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clean engine oil.
(2) Install the engine oil filter.
− Tighten the oil filter.
− Lock the oil filter with safety wire.
Torque to 24.5 - 27.2 Nm (216 - 240 in
lbs).
(3) Fill the engine with new oil. Refer to the TCM Maintenance Manual for
oil specifications and quantity.
(4) Install the engine cowlings. Refer to Chapter 71-10
(5) Do an engine run up test. For the engine run procedure refer to the
DA20-C1 Flight Manual.
DA20-C1 AMM
Oil Systems
Doc # DA 201-C1
Rev. 0 79-00-00 Page 203
19 Dec 1997
Detail Steps/Work Items Key Items
(6) Remove the engine cowlings. Refer to Chapter 71-10
(7) Examine the engine for oil leaks.
(8) Install the engine cowlings. Refer to Chapter 71-10
3. Remove/Install The Oil Cooler
A. Remove Oil Cooler
Detail Steps/Work Items Key Items
(1) Remove the engine cowlings. Refer to Chapter 71-10
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
(2) Disconnect the oil hose from the aft
connection at the side of the oil cooler:
− Drain the remaining engine oil into an
approved container.
− Put a cap on the hose end.
(3) Disconnect the oil hose from the forward
connection at the side of the oil cooler:
− Drain the remaining engine oil into an
approved container.
− Put a cap on the hose end.
(4) Remove the nuts, bolts and washers that
attach the oil cooler to the two brackets at
the firewall.
(5) Move the plenum chamber with the flexible
air pipe clear of the oil cooler.
(6) Carefully pull the oil cooler forward. And
remove the oil cooler.
− Put caps on the oil inlet and outlet holes
in the oil cooler.
Oil Systems
DA20-C1 AMM
Page 204
29 Apr 2004 79-00-00 Doc # DA 201-C1
Rev. 9
B. Install The Oil Cooler
Detail Steps/Work Items Key Items
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
(1) Remove the caps from the oil inlet and outlet
holes on the oil cooler.
− Drain the preservation oil from the oil
cooler.
(2) Examine the oil cooler for damage. Look
specially for damage to the matrix.
(3) Carefully position the oil cooler into the
brackets at the firewall.
(4) Put the plenum chamber with the flexible air
pipe attached in position on the top of the oil
cooler.
(5) Install the oil cooler:
− Tighten the nuts and bolts.
(6) Remove the cap from the inlet oil hose.
Connect the inlet oil hose to the aft
connection at the oil cooler.
− Tighten the oil hose connection.
Make sure you connect the aft oil hose to
the aft connector on the oil cooler.
Torque to 17 Nm (150 in lbs).
(7) Remove the cap from the outlet oil hose.
Connect the outlet oil hose to the forward
connection at the oil cooler.
− Tighten the oil hose connection.
Make sure you connect the forward oil
hose to the forward connector on the oil
cooler.
Torque to 17 Nm (150 in lbs).
(8) Install the engine cowlings. Refer to Chapter 71-10
(9) Do an engine run up test. For the engine run procedure refer to the
DA20-C1 Flight Manual.
(10) Remove the engine cowlings. Refer to Chapter 71-10
(11) Examine the engine for oil leaks.
(12) Install the engine cowlings. Refer to Chapter 71-10
DA20-C1 AMM
Oil Systems
Doc # DA 201-C1
Rev. 9 79-00-00 Page 205
29 Apr 2004
4. Remove/Install The Vernatherm Valve
A. Remove The Vernatherm Valve
Detail Steps/Work Items Key Items
Note: You can remove the vernatherm valve with the oil filter installed. But it will be
easier to remove the vernatherm valve with the oil filter removed.
(1) Remove the engine cowlings. Refer to Chapter 71-10
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
(2) Remove the engine oil filter. Refer to Chapter 79-00.
(3) Cut the safety wire from the vernatherm
valve.
(4) Remove the vernatherm valve from the oil
cooler adaptor.
− Discard the oil seal.
B. Install The Vernatherm Valve
Detail Steps/Work Items Key Items
(1) Install a new oil seal to the vernatherm
valve. And install the vernatherm valve to
the oil cooler adaptor.
− Tighten the vernatherm valve.
− Lock the vernatherm valve to the oil
cooler adaptor with safety wire.
Torque to 49.6-52.1 Nm (440-460 in lbs)
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
(2) Install the engine oil filter. Refer to Chapter 79-00.
(3) Install the engine cowlings. Refer to Chapter 71-10
(4) Do an engine run up test. For the engine run procedure refer to the
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