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The table below lists the defects you could have with the engine-indication system. For more data on
the system refer to the equipment manufacturer’s manual.
If you have the trouble detailed in the Trouble column read across to the Possible Cause column. Then
do the repair given in the Repair column.
Trouble Possible Cause Repair
No indication on the engine
indicators with the engine
operating or with the
ELECTRIC MASTER key
switch set to ON.
INST 1 Circuit-breaker not set. Make sure that the circuitbreaker
for the engine
instruments is set.
One of the indicators in an
integrated instrument does not
indicate correctly.
Sensor/Transducer defective. Do a test for continuity of the
cables for the relevant sensor.
If the cables are serviceable,
then refer to the engine
manufacturer.
Refer to Section 28-41 for the
fuel quantity indicating system.
Refer to Section 76-01 for the
engine sensors.
One instrument defective Replace the instrument.
AIRCRAFT
Engine Indicating DA 40 Series
AMM
Page 102
20 Sep 2007 77-41-00 Doc # 6.02.01
Rev. 5
Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Engine Indicating
Doc # 6.02.01
Rev. 5 77-41-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
These maintenance practices tell you how to replace an integrated-engine-instrument and a manifold
temperature sensor. Refer to the related Chapter for maintenance data on the sensors.
Where the engine control system provides data for the engine indicating system, only the engine
manufacturer or an TAE-approved maintenance shop can replace sensors.
2. Remove/Install an Engine Instrument
% A. Remove an Engine Instrument
Detail Steps/Work Items Key Items/References
WARNING: MAKE SURE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK
ON IT. IF THE ENGINE STARTS THE PROPELLER CAN CAUSE
INJURY OR DEATH.
(1) Make sure that the engine is safe:
S Set the ELECTRIC MASTER key switch to
OFF.
S Set the ENGINE MASTER switch to OFF.
S Set the power lever to IDLE.
(2) Remove the engine cowlings. Refer to Section 71-11.
(3) Disconnect the airplane main battery. Refer to Section 24-34.
(4) Remove the instrument panel cover. Refer to Section 25-10.
(5) Disconnect the electrical connector from the
instrument.
(6) Remove the 4 screws which attach the
instrument to the instrument panel.
From the front of the instrument panel.
Hold the instrument!
(7) Move the instrument towards the front of the
airplane and clear of the instrument panel, then
clear of the airplane.
AIRCRAFT
Engine Indicating DA 40 Series
AMM
Page 202
20 Sep 2007 77-41-00 Doc # 6.02.01
Rev. 5
B. Install an Engine Instrument
Detail Steps/Work Items Key Items/References
WARNING: MAKE SURE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK
ON IT. IF THE ENGINE STARTS THE PROPELLER CAN CAUSE
INJURY OR DEATH.
(1) Make sure that the engine is safe:
S Set the ELECTRIC MASTER key switch to
OFF.
S Set the ENGINE MASTER switch to OFF.
S Set the power lever to IDLE.
(2) Put the instrument in position in the instrument
panel
From the front of the airplane.
(3) Install the screws which attach the instrument to
the instrument panel.
(4) Connect the electrical connector to the
instrument.
(5) Install the instrument panel cover. Refer to Section 25-10.
(6) Connect the airplane main battery. Refer to Section 24-34.
(7) Install the engine cowlings. Refer to Section 71-11.
(8) Do an engine ground run-up. Refer to Section 71-01.
AIRCRAFT
DA 40 Series
AMM
Engine Indicating
Doc # 6.02.01
Rev. 5 77-41-00 Page 203
20 Sep 2007
3. Replace a Manifold Temperature Sensor
Detail Steps/Work Items Key Items/References
WARNING: MAKE SURE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK
ON IT. IF THE ENGINE STARTS THE PROPELLER CAN CAUSE
INJURY OR DEATH.
(1) Make sure that the engine is safe:
S Set the ELECTRIC MASTER key switch to
OFF.
S Set the ENGINE MASTER switch to OFF.
S Set the power lever to IDLE.
(2) Remove the engine cowlings. Refer to Section 71-11.
(3) Disconnect the electrical connector from the
manifold pressure sensor.
(4) Remove the old sensor from the intercooler outlet
pipe.
Turn the sensor counter-clockwise.
Discard the seal.
(5) Install the new sensor to the intercooler outlet
pipe.
Turn the sensor clockwise. Use a new
seal.
(6) Connect the electrical connector to the manifold
temperature sensor.
　
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