2-58a FUEL ADDITIVES. Operating the aircraft with fuel anti-icing fuel additive, MIL-1-27686, is approved.
It must be uniformly blended with the fuel while refueling, must not exceed .15% by volume of the refueled
quantity and must be blended at not less than .10% volume 1 1/2 liquid oz.’s per 10 gallons of fuel would fall
within this range. Use a blender supplied by the additive manufacturer. Except for the information contained in
this section, the manufacturer’s mixing or blending instructions should be carefully followed.
—CAUTION—
Assure that the additive is directed into flowing fuel stream. The additive
flow should start after and stop before the fuel flow. Do not permit the
concentrated additive to come in contact with the aircraft painted surfaces
or the interior surfaces of the fuel tanks.
Some fuels have anti-icing additives preblended in the fuel at the refinery,
so no further blending should be performed.
Fuel additive cannot be used as a substitute for preflight draining of the
fuel system drains.
2-59. ELECTRICAL SYSTEM.
2-60. SERVICING ELECTRICAL SYSTEM. Servicing the electrical system involves adding distilled water to
the battery to maintain correct electrolyte level and checking cable connections and for any spilled electrolyte
that would lead to corrosion. The security of all electrical connections should be checked as well as the
operation of all lights, general condition of the alternator and starter. All electrical wires should be inspected
for chafing and bare wires. For detailed information on this system, refer to Section XI of this manual.
2-61. LUBRICATION.
2-62. OIL SYSTEM. (ENGINE.)
2-63. SERVICING OIL SYSTEM. The engine oil level should be checked before each flight and changed after
each 100-hours of engine operation. During oil change the oil screen(s) should be removed and cleaned, and
the oil filter cartridge replaced. Replace oil filter at 50-hour intervals. Use a quality brand aviation grade oil of
the proper season viscosity. Refer to Tables II-III and II-VI for proper oil grade and specification. For
information on the use of detergent oil, on the PA-28R-201 airplanes refer to Paragraph 2-69 and/or Lycoming
Service Instruction Letter 1014. Detergent oil that meets Continental Motors Corporation Specification MHS-
24, is the only recommended lubricating oil for the PA-28R-201T airplanes.
CAUTION
Do not introduce any trade additive to the basic lubricant unless
recommended by the engine manufacturer.
2-64. FILLING OIL SUMP. The oil sump should normally be filled with oil to the mark on the engine
dipstick. The quantity of oil required for the engines may be found in Table II-I. The specified grade of oil may
be found in Table II-III, the Lubrication Chart, or on the access door. To service the engine with oil, open the
access door and remove the oil filler cap.
Revised: 10/18/83
1B21
*CHEROKEE ARROW III SERVICE MANUAL
HANDLING AND SERVICING
Summary of Contents for ARROW III
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