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Rockwell Commander 112 - Engine Oil System

Rockwell Commander 112
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SECTION
IT
SERVICING
MAINTENANCE
MANUAL
ROCKWELL
COMMANDER
112/B/TC/TCA
AND
INSPECTION
a.
Master
battery
switch
-
OFF.
b.
Remove
access
panel
in
baggage
compartment.
•
c.
Remove
fill
port
screw
and
check
fluid
level.
Rese:l.'voir
level
should
be
maintained
to
the
bottom
•
of
the
fill
port
screw.
d.
Fill
with
hydraulic
fluid
(MIL-H- 5606).
•
e.
Install
fill
port
screw.
f.
Install
access
panel.
ENGINE OIL SYSTEM
Eight
quarts
of
engine
lubrication
oil
are
contained
in
the
oil
sump
of
the
engine.
The
oil
supply
should
be
checked
before
each
flight
and
maintained
at
the
dip-
stick
full
mark
with
seasonal
weight
and
quality
of
lubricating
oil.
Refer
to
Section
IV
for
correct
oil
grade
and
weight.
OIL
LEVEL
CHECK
AND
SERVICING.
The
oil
level
dipstick
is
a
part
of
the
filler
cap,
which
is
located
on top of
the
engine.
Access
to
the
filler
cap
is
gained
through
a
door,
located
on
the
upper
surface
of
the
engine
cowling
(see
2-14).
Maintain
oil
level
at
full
(8
quart)
mark.
Add
oil
that
is
of
the
same
quality
and
weight
of
oil
as
that
contained
in
the
sump,
and
do not
over
fill.
OIL CHANGE.
Engine
lubricating
oil
may
be
changed
at
intervals
of 100
hours
of
operation,
provided
that
the
filter
element
is
changed
every
50
hours.
Oil
that
becomes
dirty
and
contains
sludge
deposits
should
be
changed
regardless
of
time
since
last
oil
change.
To
change
oil
proceed
as
follows:
a.
Operate
engine
until
cylinder
head
temperature
is
within
green
range.
b.
Place
container
having
a
capacity
of
8
quarts
or
more
beneath
oil
drain
valve.
Attach
hose
to
drain
valve
to
prevent
oil
spillage
on
nose
gear
strut
or
other
components.
c.
Open
drain
valve
(push
up).
d. Allow
engine
oil
to
drain
completely,
then
close
drain
valve
(pUll down),
and
remove
hose.
e.
Clean
oil
suction
screen
as
outlined
in
this
section.
f.
Remove
and
replac
e
full
flow
oil
filter.
g. Add
eight
quarts
of
oil
and
check
level
with
dip-
stick
to
assure
sump
is
full.
h.
Check
drain
valve
for
leaks.
INSPECTION AND CLEANING
OF
OIL
SUCTION
SCREEN
(ELEMENT).
One
oil
suction
screen
and
one
full flow
oil
filter
element
located
within
the
oil
system
tilters
out
foreign
material
that
would
otherwise
be
carried
into
critical
moving
parts
of
the
engine.
The
oil
suction
screen
is
located
in
the
right
forward
end
of
sump
near
the
fuel
injector
and
the
full
flow
oil
filter
element
is
installed
on
the
accessory
housing.
The
metal
oil
suction
screen
must
be
inspected
and
cleaned,
while
the
oil
filter
element
must
be
removed
and
re-
placed,
at
each
50
hour-interval,
each
time
the
oil
is
changed
or
whenever
improper
oil
circulation
is
sus-
pected.
2-8
X22
4
Figure
2-5.
Hydraulic
Power
Pack
Oil
Suction
Screen
Removal
a.
Release
pressure
on
oil
system
by
draining
oil
sump.
b.
Remove
oil
suction
screen
plug
from
oil
sump
on
right
side
of
engine
and
discard
gasket.
c.
Remove
oil
screen.
Full
Flow
Oil
Filter
Removal
a.
Remove
safety
wire
from
bolt
head
at
end
of
filter
housing.
b.
Loosen
bolt
and
remove
filter
assembly
from
adapter.
c .
Remove
and
discard
copper
gasket
and
any
other
gaskets.
Inspection
and
Cleaning
Check
screen
and
filter
element
for
evidence
of
metal
particles
and
observe
the
amount
of
carbon
and
sludge
in
the
oil
screen
and
filter
element.
The
amount
of
carbon
and
sludge
build
up,
especially
in
the
suction
screen,
are
indicators
of
engine
condition.
If
the
buildup
of
this
material
increases
progressively
be-
tween
oil
changes
the
service
life
of
the
engine
will
be
increased
if
the
oil
change
time
is
reduced.
When
Change
3
Copyright Commander Owners Group 2013 All Rights Reserved
**unofficial copy**

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