Lycomin 0-360 - Lubrication System; Oil Grades and Limitations; Oil Suction and Oil Pressure Screens

TEXTRON
LYCOMING
OPERATOR'S
MANUAL
SECTION
5
0-360 and
ASSOCIATED
MODELS
(3)
Set throttle
stop screw
so
that the
engine
idles
at the
airframe
manufacturer's
recommended
idling RPM.
If the
RPM changes
ap-
preciably
after
making
idle mixture
adjustment
during
the succeeding
steps,
readjust
the
idle speed
to
the desired
RPM.
(4) When
the
idling speed
has
been
stabilized,
move
the cockpit
mix-
ture
control
lever with
a smooth,
steady
pull toward
the "Idle-Cut-
Off"
position
and observe
the tachometer
for any
change during
the
leaning
process.
Caution
must be
exercised
to return
the mixture
control to
the "Full Rich"
position before
the RPM
can drop to
a
point
where
the
engine
cuts out.
An
increase
of more
than
50 RPM
while
"leaning
out" indicates
an excessively
rich
idle mixture.
An
immediate
decrease
in RPM
(if not
preceded
by a momentary
in-
crease)
indicates
the
idle
mixture
is too
lean.
If the
above
indicates
that
the
idle adjustment
is too
rich
or too
lean,
turn
the idle
mixture
adjustment
in the
direction
required
for
correction,
and
check this
new position
by
repeating
the above
pro-
cedure.
Make
additional
adjustments
as
necessary
until a
check
results in
a momentary
pick-up
of approximately
50 RPM.
Each time
the
adjustment
is
changed,
the
engine
should
be run
up to 2000
RPM
to clear
the
engine before
proceeding
with
the RPM
check.
Make
final
adjustment
of the
idle speed
adjustment
to obtain
the
desired
idling RPM
with
closed throttle.
The
above
method
aims at a
set-
ting
that
will obtain
maximum
RPM with
minimum
manifold
pressure.
In case
the
setting
does
not remain
stable,
check
the
idle
linkage;
any
looseness
in this
linkage would
cause
erratic
idling. In
all cases,
allowance
should
be made
for the
effect of
weather
conditions
and
filed altitude
upon idling
adjustment.
3. LUBRICATION
SYSTEM.
a. Oil
Grades
and Limitations
- Service
the
engine in
accordance
with
the recommended
grade
oil as
specified
in
Section
3, item
8.
b. Oil
Suction
and
Oil Pressure
Screens
- At each
100 hour
inspection
remove
suction
screen. Inspect
for
metal particles;
clean
and reinstall.
Inspect
and clean
pressure
screen
every 25
hours.
c. Oil Pressure
Relief
Valve -
Subject engines
may
be equipped
with either
an adjustable
or non-adjustable
oil pressure
relief
valve. A
brief descrip-
ion
of both types
follows.
5-6