Piper ARROW III Service Manual

2-67. RECOMMENDATIONS FOR CHANGING OIL. The engine manufacturer recommends that the oil
supply be drained and the entire sump filled with fresh oil after each 100 hours of engine operation. Always
start and warm the engine to operating temperature before performing an oil change. While draining the oil,
the screens should be removed from the crankcase cover and cleaned thoroughly. If sludge deposits are heavy,
subsequent oil changes should be made at shorter intervals.
a. Note the following for Continental engines:
1. D e t e rgent oil that meets Continental Motors Corporation Specification MHS-24, is the only
recommended lubricating oil.
2. Use SAE-30 or 10W-30 below 40°F and SAE-50 above 40°F. When the average ambient air
temperature is approximately at the dividing line, use the lighter oil.
b. Note the following for Lycoming engine:
1. N o n - d e t e rgent oil that meets MIL-L-6082 specification is recommended by Lycoming. (See
Lubrication Chart.)
2. For use of detergent oil note the following: Also refer to the latest revision of Lycoming Service
Information No. 1014.
(a) In engines that have been operating on straight mineral oil for several hundred hours, a change
to additive oil should be made with a degree of caution, since the cleaning action of some
additive oils will tend to loosen sludge deposits and cause plugged oil passages. When an
engine has been operating on straight mineral oil and is known to be in excessively dirty
condition, the switch to additive or compounded oil should be deferred until after the engine is
overhauled.
(b) When changing from straight oil to compound oil, the following precautionary steps should be
taken:
(1) Do not add additive oil to straight mineral oil. Drain the straight mineral oil from the
engine and fill with additive oil.
(2) Do not operate the engine longer than five hours before the first oil change.
(3) Check all oil screens for evidence of sludge or plugging and change oil every ten hours if
sludge conditions are evident. Resume normal oil drain periods after sludge conditions
improve.
2-68. LUBRICATION INSTRUCTIONS. Proper lubrication procedures are of immeasurable value both as a
means of prolonging the service life of the airplane and as a means of reducing the frequency of extensive and
expensive repairs. The periodic application of recommended lubricants to their relevant bearing surfaces, as
detailed in the following Paragraphs, together with the observance of cleanliness will insure the maximum
e fficiency and utmost service of all moving parts. Lubrication instruction regarding the locations, time
intervals, and type of lubricants used may be found in the Lubrication Chart. To insure the best possible results
from the application of lubricants, the following precautions should be observed:
Revised: 8/31/77
1B23
*CHEROKEE ARROW III SERVICE MANUAL
HANDLING AND SERVICING

Piper ARROW III Specifications

General

Manufacturer	Piper Aircraft
Model	ARROW III
Engine	Lycoming IO-360-C1C6
Horsepower	200 hp
Maximum Takeoff Weight	2, 750 lb (1, 247 kg)
Seating Capacity	4
Propeller	2-blade, constant speed
Length	24 ft 7 in (7.49 m)