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(7) Install the alternate air assembly and the air filter. Refer to Section 71-60.
(8) Connect the mixture control cable:
S Put the bolt and spacer in position on the
mixture lever.
S Put the eye-end on the bolt.
S Install the washer and the self locking nut.
(9) Connect the throttle control cable:
S Put the bolt and washer in position on the
throttle lever.
S Put the eye-end on the bolt.
S Install the second washer and self locking
nut.
(10) Do a test of the mixture control for freedom of
movement and correct adjustment.
% Refer to Section 76-10.
AIRCRAFT
DA 40 Series
AMM
Engine Fuel and Control
Detail Steps/Work Items Key Items/References
Doc # 6.02.01
Rev. 5 73-00-00 Page 207
20 Sep 2007
(11) Do a test of the throttle control for freedom of
movement and adjustment.
Refer to Section 76-10.
(12) Connect the airplane battery. Refer to Section 24-31.
(13) Do a test for fuel leaks:
S Set the fuel selector/shut-off valve ON.
S Set the ALT/BAT switch to ON.
S Set the electrical fuel pump to ON.
S Make sure that there are no leaks from the
injector.
S Set the electrical fuel pump to OFF.
S Se the ALT/BAT switch to OFF.
S Set the fuel selector/shut-off valve to OFF.
(14) Connect the spark plug cables to the spark plugs. Torque to 12.4 to 13.6 Nm (110 - 120
in.lb).
(15) Install the engine cowlings. Refer to Section 71-10.
(16) Do an engine ground run-up test. Refer to the Airplane Flight Manual.
AIRCRAFT
Engine Fuel and Control DA 40 Series
AMM
Page 208
20 Sep 2007 73-00-00 Doc # 6.02.01
Rev. 5
Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Engine Fuel and Control
Doc # 6.02.01
Rev. 5 73-01-00 Page 1
20 Sep 2007
Section 73-01
Engine Fuel and Control - TAE 125 Diesel Engine
1. General
This Section tells you about the fuel system on the TAE 125 Diesel engine. It gives you general data
and the trouble-shooting data on the system. You cannot replace the components of the engine fuel
system. You can replace components in the air intake system and the fuel filter. Refer to the engine
manufacturer for data on the engine fuel system.
Refer to Section 28-01 for more data on the airplane fuel system. Refer to Section 71-61 for more data
on the air filter and alternate air valve. Refer to Section 76-01 for more data on the control system for
the engine fuel system. Refer to Chapter 81 for more data on the turbo-charger and intercooler.
AIRCRAFT
Engine Fuel and Control DA 40 Series
AMM
Page 2
20 Sep 2007 73-01-00 Doc # 6.02.01
Rev. 5
Common Rail
High Pressure Pump
Low Pressure Pump
Return to Tank Fuel Supply from Tank
Pressure Control/
Relief Valve
Injectors
Air Filter
Alternate Air Valve
Turbo-Charger
Intercooler
Manifold Pressure
Sensor
Manifold Temperature
Sensor
Inlet Fuel Filter
Inlet Manifold
Fuel Rail Pressure Sensor
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%
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%
%
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Figure 1: Engine Fuel System Schematic Diagram
AIRCRAFT
DA 40 Series
AMM
Engine Fuel and Control
Doc # 6.02.01
Rev. 5 73-01-00 Page 3
20 Sep 2007
2. Description and Operation
Figure 1 shows the schematic diagram for DA 40 with the TAE 125 Diesel engine. The engine fuel
system has two main parts:
) An air intake system. This system supplies air from the inlet to the air filter to the engine inlet
manifold.
) An engine fuel system. The engine fuel system takes fuel from the airplane fuel system and injects
it into the cylinders.
A. Air Intake System
The air intake system has an air filter located on the right of the engine compartment, just forward
of the firewall. The filter attaches to the bottom of an alternate air valve. The alternate air valve also
has an inlet direct from the engine compartment. A flap in the valve can select either filtered air or
warm, unfiltered air. Refer to Section 71-61 for more data on the air filter and alternate air valve.
The outlet from the alternate air valve connects to the turbo-charger. The outlet from the turbocharger
connects to an intercooler. The outlet from the intercooler connects to the engine inlet
manifold. Refer to Chapter 81 for more data on the turbo-charger and intercooler.
B. Engine Fuel System
(1) General
Fuel from the airplane fuel system goes into the engine fuel filter. The fuel filter is located on the
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