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AMM
% 6. Coolant (TAE Version only)
% WARNING: ENGINE OPERATION WITH NO COOLANT (OR VERY LOW COOLANT % LEVEL) WILL CAUSE ENGINE MALFUNCTION OR FAILURE.
% The coolant capacity is 6 liters (6.3 US qts). A coolant level sensor is installed in the coolant tank at % the top rear of the engine. It operates the WATER LEVEL caution light in the Auxiliary Engine Display % (AED). Refer to Section 75-01 for more details about the coolant system.
% % A. Replenish the Coolant System
% CAUTION: IF THE COOLANT LEVEL IS LOW THE REASON MUST BE % DETERMINED AND THE PROBLEM MUST BE CORRECTED BY % AUTHORIZED PERSONNEL. REFER TO TAE SERVICE BULLETIN NO. % 125-0003.
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Detail Steps/Work Items Key Items/References
(1) Remove the engine top cowling. Refer to Section 71-11.
WARNING: DO NOT REMOVE THE PRESSURE CAP FROM THE COOLANT TANK IF THE ENGINE IS HOT. THE PRESSURE IN THE SYSTEM CAN FORCE HOT COOLANT TO COME OUT AND BURN YOU.
(2) Remove the pressure cap from the coolant tank: S Turn the cap counter-clockwise a small distance to release the pressure. S When the pressure has fully released, turn the cap fully counter-clockwise.
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DA 40 Series
Detail Steps/Work Items Key Items/References
CAUTION: USE ONLY THE CORRECT COOLANT. REFER TO CHAPTER 2 OF THE AIRPLANE FLIGHT MANUAL FOR THE CORRECT COOLANT SPECIFICATIONS. IF YOU DO NOT USE THE CORRECT COOLANT, THE ENGINE CAN BE DAMAGED.
(3) Fill the cooling system: S Open the bleed points on the cabin heat pipes. S Add coolant to the coolant tank. S When coolant comes from the bleed points without air bubbles, close the bleed points. S Install the cap to the coolant tank. Allow time for the coolant to move through the system. Fill coolant tank to the top.
(4) Do a ground run-up: S Let the coolant temperature rise up to the point where the coolant flows from the thermostat valve through the main circuit. S After shut-down, check for leaks. To circulate and remove air. Repair any leaks.
(5) Let the engine cool down.
WARNING: DO NOT REMOVE THE PRESSURE CAP FROM THE COOLANT TANK IF THE ENGINE IS HOT. THE PRESSURE IN THE SYSTEM CAN FORCE HOT COOLANT TO COME OUT AND BURN YOU.
(6) Remove the pressure cap from the coolant tank: S Turn the cap counter-clockwise a small distance to release the pressure. S When the pressure has fully released, turn the cap fully counter-clockwise.
(7) Check coolant level. Repeat items (5) to (8) until the system is completely de-aerated and full.
(8) Install the cap to the coolant tank.
(9) Install the engine top cowling. Refer to Section 71-11.
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% B. Change the Coolant %
Detail Steps/Work Items Key Items/References
(1) Remove the engine cowlings. Refer to Section 71-11.
WARNING: DO NOT REMOVE THE PRESSURE CAP FROM THE COOLANT TANK IF THE ENGINE IS HOT. THE PRESSURE IN THE SYSTEM CAN FORCE HOT COOLANT TO COME OUT AND BURN YOU.
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