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CESSNA
SECTION
7
MODEL 152
AIRPLANE & SYSTEMS
DESCRIPTIONS
1 July 1978
7-18
should be operated on both, magnetos (BOTH position) except for magneto checks. The R
and L positions are for checking purposes and emergency use only. When the switch is
rotated to the spring-loaded START position, (with the master switch in the ON position), the
starter contactor is energized and the starter will crank the engine. When the switch is
released, it will automatically return to the BOTH position.
AIR INDUCTION SYSTEM
The engine air induction system receives ram air through an intake in the lower portion of the
engine cowling. The intake is covered by an air filter which removes dust and other foreign
matter from the induction air. Airflow passing through the filter enters an airbox. After passing
through the airbox, induction air enters the inlet in the carburetor which is under the engine,
and is then ducted to the engine cylinders through intake manifold tubes. In the event
carburetor ice is encountered or the intake filter becomes blocked, alternate heated air can be
obtained from the muffler shroud through a duct to a valve, in the airbox, operated by the
carburetor heat control on the instrument panel. Heated air from the muffler shroud is obtained
from an unfiltered outside source. Use of full carburetor heat at full throttle will result in a loss
of approximately 150 to 200 RPM.
EXHAUST SYSTEM
Exhaust gas from each cylinder passes through riser assemblies to a muffler and tailpipe on
the underside of the engine. The muffler is constructed with a shroud around the outside
which forms a heating chamber for carburetor heat and cabin heater air.
CARBURETOR AND PRIMING SYSTEM
The engine is equipped with an up-draft, float-type, fixed jet carburetor mounted on the bottom
of the engine. The carburetor has an idle cut-off mechanism and a manual mixture control.
Fuel is delivered to the carburetor by gravity flow from the fuel system. In the carburetor, fuel
is atomized, proportionally mixed with intake air, and delivered to the cylinders through intake
manifold tubes. The proportion of atomized fuel to air is controlled, within limits, by the mixture
control on the instrument panel.
For starting, the engine is equipped with a manual priming system. The primer is actually a
small pump which draws fuel from the fuel strainer when the plunger is pulled out, and injects it
into the cylinder intake ports when the plunger is pushed back in. The plunger knob, on the
instrument panel, is equipped with a lock and, after being pushed full in, must be rotated either
left or right until the knob cannot be pulled out.
Содержание 152 1979
Страница 8: ...CESSNA GENERAL MODEL 152 1 July 1978 1 2 Figure 1 1 Three View ...
Страница 50: ...CESSNA SECTION 4 MODEL 152 NORMAL PROCEDURES 1 July 1978 4 12 ...
Страница 62: ...CESSNA SECTION 5 MODEL 152 PERFORMANCE 1 July 1978 5 2 ...
Страница 82: ...CESSNA SECTION 6 MODEL 152 WEIGHT BALANCE EQUIPMENT LIST 1 July 1978 6 2 ...
Страница 87: ...CESSNA SECTION 6 MODEL 152 WEIGHT BALANCE EQUIPMENT LIST 1 July 1978 6 7 ...
Страница 88: ...CESSNA SECTION 6 MODEL 152 WEIGHT BALANCE EQUIPMENT LIST 1 July 1978 6 8 ...
Страница 92: ...CESSNA SECTION 6 MODEL 152 WEIGHT BALANCE EQUIPMENT LIST 1 July 1978 6 12 Figure 6 9 Center of Gravity Limits ...
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Страница 137: ...CESSNA SECTION 8 MODEL 152 HANDLING SERVICE MAINTENANCE 1 July 1978 8 2 ...