Cessna 182T 2001, Pilot Operating Handbook

Page: 199 / 254

CESSNA SECTION 7
MODEL 182T AIRPLANE & SYSTEMS DESCRIPTION
The pedestal is labeled OPEN, COWL FLAPS, CLOSED. Before
starting the engine, takeoff and high power operation, the cowl flap
control should be placed in the OPEN position for maximum cooling
This is accomplished by moving the control to the right to clear a
detent, then moving the control up to the OPEN position. Anytime
the control is repositioned, it must first be moved to the right. While
in cruise flight, cowl flaps should be closed unless hot day
conditions require them to be adjusted to keep the cylinder head
temperature at approximately two-thirds of the normal operating
range (green arc). During extended let-downs, it may be necessary
to completely close the cowl flaps by pushing the cowl flap control
down to the CLOSED position.
A winterization kit is available for the airplane. Details of this kit
are presented in Section 9, Supplements.
PROPELLER
The airplane has an all-metal, three-bladed, constant-speed,
governor-regulated propeller. A setting introduced into the governor
with the propeller control establishes the propeller speed, and thus
the engine speed to be maintained. The governor then controls flow
of engine oil, boosted to high pressure by the governing pump, to or
from a piston in the propeller hub. Oil pressure acting on the piston
twists the blades toward high pitch (low RPM). When oil pressure to
the piston in the propeller hub is relieved, centrifugal force, assisted
by an internal spring, twists the blades toward low pitch (high RPM).
A control knob on the center area of the switch and control panel
is used to set the propeller and control engine RPM as desired for
various flight conditions. The knob is labeled PROPELLER, PUSH
INCR RPM. When the control knob is pushed in, blade pitch will
decrease, giving a higher RPM. When the control knob is pulled out,
the blade pitch increases, thereby decreasing RPM. The propeller
control knob is equipped with a vernier feature which allows slow or
fine RPM adjustments by rotating the knob clockwise to increase
RPM, and counterclockwise to decrease it. To make rapid or large
adjustments, depress the button on the end of the control knob and
reposition the control as desired.
Apr 30/01 7-25