Continental Refrigerator IOF-240-B, Руководство по обслуживанию

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Teledyne Continental Motors, Inc.
TM
Maintenance Inspections
IOF-240 Series Engine Maintenance Manual 7-25
31 August 2007 Change 1
NOTE: If the Cylinder Borescope Inspection does not reveal a
faulty condition, fly the aircraft at a cruise power setting between
65 and 75 percent power, as specified in the Airplane Flight
Manual/Pilot’s Operating Handbook, for at least 45 minutes to
allow the engine oil and cylinder head temperatures to stabilize.
Repeat the Differential Pressure Test on the suspect cylinder(s).
To inspect the static seals of a cylinder that has been removed (and still has the spark
plug installed), invert the cylinder and fill the bore with nonflammable solvent and
inspect for leaks at the static seals. Replace any cylinder with static seal leaks.
Table 7-4. Summary of Seal Checks and Corrective Actions
Check Area to
Check Results Possible Finding Corrective Action
Piston cracked or out of
limits Replace piston
Worn rings Replace rings
Test gauge
below tolerance
Cylinder wall dimensions
out of limits Replace cylinder
Dynamic
Seal Check
Piston ring
Test gauge
above tolerance None None
Loose helical coil Replace helical coil Spark Plug-
to-Port Seal Apply soapy
solution around
spark plug
Cracked cylinder Replace cylinder
Cylinder
Head-to-
Barrel Seal Apply soapy
solution between
cylinder head
and barrel Bubbles Replace cylinder
Cylinder
Head Cracks Apply soapy
solution around
fins Bubbles Replace cylinder
Carbon Stake valve
Cracked cylinder Replace cylinder
Seat worn or burned Grind or replace
and re-inspect
Static Seal
Check*
Intake Valve-
to-Seat Seal Listen for air flow
in intake port
Valve worn or burned Grind or replace
and re-inspect
Carbon deposits Stake valve
Cracked cylinder Replace cylinder.
Seat worn or burned Grind or replace
and re-inspect
Static Seal
Check
Exhaust
Valve-to-Seat
Seal
Listen for air flow
in exhaust port
Valve worn or burned Replace and re-
inspect
* No leakage allowed