Cessna T188C - Page 184

WARNING the engine. This residue will collect in the
oil
sump
and
possibly
clog
the
screened
Do
not heat
the
oil above
121°C
(250"F).
A
inlet to
the oil
sump.
Small
deposits
may
flash
fire
may
result.
Before
pulling
the
actually
enter
the oil
pump
and
be
trapped
propeller
through,
ascertain
that
the
mag-
by
the main
oil
filter
screen.
Partial
or
neto
toggle
switches
are
in the
OFF
position
complete
loss
of engine
lubrication
may
to prevent
accidental
firing
of the
engine.
result
from
either
condition.
If these
con-
ditions
are anticipated
after
oil dilution,
After
preheating
the
engine
oil,
gasoline
may
be
the engine
should
be run
for
several
min-
mixed
with
the heated
oil
in a ratio
of
1 part
gasoline
utes at
normal
operating
temperatures
and
to 12 parts
engine
oil before
pouring
into the engine
then stopped
and
inspected
for evidence
of
oil
sump.
If the free
air temperature
is below minus
sludge and
carbon
deposits
in the oil
sump
29'C
(-20F). the
engine compartment
should
be pre- and
oil filter screen.
Future
occurrence
heated
by a ground
heater.
Pre-heating
the engine
of this
condition
can be prevented
by diluting
compartment
is
accomplished
by inducing
heated
air
the
oil prior
to each engine
oil change.
This
up
through
opening
in lower
cowl
assembly;
thus heat-
will also
prevent
the
accumulation
of the
ing both
the
oil and cylinders.
After
the engine
com-
sludge
and
carbon
deposits.
partment
has
been
preheated,
inspect
all
engine
drain
and
vent
lines for
presence
of
ice. After
this
proce-
11-83.
SEACOAST
AND
HUMID
AREAS.
In salt
jure
has been
complied
with, pull
propeller
through
water
areas special
care
should be
taken to
keep
several
revolutions
by hand
before
attempting
to start
the
engine,
accessories
and airframe
clean to
pre-
the
engine.
vent
oxidation.
In
humid
areas,
fuel
and oil
should
be checked
frequently
and
drained
of
condensation
CAUTION
to prevent
corrosion.
Due to
the desludging
effect of
the diluted
11-84.
DUSTY
AREAS.
Dust
induced
into
the intake
oil,
engine
operation
should
be
observed
system
of the
engine
is
probably
the
greatest
single
closely
during
the
initial
warm-up
of the
cause
of
early engine
wear.
When
operating
in high
engine.
Engines
that have
considerable
dust conditions,
service
the
induction
air filter
daily
amount
of
operational
hours
accumulated
as
outlined
in-Section
2.
Also
change
engine
oil and
since
their last
dilution
period
may
be
lubricate
airframe
items
more often
than
specified.
seriously
affected
by the
dilution
process.
This will
be caused
by the
diluted oil
dis-
11-85.
GROUND
SERVICE
RECEPTACLE.
Refer to
lodging sludge
and carbon
deposits within
Section 16.
11-28 Revision 1