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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.
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.
AIRCRAFT
DA 40 Series
AMM
Servicing
Detail Steps/Work Items Key Items/References
Doc # 6.02.01
Rev. 5 12-10-00 Page 11
20 Sep 2007
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.
AIRCRAFT
Servicing DA 40 Series
AMM
Page 12
20 Sep 2007 12-10-00 Doc # 6.02.01
Rev. 5
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.
(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.
(3) Drain the coolant:
S Remove the drain plug from the left side of
the coolant radiator near the bottom.
S Open the drain plug on the engine RH lower
side above the turbo-charger.
S Close the coolant drain plug above the turbocharger.
S Install the drain plug to the coolant radiator.
Use a suitable container to catch the
coolant.
% You do not need to remove this drain
plug. Use a suitable duct to guide the
coolant into the container.
Use a new copper gasket.
(4) Visually check the coolant for oil. No oil allowed in coolant.
AIRCRAFT
DA 40 Series
AMM
Servicing
Detail Steps/Work Items Key Items/References
Doc # 6.02.01
Rev. 5 12-10-00 Page 13
20 Sep 2007
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.
(5) 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.
(6) 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.
(7) 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.
(8) Remove the pressure cap from the coolant tank:
　
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