SECTION 7 LYCOMING OPERATOR’S MANUAL
INSTALLATION AND STORAGE IO-320 SERIES
2. PREPARATION OF FUEL INJECTORS FOR STORAGE.
Fuel injectors that have been prepared for storage should undergo the following procedures before being
placed in service.
Remove and clean the fuel inlet strainer assembly and reinstall. Inject clean fuel into the fuel inlet
connection with the fuel outlet uncapped until clean fuel flows from the outlets. Do not exceed 15 psi inlet
pressure.
3. PREPARATION OF ENGINE FOR STORAGE OR SHIPMENT.
General cation to installed engines, which are being
removed from aircraft and will provide protection from corrosion for a period of 30 to 60 days.
Preservation Run from the aircraft, the engine should be given
a preservation run under the following operating conditions.
Fuel
Oil
Duration of Run minutes, holding the engine speed to a maximum
of 1800 RPM. All precautions pertaining to ground running should be carefully observed. Cylinder head,
ignition harness, and magneto temperatures should not be allowed to exceed the prescribed limits.
Compound Injection n the preservative oil from the engine
and remove, clean and replace the oil suction and oil pressure screens. Perform any of the engine checks,
such as valve clearance or ignition timing, which require rotation of the crankshaft. Disconnect the ignition
harness and remove the spark plugs. Starting with cylinder no. 1, make certain piston is at the bottom of
compression stroke. Fill cylinder with preservative oil (use same oil as specified for preservation run) and
rotate crankshaft until piston is at top center. Oil will spill out of spark plug hole. In order to preserve the
top wall of the cylinder, it will be necessary to either rock the engine, or blow compressed air with very light
pressure into the spark plug hole. Following the engine firing order, preserve the remainder of the cylinders
in the same manner. When all cylinders have been treated, then spray the exhaust port and valve of each
cylinder with the piston ¼ turn before top center on the exhaust stroke. When absolutely certain that no
further need exists for turning the crankshaft, again spray each cylinder through the spark plug holes.
(Maintain spray nozzle temperature at 200°F to 200°F (93°C to 104°C) for all spraying operations.)
Installation of Seals and Plugs ycoming P/N 40238 or equivalent) in
spark plug holes. Install ignition cable protectors (Lycoming P/N 40239 or equivalent) over the spark plug
terminal of each ignition cable and secure by attaching to the end of the dehydrator plug. Flush all accessory
drives for which oil seals are provided with preservative oil before assembling the drive covers. Suitable
covers should be used in sealing the exhaust ports; moisture resistant tape (Minnesota Mining and
Manufacturing Company, 711 Acetate Fibre Tape or equivalent) will be sufficient for the ground
connections and similar openings. Install a plug (Lycoming P/N 1540 or equivalent) in the thermometer well
at the rear of the oil pressure screen housing. Install sealing caps (Lycoming P/N 61595 or equivalent) over
the breather opening and (Lycoming P/N 61596 or equivalent) over the generator or alternator blast tube.
Install tachometer drive cap (Lycoming P/N 61545 or equivalent) over tachometer drive. Make sure all other
openings are properly sealed.
7-2
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