Cessna 177 SERIES Service Manual

g. Service and install the induction air filter.
2-21. ENGINE OIL. Check
engine lubricating oil
h. Remove dehydrator plugs and spark plugs or with the dipstick five to ten minutes after the engine
plugs
installed in spark plug holes and rotate pro-
has been stopped. The aircraft should
be in as near
peller
by hand several
revolutions to
clear corrosion-
a level
position as possible
when checking
the engine
preventive mixture
from cylinders.
oil, so that a true reading
is obtained. Engine
oil
i. Clean.
gap, and install spark
plugs. Torque
should be drained
while the engine is still
hot, and
plugs to the
value listed in Section
11.
the nose of the aircraft
should be raised slightly
for
j.
Check fuel strainer.
Remove and clean filter
more positive
draining of any sludge
which may have
screen. Check
fuel tanks and
fuel lines for moisture
collected
in the
engine oil sump.
Engine oil should
and sediment, and drain enough
fuel to eliminate. be changed every six
months, even though less than
k. Perform a thorough pre-flight inspection, then the specified hours have accumulated. Reduce these
start and warm-up engine. intervals for prolonged operations in dusty areas, in
1. Thoroughly
clean aircraft
and flight test air-
cold climates where
sludging conditions
exist, or
craft.
where short flights and
long idle periods are encoun-
tered, which cause sludging conditions. Always
2-16. SERVICING.
change oil, clean
oil screens, and clean and/or
change external filter element whenever oil on the
2-17. Servicing requirements are
shown in figure dipstick appears dirty.
When adding or changing oil,
2-4. The following paragraphs
supplement this use aviation
grade oil in accordance with figure 2-3.
figure
by adding details
not included in the figure.
NOTE
2-18.
FUEL. Fuel bays should
be filled immediately
after flight
to lessen condensation.
Fuel bay capaci-
New or newly
overhauled engines
should
ties are listed
in Section 1. The recommended
fuel
be operated on
aviation grade straight
grade to be used is
given in figure 2-3.
mineral oil until the
first oil change. If
an ashless
dispersant oil
is used in a new
2-19. FUEL DRAINS. Drains
and plugs are located or newly-overhauled
engine, high oil con-
in the fuel bays, selector
valve, reservoir
tank, lines
sumption might possibly
be experienced.
and carburetor.
The strainer drain valve
is an inte-
The anti-friction additives
in ashless dis-
gral part of
the fuel strainer assembly.
The strainer
persant oils will
retard "break-in"
of the
drain is equipped with a control which is operated piston, rings and cylinder walls. This con-
from the upper right rear engine baffle, with access dition can be avoided by the use of straight
through the oil dipstick access door. Remove
drain mineral oil. The aircraft
is delivered from
plugs and open
strainer drain at the
intervals speci-
Cessna with a Corrosion
Preventive Aircraft
fied in figure 2-3 to drain water and sediment
from Engine Oil (MIL-C-6529,
Type II, RUST
the fuel system. BAN). If oil must be added during the first
25 hours of operation, use only aviation
2-20. CARBURETOR
DRAIN PLUG
INSPECTION.
grade
straight mineral
oil (non-detergent)
In order to
prevent the possibility
of thread
sealant
conforming
to Specification
No. MIL-L-
contamination
in the carburetor
float chamber,
6082. After
the first
25 hours of opera-
cleaning
and inspection
of the carburetor
should
be
tion, drain
engine oil sump
and clean both
accomplished
at each 100-hour
inspection and any-
the oil suction
strainer and oil
pressure
time water in
the fuel is suspected.
screen. If
an optional oil
filter is installed,
a. With the
fuel valve OFF,
remove carburetor
change
filter element
at this time.
Refill
drain plug and clean
off any sealant present
on the
sump with a straight mineral
oil (non-de-
end
of the plug or in the
threads on the plug.
tergent)
and use until a total
of 50 hours
b. Inspect
drain plug
hole in
the carburetor
and re-
have accumulated
or
oil consumption
has
move any
sealant remaining
in the
hole.
stabilized,
then
change
to ashless
disper-
c. Turn fuel valve to
ON to flush float chamber and
sant oil.
drain plug chamber while probing drain plug hole to
ascertain that all residue of sealant material is dis- When changing engine oil, remove and clean oil
lodged aND
washed out
of the chamber.
Flushing
screens,
or install
a new filter
element on
aircraft
operation should
last 15 to 30 seconds.
equipped with an external oil filter. An oil quick-
d. A second flushing
should be then accomplished drain
valve may be installed. This valve provides
and
the drained fuel retained
for inspection to insure
a quick and cleaner
method of draining
the engine oil.
that no sealant
particles are
present.
This valve is
installed in the
oil drain port of
the oil
e. Install drain
plug as follows:
sump, and allows oil
to be drained by attaching
a
1. Install drain plug
in carburetor 1-1/2 to
2 hose over
the fitting end and pushing
up, causing the
turns.
oil to drain through the hose into a container.
To
2. Apply
NS-40
(RAS-4).
MIL-T-5544
(Thread
drain the
engine oil,
proceed
as follows:
Compound.
Antisieze. Graphite
Petrolatum),
or
a. Operate
engine until oil
temperature is
at nor-
equivalent
to plug threads.
mal operating temperature.
3. Tighten
and safety drain plug.
b. (With Quick-Drain
Valve.) Attach a hose
to the
f. Turn
fuel valve ON
and inspect for
evidence of
quick-drain
valve in oil sump.
Push up on
quick-drain
fuel leakage.
valve until it
locks open, and allow oil to drain through
hose
into a
container.
2-6 Change 6

Cessna 177 SERIES Specifications

General

Manufacturer	Cessna
Engine Type	Piston
Wingspan	35 ft 6 in (10.82 m)
Seating Capacity	4
Number Built	4, 295
Engine	Lycoming O-360
Horsepower	180 hp
Maximum Takeoff Weight	2, 500 lb (1, 134 kg)