel pump. Replace the fuel pump.
Fuel
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Rev. 0
Intentionally left blank
DA20-C1 AMM
Fuel
Doc # DA201-C1
Rev. 9 28-20-00 Page 201
29 Apr 2004
MAINTENANCE PRACTICES
1. General
These maintenance practices tell you how to remove and install components. See Chapter 28-00
for the system description.
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.
2. Remove/Install the Electric Fuel Pump
A. Remove the Electric Fuel Pump
Detail Steps/Work Items Key Items
(1) Disconnect the battery. Refer to Chapter 24-31.
(2) Remove the fuel-tank access-panels from
the bottom of the fuselage.
(3) Disconnect the electrical connector for the
fuel pump.
(4) Close the maintenance shut-off valve. Cut the lock-wire.
(5) Open the maintenance Drain tap. Use a container to catch the fuel.
(6) Release the inlet pipe to the fuel pump. Put caps on the open connections.
(7) Release the outlet pipe from the fuel pump. Put caps on the open connections.
(8) Remove the 3 bolts which attach the fuel
pump to the B-bulkhead.
Hold the fuel pump!
The fuel pump has 3 attaching bolts.
(9) Remove the fuel pump from the airplane.
(10) Make sure that the maintenance Drain tap is
closed.
(11) Remove the fuel pump mounting bracket. Release 4 screws. (Only if the fuel pump
mounting bracket needs to be removed)
Fuel
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30 Apr 2008 28-20-00 Doc # DA201-C1
Rev. 13
B. Install the Electric Fuel Pump
Detail Steps/Work Items Key Items
(0) Install the fuel pump mounting bracket. Install 4 screws. (Only if the fuel pump
mounting bracket was removed)
(1) Put the fuel pump in position in the airplane.
(2) Install the 3 bolts which attach the pump to
the B-bulkhead.
Refer to Chapter 20 for torque value.
The fuel pump has 3 attaching bolts.
(3) Connect the outlet pipe from the fuel pump.
(4) Connect the inlet pipe to the fuel pump.
(5) Connect the electrical connector for the fuel
pump.
(6) Open the maintenance shut-off valve.
(7) Connect the battery. Refer to Chapter 24-31.
(8) Do a functional test of the electrical fuel
pump.
(9) Examine the fuel pump installation. Look especially for fuel leaks.
(10) Check the engine fuel-system set-up and
adjust as necessary after the installation of a
new electric fuel pump. A variation in boost
pressure between pumps can affect the fuel
system set-up.
Refer to the Teledyne Continental
Maintenance Manual for the engine fuelsystem
set-up.
CAUTION: LOCK THE MAINTENANCE SHUT-OFF VALVE OPEN WITH WIRE.
IF YOU DO NOT LOCK THE VALVE OPEN IT MAY CLOSE IN
FLIGHT. THIS WOULD CAUSE ENGINE FAILURE.
(11) Lock the maintenance valve open with wire. Lock the maintenance valve lever to the
gascolator.
(12) Install the fuel-tank access-panels below the
fuselage.
(13) Bleed the engine fuel system. Refer to Chapter 73-00.
Fuel
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29 Apr 2004 28-20-00 Doc # DA201-C1
Rev. 9
C. Clean the Filter Element in the Gascolator.
Detail Steps/Work Items Key Items
(1) Remove the fuel-tank access-panels from
the bottom of the fuselage.
(2) Close the maintenance shut-off valve. Cut the lock-wire.
(3) Remove the bowl from the gascolator. Cut the lock-wire.
Andair Type- Turn lock ring clockwise.
ACS Type- Turn knurled nut counter
　
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