CESSNA
SECTION 7
MODEL 172S NAV III
AIRPLANE AND SYSTEM DESCRIPTION
KAP 140 AUTOPILOT
U.S.
ENGINE
(Continued)
ENGINE INSTRUMENTS
(Continued)
OIL PRESSURE
(Continued)
In cold weather, the oil pressure will initially be high (close to the upper
red band when the engine is started). As the engine and oil warm up,
the oil pressure will come down into the green band range.
The oil pressure transducer, connected to the engine forward oil
pressure port, provides a signal to the engine display that is processed
and shown as oil pressure. A separate low oil pressure switch causes
an OIL PRESSURE annunciation on the PFD when oil pressure is 0 to
20 PSI. A red X through the oil pressure indicator means that the
indicating system is inoperative.
OIL TEMPERATURE
Engine oil temperature is shown on the ENGINE page by the OIL
TEMP horizontal indicator. The indicator range is from 75°F to 250°F
with a green band (normal operating range) from 100°F to 245°F and a
red band from 245°F to 250°F. A white pointer indicates actual oil
temperature. Oil temperature is displayed numerically on the SYSTEM
page.
When oil temperature is in the red band, 245°F to 250°F, the pointer
and OIL TEMP turn red and flash to show oil temperature is higher than
the limit. If oil temperature becomes hotter than 245°F while on the
LEAN or SYSTEM page, the display will default to the ENGINE page.
The oil temperature sensor is installed in the engine oil filter adapter
and provides a signal to the engine display that is processed and
shown as oil temperature. A red X through the indicator shows that the
indicating system is inoperative.
(Continued Next Page)
172SPHAUS-05
7-33
For
Training
Purposes
Only
Содержание Cessna 172S NAV III Skyhawk SP
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