Cessna TR182 1979 Pilot Operating Handbook page 148

SECTION 7
AIRPLANE
&
SYSTEMS DESCRIPTIONS
CESSNA
MODEL TR182
is operated by oil pressure. A direct pressure oil line from the engine
delivers oil at engine operating pressure to the oil pressure gage. Gage
markings indicate that minimum idling pressure is 25 PSI (red line), the
normal operating range is 60 to 90 PSI (green arc), and maximum pressure
is 100 PSI (red line).
Oil temperature is indicated by a gage adjacent to the oil pressure
gage. The gage is operated by an electrical-resistance type temperature
sensor which receives power from the airplane electrical system. Oil
temperature limitations are the normal operating range (green arc) which
is 100°F (3S°C) to 245°F (11S°C), and the maximum (red line) which is 245°F
(118°C).
The cylinder head temperature gage, below the left fuel quantity
indicator, is operated by an electrical-resistance type temperature sensor
on the engine which receives power from the airplane electrical system.
Temperature limitations are the normal operating range (green arc) which
is 200°F (93°C) to 500°F (260°C) and the maximum (red line) which is 500°F
(260°C).
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 17to25 inchesHg, and a maximum (red line)
of 31
inches Hg.
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 30 PSI (green arc), and maximum
pressure is 30 PSI (red line).
The economy mixture (EGT) indicator is located on the right side of the
instrumen t panel. A thermocouple probe in the left exhaust collector
assembly measures exhaust gas temperature and transmits it to the
indicator. The indicator serves as a visual 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 ratio, 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
7-20
1 October 1978