Engine Oil System; Ignition-Starter System - Cessna SKYLANE RG R182 Pilot Operating Handbook

CESSNA
MODEL R182
SECTION 7
AIRPLANE
&
SYSTEMS DESCRIPTIONS
aviation grade straight mineral oil conforming to Specification No. MIL-
L-6082.
ENGINE OIL SYSTEM
Oil for engine lubrication and propeller governor operation is supp-
lied from a sump on the bottom of the engine. The capacity of the sump is 8
quarts (one additional quart is contained in the engine oil filter). Oil is
drawn from the sump through a filter screen on the end of a pickup tube to
the engine-driven oil pump. Oil from the pump passes through an oil
pressure screen, full flow oil filter, a pressure relief valve at the rear of the
right oil gallery, and a thermostatically controlled remote oil cooler. Oil
from the remote cooler is then circulated to the left gallery and propeller
governor. The engine parts are then lubricated by oil from the galleries.
After lubricating the engine, the oil returns to the sump by gravity. The
filter adapter in the full flow oil filter is equipped with a bypass valve
which will cause lubricating oil to bypass the filter in the event the filter
becomes plugged, or the oil temperature is extremely cold.
An oil dipstick is located at the rear of the engine on the right side. and
an oil filler tube is on top of the crankcase near the front of the engine. The
dipstick and oil filler are accessible through doors on the engine cowling.
The engme should not be operated on less than five quarts of oil. To
minimIze loss of oil through the breather, fill to seven quarts for normal
flights of less than three hours. For extended flight. fill to eight quarts
i
dipstIck indication only). For engine oil grade and specifications. refer to
Section
8
of this handbook.
An oil quick-drain valve is available to replace the drain plug on the
bottom of the oil sump. and provides quicker, cleaner draining of the
engIne oil. To drain the oil with this valve installed. slip a hose over the end
of
the valve and push upward on the end of the valve untIl it snaps into the
open position. Spring clips will hold the valve open. After draining. use a
suitable tool to snap the valve into the extended (closed) position and
remove the drain hose.
IGNITION-STARTER SYSTEM
Engine ignition is provided by two engine-driven magnetos encased in
a.
single drive housing, and two spark plugs in each cylinder. The right
magneto fires the lower left and upper right spark plugs. and the left
magneto fires the lower right and upper left spark plugs. Normal opera-
tion is conducted with both magnetos due to the more complete burning of
the fuel-air mixture with dual ignition.
Ignition and starter operation is controlled by a rotary type switch
7-21