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(2) Remove the engine top-cowling. Refer to Section 71-10.
(3) Disconnect the airplane battery. Refer to Section 24-31.
(4) Disconnect the electrical cables from the
temperature probe.
Refer to Figure 4.
At the in-line connector.
(5) Replace the CHT probe:
S Unscrew the probe from the cylinder head.
S Move the probe clear of the airplane.
S Install the new probe.
(6) Connect the electrical cables to the probe. At the in-line connector.
(7) Connect the airplane battery. Refer to Section 24-31.
(8) Install the engine cowlings. Refer to Section 71-10.
AIRCRAFT
DA 40 Series
AMM
Engine Indicating
Detail Steps/Work Items Key Items/References
Doc # 6.02.01
Rev. 5 77-40-00 Page 207
20 Sep 2007
(9) Do a test of the CHT indicating system:
S Monitor the CHT indicator.
S Set the ALT/BAT Switch to ON.
S Do a ground run-up of the engine.
The indicator must show zero.
The indicator must show the ambient
temperature of the cylinder head.
Refer to the DA 40 Airplane Flight
Manual. The CHT indicator must show
the relevant temperature.
D. Replace an Exhaust Gas Temperature (EGT) Probe
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 The ignition switch is set to OFF.
S Set the ALT/BAT switch to OFF.
S The throttle is set to IDLE.
S The mixture control is set to LEAN CUT-OFF.
(2) Remove the engine cowlings. Refer to Section 71-10.
(3) Disconnect the airplane battery. Refer to Section 24-31.
(4) Disconnect the electrical cables from the EGT
probe.
Refer to Figure 5.
At the in-line connector.
(5) Replace the EGT probe:
S Release the worm drive clamp which holds
the EGT probe in position.
S Replace the EGT probe.
S Install the worm drive clamp which holds the
EGT probe.
AIRCRAFT
Engine Indicating DA 40 Series
AMM
Detail Steps/Work Items Key Items/References
Page 208
20 Sep 2007 77-40-00 Doc # 6.02.01
Rev. 5
(6) Connect the electrical cables to the EGT probe. At the in-line connector.
(7) Connect the airplane battery. Refer to Section 24-31.
(8) Install the engine cowlings. Refer to Section 71-10.
(9) Do a test of the EGT indicating system:
S Monitor the EGT indicator.
S Set the ALT/BAT Switch to ON.
S Do an engine ground run-up.
The indicator must show zero.
The indicator must show the ambient
temperature of the cylinder head.
Refer to the DA 40 Airplane Flight
Manual. The EGT indicator must show
the relevant temperature.
E. Replace the Oil Pressure Transducer
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 The ignition switch is set to OFF.
S Set the ALT/BAT switch to OFF.
S The throttle is set to IDLE.
S The mixture control is set to LEAN CUT-OFF.
(2) Remove the engine top-cowling. Refer to Section 71-10.
(3) Disconnect the airplane battery. Refer to Section 24-31.
(4) Disconnect the cables from the transducer:
S Pull back the protective boots from the cable
eye-ends.
S Remove the 2 nuts and washers which attach
the eye-ends to the connectors.
S Remove the eye-ends from the connectors.
Refer to Figure 6.
AIRCRAFT
DA 40 Series
AMM
Engine Indicating
Detail Steps/Work Items Key Items/References
Doc # 6.02.01
Rev. 5 77-40-00 Page 209
20 Sep 2007
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
(5) Replace the transducer:
S Remove the defective transducer from the
mount and discard the O-ring seal.
S Install a new O-ring seal on the new
transducer.
S Install the new transducer.
Use a suitable container to collect the
spilt oil. Put caps on all open
connections.
(6) Connect the electrical cables to the transducer:
S Install the electrical cable eye-ends onto the
transducer connectors.
S Install the 2 washers and nuts which attach
the eye-ends.
S Move the rubber protective boots back into
position over the eye-ends.
Refer to Chapter 92 for the Wiring
Diagrams.
(7) Connect the airplane battery. Refer to Section 24-31.
(8) Install the engine cowlings. Refer to Section 71-10.
(9) Do a test of the engine oil pressure indicating
system:
S Monitor the oil pressure indicator.
　
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