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firewall.
(2) Install the 4 bolts which attach the engine mount
to the corners of the firewall:
S Push the bolts through the firewall and
mounting pads.
S Install the washers and self-locking nuts on
the bolts.
Do not install the center mounting bolt.
Use new bolts.
Use new fire resistant self-locking nuts.
Torque: 40 Nm (29.5 ft.lb).
(3) Attach the elastomer pack for the nose landing
gear leg to the engine mount:
S Move the eye end into position (in line with
the center mounting pad for the engine
mount).
S Push the center mounting bolt through the
firewall, the mounting pad, and the eye end.
S Install the washer and self-locking nut on the
bolt.
Use a new bolt.
Use a new fire resistant self-locking nut.
Torque: 60 Nm (44.3 ft.lb).
(4) Install the air filter housing:
S Move the filter housing into position on the
engine mount.
S Install the bolts, nuts and washers holding the
filter housing to the engine mount.
S Install the bolts, nuts and washers holding the
alternate air valve to the filter housing.
S Move the air filter into position at the alternate
air valve.
S Tighten worm-drive clamp on the air filter.
AIRCRAFT
Power Plant DA 40 Series
AMM
Detail Steps/Work Items Key Items/References
Page 204
20 Sep 2007 71-21-00 Doc # 6.02.01
Rev. 5
(5) Install the oil separator:
S Move the oil separator into position on the
engine mount.
S Install the bolts, nuts and washers holding the
oil separator to the engine mount.
Together with the oil hoses.
(6) Install the instrument panel cover.
(7) Install the fuel filter housing:
S Move the filter housing into position on the
engine mount.
S Install the worm-drive clamps on the fuel filter
housing.
S Connect the fuel lines on the rear side of the
fuel filter housing.
Make sure that the feed line is connected
to the 'tank' port on the filter housing.
(8) Install the oil radiator:
S Move the oil radiator into position on the
engine mount.
S Install the bolts, nuts and washers holding the
oil radiator to the engine mount.
S Connect the oil hoses at the oil radiator.
(9) Install the engine. Refer to Section 71-01.
AIRCRAFT
DA 40 Series
AMM
Power Plant
Doc # 6.02.01
Rev. 5 71-50-00 Page 1
20 Sep 2007
Section 71-50
Electrical Cables in the Engine Compartment - Lycoming Engine
1. General
The engine compartment has a main electrical wiring harness. The harness has all of the low -power
cables. There are no special maintenance practices for these cables. See Chapter 24 for data about
the battery and alternator wiring. See Chapter 80 for more data about the starter cables. See Chapter
92 wiring diagrams for data about the cables in each system.
2. Description
Figure 1 shows the electrical cables in the rear of the engine compartment. Figure 2 shows the electrical
cables on the left side of the engine and Figure 3 shows the electrical cables on the right side of the
engine.
The main electrical harness comes through the firewall on the right side. P-clamps attach the main
harness to the tubes of the engine mount. These electrical cables split from the harness at the rear of
the engine:
) No. 2 and No. 4 cylinder CHT probe cables.
) No. 2 and No. 4 cylinder EGT probe cables.
) Power cables for the SlickSTART booster control unit or LASAR control unit.
) Cables for the voltage regulator.
) Manifold pressure sensor cable.
) Oil Temperature sensor cable.
The main harness goes forward and down the right side of the engine. P-clamps attach the harness to
brackets mounted on the engine sump bolts. These electrical cables split from the harness at the side
of the engine:
) No. 1 and No. 3 cylinder CHT probe cables.
) No. 1 and No. 3 cylinder EGT probe cables.
) Oil pressure sensor cables (2 cables).
) Fuel pressure and fuel flow sensor cables (3 cables).
AIRCRAFT
Power Plant DA 40 Series
AMM
Page 2
20 Sep 2007 71-50-00 Doc # 6.02.01
Rev. 5
Oil Temperature
Sensor Connector
Oil Pressure
Sensor Connector
Figure 1: Electrical Cables at the Rear of the Engine Compartment
AIRCRAFT
DA 40 Series
AMM
Power Plant
Doc # 6.02.01
Rev. 5 71-50-00 Page 3
20 Sep 2007
The main harness passes under and across the engine to these items:
) Alternator.
) Starter.
AIRCRAFT
Power Plant DA 40 Series
AMM
Page 4
20 Sep 2007 71-50-00 Doc # 6.02.01
Rev. 5
LYCOMING LYCOMING
Starter
　
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