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WARNING: DO NOT GET ACETONE ON YOUR SKIN. ACETONE CAN CAUSE
SKIN DISEASE.
WARNING: DO NOT BREATHE ACETONE FUMES. ACETONE FUMES CAN
CAUSE ILLNESS.
CAUTION: REMOVE ACETONE AS SOON AS POSSIBLE FROM GFRP.
ACETONE CAN CAUSE THE RESIN TO SOFTEN AND FAIL.
(3) Clean the area for painting. Use acetone.
(4) Paint the inside of the cowling with fire protection
paint.
Obey the paint manufacturer’s
instructions.
AIRCRAFT
DA 40 Series
AMM
Power Plant
Doc # 6.02.01
Rev. 5 71-11-00 Page 1
20 Sep 2007
Section 71-11
Engine Cowlings - TAE 125 Diesel Engine
1. General
The DA 40 has two carbon fiber reinforced plastic (CFRP) panels which make the engine cowlings. A
top cowling and a bottom cowling. CFRP is very strong and is easy to maintain. The cowlings give a
good aerodynamic shape to the nose of the airplane. They are very easy to remove and give good
access to the engine.
Refer to Section 51-20 for repair data for the cowlings. Refer to Section 51-60 for data on the quickrelease
fasteners.
2. Description
Figure 1 shows the cowlings.
Camloc quick-release fasteners attach the cowlings to each other and to the fuselage. Both the cowlings
are very light and one person can hold them easily.
The top cowling has a small access panel for the engine oil filler. The access panel attaches to the top
cowling with a hinge.
The top cowling also has two air intakes. The left intake gives cooling air for the engine cooling system
radiator. The right intake supplies air for the engine intercooler.
The bottom cowling allows access to the oil level window in the reduction gear. It has an air intake for
the oil radiator at the bottom. It also has air intakes for the cabin heat heat-exchanger and the engine
air filter on the right side.
AIRCRAFT
Power Plant DA 40 Series
AMM
Page 2
20 Sep 2007 71-11-00 Doc # 6.02.01
Rev. 5
Top Cowling
Bottom Cowling
Oil Filler Access Panel
Air Intake for
Intercooler
Air Intake for
Engine and
Cabin Heat Camloc Fasteners
Camloc Fasteners
Air Intake for
Coolant Radiator
Air Intake for
Oil Radiator
Access Panel for
External Power Connection
Figure 1: Engine Cowlings
AIRCRAFT
DA 40 Series
AMM
Power Plant
Doc # 6.02.01
Rev. 5 71-11-00 Page 101
20 Sep 2007
Trouble-Shooting
1. General
The table below lists the defects you could have with the engine cowlings. If you have the trouble
detailed in the Trouble column read across to the Possible Cause column. Then do the repair in the
Repair column.
Trouble Possible Cause Repair
Outer surface of the cowling
discoloured. Paint blistered.
Black soot on the inner surface.
Engine overheating.
Hot gas leak.
Engine fire.
Examine the engine for hot gas
leaks. Examine the exhaust for
cracks and leaking gaskets.
Replaced damage items.
Repaint the cowlings.
Oil/fuel/coolant on the inner
surface of the cowling.
Oil, fuel or coolant leak. Examine the engine. Look
specially for oil, fuel and coolant
leaks. Correct problems which
you have found. Clean the
cowling.
AIRCRAFT
Power Plant DA 40 Series
AMM
Page 102
20 Sep 2007 71-11-00 Doc # 6.02.01
Rev. 5
Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Power Plant
Doc # 6.02.01
Rev. 5 71-11-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
This Section contains the maintenance practices for the cowlings. It tells you how to remove/install the
cowlings. It also tells you how to clean and paint the cowlings.
2. Remove the Engine Cowlings
A. Remove the Top Cowling
WARNING: YOU MUST MAKE SURE THAT THE ENGINE IS SAFE BEFORE YOU
WORK NEAR TO THE PROPELLER.
- SET THE ELECTRIC MASTER KEY SWITCH TO "OFF".
- SET THE ENGINE MASTER SWITCH TO "OFF".
- SET THE POWER LEVER TO "IDLE".
Detail Steps/Work Items Key Items/References
(1) Release the quick-release fasteners which hold
the top cowling.
Refer to Figure 1.
(2) Pull the side of the cowling gently outwards and
upwards.
(3) Move the top cowling away from the airplane.
B. Remove the Bottom Cowling
Detail Steps/Work Items Key Items/References
(1) Release the quick-release fasteners which hold
the bottom cowling.
Hold the bottom cowling!
(2) Remove the bottom cowling:
S Lower the rear of the cowling.
S Move the cowling down and forward.
S Move the cowling clear of the airplane.
　
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