LYCOMING OPERATOR’S MANUAL
SECTION 4
IO-320 SERIES
PERIODIC INSPECTIONS
(3) Check ignition harness for security of mounting clamps and be sure connections are tight at spark
plug and magneto terminals.
b. Fuel and Induction System –
Check the primer lines (where applicable) for leaks and security of the
clamps. Remove and clean the fuel inlet strainers. Check the mixture control and throttle linkage for
travel, freedom of movement, security of the clamps and lubricate if necessary. Check the air intake
ducts for leaks, security, filter damage; evidence of dust or other solid material in the ducts is
indicative of inadequate filter care or damaged filter. Check vent lines for evidence of fuel or oil
seepage; if present, fuel pump may require replacement.
c. Lubrication System (Engines Equipped with an External Full Flow Oil Filter) –
(1) Remove oil suction and oil pressure screens and check carefully for presence of metal particles
that are indicative of internal engine damage.
(2) Replace external full flow oil filter element. Drain and renew lubricating oil.
NOTE
Change the oil at least every four (4) months event if the engine has not accumulated 50
hours since the last oil change.
(3) Check oil leaks, particularly at connections for security of anchorage and for wear due to rubbing
or vibration, for dents and cracks.
d. Exhaust System –
Check attaching flanges at exhaust ports on cylinder for evidence of leakage. If they
are loose, they must be removed and machined flat before they are reassembled and tightened.
Examine exhaust manifolds for general condition.
e. Cooling System –
Check cowling and baffles for damage and secure anchorage. Any damaged or
missing part of the cooling system must be repaired or replaced before the aircraft resumes operation.
f.
Cylinders –
Check rocker box covers for evidence of oil leaks. If found, replace gasket and tighten
screws to specified torque (50 inch lbs.).
Check cylinders for evidence of excessive heat which is indicated by burned paint on the cylinder.
This condition is indicative of internal damage to the cylinder and, if found, its cause must be
determined and corrected before the aircraft resumes operation.
4. 100-HOUR INSPECTION.
In addition to the items listed for daily pre-flight and 50-hour inspection, the
following maintenance checks should be made after every one hundred hours of operation.
a. Electrical System –
(1) Check all wiring connected to the engine or accessories. Any shielded cables that are damaged
should be replaced. Replace clamps or loose wires and check terminals for security and
cleanliness.
(2) Remove spark plugs; test, clean and regap. Replace if necessary.
4-3
Содержание AIO-320
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