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1. General
The trouble-shooting given in this Section is limited to those items that you are allowed to do on the
engine. For all other engine troubles, you must refer to an approved TAE 125 repair facility or the
engine manufacturer.
Trouble Possible Cause Repair
Engine oil pressure low. Not enough oil in the engine oil
sump.
Fill the engine with oil.
Oil pressure regulator valve
does not operate correctly.
Refer to the engine
manufacturer.
Defective oil pump. Refer to the engine
manufacturer.
Gearbox oil temperature high. Not enough oil in the gearbox. Find the reason for the loss of
gearbox oil and correct the
problem. Fill the gearbox with
oil.
AIRCRAFT
Engine DA 40 Series
AMM
Page 102
20 Sep 2007 72-01-00 Doc # 6.02.01
Rev. 5
Intentionally left blank
AIRCRAFT
DA 40 Series
AMM
Engine
Doc # 6.02.01
Rev. 5 72-01-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
These maintenance practices tell you how to service the oil system on the engine. You must refer to
an approved TAE 125 maintenance facility or the engine manufacturer for all other engine
maintenance.
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
CAUTION: ALWAYS PUT A CAP ON OPEN CONNECTIONS. IF YOU DO NOT PUT
A CAP ON OPEN CONNECTIONS, THEN CONTAMINATION CAN GET
INTO THE SYSTEM AND CAUSE DAMAGE.
CAUTION: DO NOT MIX OIL TYPES. IF YOU MIX OIL TYPES THE OIL CAN LOSE
ITS PROPERTIES AND THE ENGINE WILL WEAR MORE QUICKLY.
2. Change the Engine Oil and Replace the Engine Oil Filter
Detail Steps/Work Items Key Items/References
(1) Run the engine until it reaches the normal
operating temperature. Then shut-down the
engine.
Refer to Section 71-01.
% WARNING: MAKE SURE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK
ON THE OIL SYSTEM. IF THE ENGINE STARTS THE PROPELLER
CAN CAUSE INJURY OR DEATH.
(2) 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.
(3) Remove the engine cowlings. Refer to Section 71-11.
(4) Remove the engine oil.
S Remove the oil drain plug.
S Drain the engine oil.
S Visually check engine oil for coolant (no
coolant allowed in oil).
Refer to Figure 1.
Use a suitable container to catch the oil.
AIRCRAFT
Engine DA 40 Series
AMM
Detail Steps/Work Items Key Items/References
Page 202
20 Sep 2007 72-01-00 Doc # 6.02.01
Rev. 5
(5) Install the drain plug.
S Tighten the drain plug.
S Lock the drain plug with lock-wire.
Use a new seal washer (TAE part no.
02-7250-03126R1).
(6) Replace the oil filter:
S Open the oil filter cartridge.
S Remove the oil filter.
S Replace the ring seals.
S Install the new oil filter.
S Close the cartridge.
TAE part no. 02-7250-03703R1.
Torque: 25 Nm (18.4 ft.lbf).
(7) Cut open the used oil filter. Look for particles of
metal.
If the filter contains particles of metal,
refer to the engine manufacturer.
% CAUTION: YOU MUST USE AN ENGINE OIL THAT AGREES WITH THE
% SPECIFICATION IN THE AIRPLANE FLIGHT MANUAL, CHAPTER 2.
(8) Fill the engine with new engine oil. Refer to Section 12-10.
(9) Do an engine run.
(10) Check for oil leakage.
(11) Install the engine cowlings. Refer to Section 71-11.
AIRCRAFT
DA 40 Series
AMM
Engine
Doc # 6.02.01
Rev. 5 72-01-00 Page 203
20 Sep 2007
3. Change the Gearbox Oil and Replace the Gearbox Oil Filter
Detail Steps/Work Items Key Items/References
(1) Run the engine until it reaches the normal
operating temperature. Then shut-down the
engine.
Refer to Section 71-01.
% WARNING: MAKE SURE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK
ON THE OIL SYSTEM. IF THE ENGINE STARTS THE PROPELLER
CAN CAUSE INJURY OR DEATH.
(2) 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.
(3) Remove the engine cowlings. Refer to Section 71-11.
(4) Remove the gearbox oil drain plug. Refer to Figure 1.
Use a suitable container to catch the oil.
(5) Drain the gearbox oil. Use a suitable container to catch the oil.
(6) Remove the cover from the gearbox oil filter.
(7) Remove the gearbox oil filter element. Examine the filter for signs of metal
particles. If you find metal particles,
refer to the engine manufacturer.
(8) Install the gearbox oil drain plug. Use a new seal washer (TAE part no.
　
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