Lycoming AIO-360 Series, Руководство оператора

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LYCOMING OPERATOR’S MANUAL SECTION 5
O-360 AND ASSOCIATED MODELS MAINTENANCE PROCEDURES
If step (4) indicates that the idle adjustment is too rich or too lean, turn the idle mixture
adjustment in direction required for correction, and checkthis new position by repeating the above
procedure. Make additional adjustments as necessary until a checkresults in a momentary pick-up
of approximately 50 RPM. Each time the adjustment is changed, the engine should be run up to
2000 RPM to clean the engine before proceeding with the RPM check. Make final adjustment of
the idle speed adjustment to obtain the desired idling RPM with closed throttle. The above method
aims at a setting that will obtain maximum RPM with minimum manifold pressure. In case the
setting does not remain stable, checkthe idle linkage;any looseness in this linkage would cause
erratic idling. In all cases, allowance should be made for the effect of weather conditions and field
altitude upon idling adjustment.
3. LUBRICATION SYSTEM.
a. Oil Grades and Limitations –
Service the engine in accordance with the recommended grade oil as
specified in Section 3, Item 8.
b. Oil Suction and Oil Pressure Screens –
At each 100-hour inspection remove suction screen. Inspect
for metal particles;clean and reinstall. Inspect and clean pressure screen every 25 hours.
c. Oil Pressure Relief Valve –
Subject engines may be equipped with either an adjustable or non-
adjustable oil pressure relief valve. A brief description of both types follows:
(1)
Non-Adjustable Oil Pressure Relief Valve –
The function of the oil pressure relief valve is to
maintain engine oil pressure within specified limits. The valve, although not adjustable, may
control the oil pressure with the addition of a maximum of nine (9) P/N STD-425 washers
between the cap and spring to increase the pressure. Removal of the washers will decrease the oil
pressure. Some early model engines use a maximum of three (3) P/N STD-425 washers to
increase the oil pressure and the use of a P/N 73629 or P/N 73630 spacer between the cap and
crankcase to decrease the oil pressure. Particles of metal or other foreign matter lodged between
the ball and seal will result in faulty readings. It is advisable, therefore, to disassemble, inspect
and clean the valve if excessive pressure fluctuations are noted.
(2)
Oil Pressure Relief Valve (Adjustable) –
The adjustable oil relief valve enables the operator to
maintain engine oil pressure within the specified limits. If pressure under normal operating
conditions should consistently exceed the maximum or minimum specified limits, adjust the
valve as follows:
With the engine warmed up and running at approximately 2000 RPM, observe the reading on
the oil pressure gage. If the pressure is above maximum or below minimum specified limits, stop
engine and screw the adjusting screw outward to decrease pressure or inward to increase
pressure. Depending on installation, the adjusting screw may have only a screw driver slot and is
turned with a screw driver;or may have the screw driver slot plus a pinned .375-24 castellated
nut and may be turned with either a screw driver or a boxwrench.
4. CYLINDERS.
It is recommended that as a field operation, cylinder maintenance be confined to
replacement of the entire assembly. For valve replacement, consult the proper overhaul manual. This should
be undertaken only as an emergency measure.
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