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Power Plant
AMM

% Section 71-61 % Air Intakes - TAE 125 Diesel Engine % 1. General
% An air filter housing, air filter and alternate air valve assembly make the engine air intake system for % the DA 40 airplane. The engine bottom cowling has a molded air intake duct and a flexible seal % attached to the air filter housing. Figure 1 shows the engine air filter and alternate air valve.
% 2. Description
% The air intake has 3 main parts:
%) Alternate air valve assembly.
%) Air filter housing.
%) Air filter.
% A. Alternate Air Valve Assembly
% Refer to Figure 1. The alternate air valve is attached to the top face of the air filter housing. The % air filter attaches to the bottom of the alternate air valve. The alternate air valve also has an inlet % direct from the engine compartment. A flap in the valve can select either filtered air or warm, % unfiltered air.
% B. Air Filter Housing
% The air filter housing is made of sheet aluminum. It has a flexible seal which makes a seal between % the air intake assembly and the engine bottom cowling. 2 bolts attach the air filter housing to the % engine mount.
% C. Air Filter
% Refer to Figure 1. The air filter is a K&N RB-0700 or RD-0700 high-flow air filter. The air filter % locates on the air filter housing, on the right of the engine compartment, just forward of the firewall. % It is held to the bottom of an alternate air valve by a worm-drive clamp.
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Swivel Fitting

% Figure 1: Engine Air Filter and Alternate Air Valve %
71-61-00
Power Plant
AMM

% Trouble-Shooting % 1. General
% The table below lists the defects you could have with the air intake system. 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.
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Trouble  Possible Cause  Repair 
Engine does not develop full power.  Air filter blocked/defective.  Replace air filter. 

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Power Plant
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% Maintenance Practices % 1. General
% These maintenance practices tell you how to remove and install the air filter and the alternate air valve % assembly. They also tell you how to adjust, remove and install the alternate air control cable.
% Refer to the TAE 125-01 Operator's Manual for the data on the fuel injection system.
% 2. Remove/Install the Air Filter
% A. Remove the Air Filter % %

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Detail Steps/Work Items  Key Items/References 
WARNING: DO NOT STAND WITHIN THE DANGER AREA OF THE PROPELLER. IF THE ENGINE STARTS, THE PROPELLER CAN CAUSE DEATH OR INJURY TO PERSONS. WARNING: YOU MUST MAKE SURE THAT THE ENGINE IS SAFE BEFORE YOU DO WORK ON THE ENGINE CONTROLS. IF THE PROPELLER TURNS IT CAN CAUSE INJURY TO PERSONS. 
(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. 
　
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