Lycoming IVO-540 Series, Operator'S Manual

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SECTION 7 LYCOMING OPERATOR’S MANUAL
INSTALLATION AND STORAGE VO, IVO & TIVO-540 SERIES
Carburetor –
Remove the fuel drain plug and drain preservative oil. Remove the fuel inlet strainer assembly
and clean in a hydrocarbon solvent. Reinstall the fuel drain plug and fuel inlet strainer assembly. Check all
plugs before installing in airframe.
Fuel Injectors – Remove and clean the fuel inlet strainer assembly in a hydrocarbon solvent. Inject clean
fuel into the fuel inlet connection with the fuel outlets uncapped until clean fuel flows from the outlets. Do
not exceed 15 psi inlet pressure. Reinstall fuel inlet strainer assembly and check all plugs before installing in
airframe.
3. PREPARATION OF ENGINE FOR STORAGE. The following procedure is intended for application to
installed engines which are being removed from the aircraft, and will provide protection from corrosion for
a period of thirty or sixty days.
Preservative Run –
Immediately prior to removal of the engine from the aircraft, the engine should be given
a preservative run under the following conditions.
Fuel – Normal service fuel.
Oil – Drain regular oil and replace with preservative ty pe lubricating oil (Socony’s “Avrex 901”, Esso’s
“Rust Ban 626” or equivalent.
Duration of Run – Operate the engine for a period of four minutes, holding the engine speed to a maximum
of 2200 RPM. All precautions pertaining to ground running should be carefully observed. Cylinder head
temperature should not be allowed to exceed 475°F, and magneto temperatures should not be allowed to
exceed 180°F. Ignition harness temperatures should be held within the prescribed limits. At the completion
of the preservative run, while the engine is warm, drain the preservative oil.
NOTE
Preservative oil drained from a single engine may be saved and returned to the stock tank,
provided the mixture is replenished to the original quantity after the preservation of each
engine. Where the stock tank capacity is less than 10 gallons, the reuse of the mixture,
although replenished, shall be limited to one engine for each two gallons capacity. Where the
tank capacity is more than 10 gallons, the tank mixture shall be completely replaced at least
once every 30 hours of operation time.
Cylinders (Engine in Horizontal Position) – Disconnect the ignition harness elbows from the spark plugs
and remove the spark plugs. Starting with No. 1 cylinder, make certain the piston is at the bottom of the
compression stroke. Fill cylinder with preservative oil (use same oil specified for preservation run) and
rotate crankshaft until piston is at top center. Oil will spill out of the spark plug hole. In order to preserve the
top wall of the cylinder, it will be necessary to rock the engine, or blow compressed air with very light
pressure into the spark plug hole. Following the engine firing order, preserve the remaining cylinders in the
same manner. When all cylinders have been treated, then spray the exhaust port and exhaust 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 220°F (93°C to 104°C) for all spraying operations.
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