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% 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 quick-% release 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.
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Oil Filler Access Panel
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% 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.
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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.
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% 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".
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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.
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