Cessna 182 1978 - Cold;Hot Weather; Dusty Areas; Ground Service Receptacle; Seacoast and Humid Areas

MODEL 182
& T182
SERIES
SERVICE MANUAL
11A-78.
REMOVAL
AND INSTALLATION
(See
sump.
If the free
air temperature
is below
minus
figure
11A-8.)
20°C (-20 F), the engine compartment should
be pre-
a. Remove
engine cowling
as required.
heated by a
ground heater.
Pre-heating the
engine
b. Remove
waste gate to tailpipe clamp
at (14).
compartment is accomplished
by inducing heated
air
c. Loosen
clamp (12)
at turbine exhaust
outlet and
up through
the cowl flap openings;
thus heating
both
work tailpipe
(13) from turbine
outlet, and cover
the oil and the cylinders.
After the engine
compart-
to prevent entrance of foreign
material. ment has been
preheated, inspect all engine drain and
d.
Loosen clamps (8) and
remove air inlet, elbow
vent lines for
presence of ice. After
this procedure
(7) and duct (6) from
turbocharger compressor
sec- has been
complied with, pull propeller
through sev-
tion
(10). and
cover both
parts to prevent
damage.
eral revolutions
by hand
before attempting
to
start
e. Disconnect
oil
pressure (1) and
scavenge lines
the
engine.
(2) from turbocharger
(10), plug and cap all
openings.
Remove
all clamps
and ties as necessary.
f. Remove four bolts (19) attaching
turbine to LH
exhaust manifold (16).
g. Carefully remove turbocharger from engine com-
partment. at
aft LH side near
the firewall.
Due to the
desludging effect
of the diluted
oil,
h. Reverse
the preceding
steps for reinstallation.
engine
operation should
be observed
closely
Always
use a new gasket
between turbocharger
and
during
the initial warm-up
of the engine.
En-
exhaust manifold.
gines that
have considerable
amount of
oper-
ational hours accumulated
since their
last
NOTE
dilution
period
may be seriously
affected
by
the
dilution process.
This will
be caused
by
Install
all hardware
in exact removal
sequence.
the
diluted oil dislodging
sludge
and carbon
deposits
within
the engine.
This
residue will
i. Refer
to paragraph
11A-67 for waste
gate control
collect
in the oil sump
and possibly
clog the
linkage installation
and adjustment.
screened inlet to the oil
sump. Small deposits
may
actually enter the
oil sump and be trapped
by the main oil filter screen. Partial or
complete
loss of engine
lubrication may result
from either
condition. If
these conditions are
11A-79. ECONOMY
MIXTURE INDICATOR
(EGT).
anticipated after oil dilution,
the engine should
(Refer to Section
15.)
be run for
several minutes
at normal operating
temperatures
and
then stopped
and inspected
11A-80. EXTREME WEATHER
MAINTENANCE. for evidence of
sludge and carbon deposits in
the
oil sump
and oil
filter screen.
Future
11A-81.
COLD
WEATHER.
Cold weather
starting
occurrence
of this
condition
can
be prevented
is made
easier by the use of
the engine primer sys-
by diluting
the oil prior to each
engine oil
tem and
installation of a ground
service receptacle.
change. This
will also prevent the
accumu-
Operating the primer
forces fuel to the engine. With lation
of the sludge and carbon deposits.
an external power receptacle installed, an external
power source
may be connected to
assist in cold
11A-82. HOT WEATHER.
Refer to Pilot's
Oper-
weather starting. Refer
to Section 16 for use of the
ating Handbook.
external
power receptacle.
11A-83.
SEACOAST
AND
HUMID
AREAS.
In salt
The following
may also be used to assist engine start-
water areas special care should be taken to
ing in extreme cold weather. After the last flight of the engine accessories and airframe clean to pre-
the day. drain
the engine oil into a clean container so vent
oxidation. In humid areas fuel and oil should
the oil
can be preheated. Cover the engine to prevent
be checked frequently and condensation
drained to
ice or snow from collecting
inside the cowling. When
prevent corrosion.
preparing the
aircraft
for flight or
engine runup
after
these conditions have
been followed, preheat
the drain- 11A-84.
DUSTY AREAS. Dust induced
into the intake
ed engine oil.
cause of early engine
wear. When operating
in high
as outlined
in Section 2. Also
change engine oil and
Do not heat
the oil above
121°C (250
F). or
lubricate airframe
items
more often
than specified.
a flash fire may result. Before pulling the
propeller through. ascertain that
the magneto 11A-85. GROUND SERVICE
RECEPTACLE. Refer
switch is in the
OFF position. or that primary
to Section 16.
lead is grounded to prevent accidental firing
of
the
engine.
After preheating the
engine oil. gasoline may
be mix-
ed
with the heated oil in
a ratio of 1 part gasoline
to
12 parts
engine oil before pouring
into the engine oil
11A-25/(11A-26
blank)