Maintenance Inspections
Teledyne Continental Motors, Inc.
TM
7-38
IOF-240 Series Engine Maintenance Manual
Change 1
31 August 2007
1.
Level I Diagnostic in Chapter 8 in conjunction with the Engine
2.
g, deterioration and insulation
3.
Verify the high voltage leads are securely fastened to the ECU spark towers.
7-3.9. Induction System Inspection
Purpose
Check the integrity of the air filter, seals, and airbox to prevent particulates from entering
the engine that can abrade cylinder walls and ring faces thereby damaging the engine.
Frequency
During 100-hour or annual inspection
Procedure
1.
Remove and inspect the induction air filter for cleanliness, normal operation and the
absence of gaps or leaks in the filtering element. Verify the air filter seal prevents
airflow except through the filter. Correct or replace as necessary in accordance with
the airframe manufacturer/STC holder’s information.
2.
Verify the integrity of the airbox; look for alternate air circuits which can bypass the
filtering system. Any holes or bypass circuits found behind the filtering element
should be repaired as required in accordance with the airframe manufacturer/STC
holder’s information.
3.
Verify the operation of the alternate air door and the integrity of the seal in the closed
position. Verify the door operating mechanism closes securely. Replace or repair as
necessary in accordance with the airframe manufacturer/STC holder’s information.
4.
If oil analyses are done on engine oil samples, check the silicone content of the most
recent oil analysis and the overall silicone trend to further assess the possibility of
Induction System leaks or pilot operational issues such as extensive use of carburetor
heat or alternate air during ground operation.
7-3.10. Ignition System Inspection
Purpose
Verify that the following:
•
FADEC components are free of damage and operating within tolerance
•
SSA is properly detecting engine timing
•
Ignition leads are intact and secure
•
Spark plugs are clean, operating properly, and gapped appropriately
Frequency
During 100-hour or annual inspection
Procedure
Perform the FADEC
Operational Check.
Visually inspect the ignition leads for chafin
breakdown. Replace worn or frayed ignition wires.
WARNING
Failure to maintain the spark plugs and ignition leads can
cause engine damage or failure.