New Engine Break-In And Operation - Cessna SKYLANE RG R182 Pilot Operating Handbook

SECTION 7
AIRPLANE
&
SYSTEMS DESCRIPTIONS
CESSNA
MODEL R182
The engine-driven mechanical tachometer is located on the lower right
side of the instrument panel. The instrument is calibrated in increments of
100 RPM and indicates both engine and propeller speed. An hour meter
below the center of the tachometer dial records elapsed engine time in
hours and tenths. Instrument markings include a normal operating range
(green arc) of 2100 to 2400 RPM, and a maximum (red line) of 2400 RPM.
The manifold pressure gage is located on the right side of the instru-
ment panel above the tachometer. The gage is direct reading and indicates
induction air manifold pressure in inches of mercury. It has a normal
operating range (green arc) of 15 to 23 inches of mercury.
The fuel pressure gage, located below the flight; instruments, and
slightly to the left of the control column, indicates fuel pressure to the
carburetor. Gage markings indicate that minimum pressure is 0.5 PSI (red
line), normal operating range is 0.5 to 8 PSI (green arc), and maximum
pressure is 8 PSI (red line).
An economy mixture (EGT) indicator is available for the airplane and
is located on the right side of the instrument panel. A thermocouple probe
in the left exhaust stack assembly measures exhaust gas temperature and
transmits it to the indicator. The indicator serves as a vi sual aid to the pilot
in adjusting the mixture during climb or cruise as described in Section 4.
Exhaust gas temperature varies with fuel-to-air ratic" power, and RPM.
However, the difference between the peak EGT and the EGT at the desired
mixture setting is essentially constant and this provides a useful leaning
aid. The indicator is equipped with a manually positioned reference
pointer which is especially useful for leaning during ~limb.
A carburetor air temperature gage may be installed on the left side of
the instrument panel to help detect carburetor icing conditions. The gage is
marked in 5° increments from -30°C to +30°C, and has a yellow arc between
-15°C and +5°C which indicates the temperature range most conducive to
icing in the carburetor. A placard on the lower half of the gage face reads
KEEP NEEDLE OUT OF YELLOW ARC DURING POSSIBLE CARBURE-
TOR ICING CONDITIONS.
NEW ENGINE BREAK-IN AND OPERATION
The engine underwent a run-in at the factory and is ready for the full
range of use.
It
is, however, suggested that cruising be accomplished at
65C?/o
to 75% power until a total of 50 hours has accumulated or oil
consumption has stabilized. This will ensure proper seating of the rings.
The airplane is delivered from the factory with corrosion preventive
oil in the engine. If, during the first 25 hours, oil must be added, use only
7-20