Cooling System; Propeller; Fuel System - Cessna SKYHAWK 1976 Pilot Operating Handbook

CESSNA SECTION 7
MODEL 172M
AIRPLANE
&
SYSTEMS DESCRIPTIONS
COOLING SYSTEM
Ram air for engine
COOling
enters through two intake openings in the
front of the engine cowling. The cooling air is directed around the cylin­
ders and other areas of the engine by baffling, and is then exhausted
through an opening at the bottom aft edge of the cowling. No manual cool­
ing system control is provided.
A winterization kit is available and consists
of
two baffles which attach
to the air intakes in the cowling nose cap, a restrictive cover plate for the
oil cooler air inlet in the right rear vertical engine baffle, and insulation
for the crankcase breather line. This equipment should be installed for
operations in temperatures consistently below -7°C (20°F). Once install­
ed, the crankcase breather insulation is approved for permanent use in
both hot and cold weather.
PROPELLER
The airplane is equipped with a two-bladed, fixed-pitch, one-piece
forged aluminum alloy propeller which is anodized to retard corrosion.
The propeller is 75 inches in diameter.
FUEL SYSTEM
The airplane may be equipped with either a standard fuel system or a
long range system (see figure 7-6). Both systems consist of two vented
fuel tanks (one in each wing), a four-position selector valve, fuel strainer,
manual primer, and carburetor. Refer to figure 7-5 for fuel quantity data
for both systems.
Fuel flows by gravity from the two wing tanks to a four-position selec-
FUEL QUANTITY DATA (U. S. GALLONS)
TANKS
TOTAL
USABLE FUEL
ALL FLIGHT
CONDITIONS
TOTAL
UNUSABLE
FUEL
TOTAL
FUEl
VOLUME
STANDARD
(21 Gal. Each)
38 4
42
LONG RANGE
(26 Gal. Each)
48 4 52
Figure 7-5. Fuel Quantity Data
7-21