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Engine Indicating
DA20-C1 AMM
Page 4
19 Dec 1997 77-00-00 Doc # DA 201-C1
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DA20-C1 AMM
Engine Indicating
Doc # DA 201-C1
Rev. 0 77-00-00 Page 101
19 Dec 1997
TROUBLE SHOOTING
1. General
The table below lists the defects you could have with the RPM indicator. And the defects you could
have with the engine temperature indicators. If you have the trouble detailed in the Trouble column
read across to the Possible Cause column. Then do the repair in the Repair column.
Trouble Possible Cause Repair
No RPM indication. Defective flexible shaft. Replace the flexible shaft of
the RPM indicator.
Defective RPM indicator. Replace the RPM indicator.
Incorrect RPM indication Defective RPM indicator. Replace the RPM indicator.
No cylinder head temperature
indication.
Defective thermocouple probe. Replace the thermocouple
probe.
Defective electrical cable. Repair the defective electrical
cable.
Defective cylinder head
temperature indicator.
Replace the defective cylinder
head temperature indicator.
High cylinder head temperature
indication.
Defective engine. Refer to the Teledyne
Continental Motors
Maintenance Manual.
Defective cylinder head
temperature indicator.
Replace the defective cylinder
head temperature indicator.
No exhaust gas temperature
indication.
Defective thermocouple probe. Replace the thermocouple
probe.
Defective electrical cable. Repair the defective electrical
cable.
Defective exhaust gas
temperature indicator.
Replace the defective exhaust
gas temperature indicator.
High exhaust gas temperature
indication.
Defective engine. Refer to the Teledyne
Continental Motors
Maintenance Manual.
Defective exhaust gas
temperature indicator.
Replace the defective exhaust
gas temperature indicator.
Engine Indicating
DA20-C1 AMM
Page 102
19 Dec 1997 77-00-00 Doc # DA 201-C1
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DA20-C1 AMM
Engine Indicating
Doc # DA 201-C1
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MAINTENANCE PRACTICES
1. General
These maintenance practices tell you how to remove/install these items:
− RPM indicator.
− Flexible drive from the engine to the RPM indicator.
− Thermocouple probe for the cylinder-head temperature (CHT).
− Thermocouple probe for the exhaust-gas temperature (EGT).
− Cylinder-head temperature indicator.
− Exhaust-gas temperature indicator.
WARNING: MAKE SURE THE EXHAUST SYSTEM IS COOL BEFORE YOU DO
WORK ON THE SYSTEM. THE EXHAUST SYSTEM CAN BE HOT.
THIS CAN CAUSE INJURY TO PERSONS.
Refer to the Teledyne Continental Motors Maintenance Manual for data on the engine.
2. Remove/Install The RPM Indicator
A. Remove The RPM Indicator
Detail Steps/Work Items Key Items
(1) Remove the instrument panel cover. Refer to Chapter 25-10
(2) Remove the flexible drive from the rear of
the RPM indicator:
− Disconnect the knurled nut on the end of
the flexible drive from the rear of the
RPM indicator.
− Carefully remove the drive shaft from the
RPM indicator.
(3) Remove the four mounting screws from the
RPM indicator at the front of the instrument
panel. And remove the RPM indicator.
Engine Indicating
DA20-C1 AMM
Page 202
29 Apr 2004 77-00-00 Doc # DA 201-C1
Rev. 9
B. Install The RPM Indicator
Detail Steps/Work Items Key Items
(1) Position the RPM indicator in the instrument
panel. And install the four mounting screws.
Refer to Chapter 31-10.
(2) Put the end of the flexible drive shaft into the
rear of the RPM indicator. And install the
knurled nut of the drive shaft onto the rear of
the RPM indicator.
(3) Install the instrument panel cover. Refer to Chapter 25-10
(4) Do an engine run up test. Make sure the
RPM indication is correct.
Refer to the DA20-C1 Flight Manual.
3. Remove/Install The RPM Indicator Flexible Drive
A. Remove The RPM Indicator Flexible Drive
Detail Steps/Work Items Key Items
(1) Remove the instrument panel cover. Refer to Chapter 25-10
(2) Remove the flexible drive from the rear of
the RPM indicator:
− Disconnect the knurled nut on the end of
the flexible drive from the rear of the
RPM indicator.
− Carefully remove the drive shaft from the
RPM indicator.
WARNING: DO NOT STAND WITHIN THE DANGER AREA OF THE
PROPELLER. IF YOU DO THIS, A DAMAGED COMPONENT CAN
　
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