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column. Then do the repair in the Repair column.
Trouble Possible Cause Repair
More than usual oil
consumption.
Gasket or seal leakage. Replace the gasket/oil seal.
Air/Oil separator blocked. Replace the air/oil separator.
High oil temperature indication. The oil cooler air holes blocked. Clean the oil cooler air holes
with a soft brush.
The oil cooler oil passages
blocked.
Replace the oil cooler
The vernatherm valve held
open by debris.
Remove the vernatherm
valve. Clean and reinstall the
valve. If still not correct
replace the valve.
Low oil temperature indication. Vernatherm valve defective. Replace the vernatherm
valve.
Low oil pressure indication. Blocked oil filter. Replace the oil filter.
High oil temperature indication. Defective temperature sensor. Replace the temperature
sensor.
Defective oil temperature
indicator.
Replace the oil temperature
indicator.
Defective engine. Refer to the Teledyne
Continental Motors
Maintenance Manual.
No oil temperature indication. Defective temperature sensor. Replace the temperature
sensor.
Defective electrical cable. Replace the defective
electrical cable.
Defective oil temperature
indicator.
Replace the oil temperature
indicator.
No indication from the engine
operated hours meter.
Defective engine operated
hours meter.
Replace the engine operated
hours meter.
Defective pressure switch. Replace the pressure switch.
Oil Systems
DA20-C1 AMM
Page 102
19 Dec 1997 79-00-00 Doc # DA 201-C1
Rev. 0
Trouble Possible Cause Repair
High oil pressure indication Defective oil pressure sensor. Replace the oil pressure
sensor.
Defective oil pressure indicator. Replace the oil pressure
indicator.
Defective engine. Refer to the Teledyne
Continental Motors
Maintenance Manual.
No oil pressure indication. Defective oil pressure sensor. Replace the oil pressure
sensor.
Defective oil pressure indicator. Replace the oil pressure
indicator.
Defective electrical cable. Replace the defective
electrical cable.
Defective engine. Refer to the Teledyne
Continental Motors
Maintenance Manual.
Oil leaks from the air/oil
separator vent.
Blockage of the engine oil
breather system.
Trouble shoot the engine oil
breather system.
Refer to the TCM IO-240B
Maintenance Manual.
DA20-C1 AMM
Oil Systems
Doc # DA 201-C1
Rev. 0 79-00-00 Page 201
19 Dec 1997
MAINTENANCE PRACTICES
1. General
These maintenance practices tell you how to remove and install these items:
− The engine oil filter.
− The vernatherm valve.
− The oil cooler.
− The oil temperature sensor.
− The oil pressure sensor.
− The Events Switch.
− The oil pressure indicator.
− The oil temperature indicator.
− The air/oil separator.
− The air/oil separator vent.
Refer to the Teledyne Continental Motors (TCM) Maintenance Manual for the procedures on how to
remove/install the engine gaskets/seals.
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
CAUTION: YOU MUST ATTACH BLANKS/CAPS TO HOLES/PIPES WHEN YOU
REMOVE COMPONENTS. IF YOU DO NOT DO THIS, UNWANTED
DEBRIS CAN ENTER THE HOLES/PIPES. THIS CAN CAUSE
BLOCKAGE TO THE ENGINE OIL SYSTEM.
Oil Systems
DA20-C1 AMM
Page 202
29 Apr 2004 79-00-00 Doc # DA 201-C1
Rev. 9
2. Remove/Install The Engine Oil Filter
A. Remove The Engine Oil Filter
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) Remove the oil drain plug. Drain the engine
oil into an approved container (with the
engine warm).
(3) Install a new gasket ring to the drain plug.
(4) Install the drain plug.
− Tighten the drain plug
− Lock the drain plug with safety wire.
Refer to the TCM Maintenance Manual.
Torque to 21.5-23.8 Nm (190-210 in lbs).
(5) Cut the safety wire from the engine oil filter.
(6) Remove the engine oil filter.
(7) Cut open the used oil filter. Look for
particles of metal.
If the filter contains particles of metal, refer
to the TCM Operators Manual.
B. Install The Engine Oil Filter
Detail Steps/Work Items Key Items
WARNING: DO NOT GET OIL ON YOU. OIL CAN CAUSE SKIN DISEASE.
(1) Examine the seal on the engine oil filter.
Look specially for correct installation.
− Wet the seal on the engine oil filter with
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