CESSNA
MODEL 172R (180 HP)
ENGINE
SECTION 7
AIRPLANE & SYSTEMS DESCRIPTION
The airplane is powered by a horizontally opposed, four cylinder,
overhead valve, air cooled, fuel injected engine with a wet sump
lubrication system. The engine is a Lycoming Model IO-360-L2A
and is rated at 180 horsepower at 2700 RPM. Major accessories
include a starter and belt driven alternator mounted on the front of
the engine, and dual magnetos, dual vacuum pumps, and a full flow
oil filter mounted on the rear of the engine accessory case.
ENGINE CONTROLS
Engine power is controlled by a throttle located on the switch and
control panel above the control pedestal. The throttle is open in the
full forward position and closed in the full aft position. A friction lock,
which is a round knurled knob, is located at the base of the throttle
and is operated by rotating the lock clockwise to increase friction or
counterclockwise to decrease it.
The mixture control, mounted adjacent to the throttle control, is a
red knob with raised points around the circumference and is
equipped with a lock button in the end of the knob. The rich position
is full forward, and full aft is the idle cutoff position. For small
adjustments, the control may be moved forward by rotating the knob
clockwise, and aft by rotating the knob counterclockwise. For rapid
or large adjustments, the knob may be moved forward or aft by
depressing the lock button in the end of the control, and then
positioning the control as desired.
ENGINE INSTRUMENTS
Engine operation is monitored by the following instruments: oil
pressure/oil temperature indicator, tachometer and exhaust
gasl
temperature (EGT) indicator. In addition, the annunciator contains a
red OIL PRESS warning light which indicates low oil pressure.
The oil pressure/oil temperature indicator unit is located on the
l
lower left side of the instrument panel. Markings for the pressure
indicator indicate a minimum idling pressure of 20 PSI (red line), a
normal operating range of 50 to 90 PSI (green arc), and a
maximum pressure of 115 PSI (red line).
Oct 4/01
7-19
Summary of Contents for 172R180HP
Page 4: ...I I I _ I l...
Page 6: ......
Page 15: ...t GENERAL...
Page 16: ...1 J a w z w c...
Page 43: ...2 r 3 0 z...
Page 44: ...2 v z 0 i e i...
Page 46: ...l...
Page 60: ...i c t...
Page 61: ......
Page 62: ......
Page 85: ...4 oz 0 m J J 03 C i...
Page 86: ...I 4 w a 5 a w ou zO a a...
Page 90: ......
Page 128: ......
Page 129: ...ll PERFORMANCE...
Page 130: ...5 w u z a 0 a Ao...
Page 132: ......
Page 154: ......
Page 155: ...6...
Page 156: ...J WEIGHT BALANCE n EQUIPMENT LIST J...
Page 158: ......
Page 187: ...AIRPLANE SYSTEMS DESCRIPTIONS...
Page 188: ...J AIRLANE SYSTEMS DESCRIPTIONS...
Page 192: ......
Page 239: ...co HANDLING _ SERVICE MAINTtNANCE...
Page 240: ...fa...
Page 265: ...9 en C r m 3 m z en...
Page 266: ...9 z w E w _ Q Q...
Page 268: ......
Page 270: ...I...
Page 288: ......
Page 298: ......
Page 396: ......