Mooney M20K - Servicing Intervals; Fuel Tanks; Engine Oil

MOONEY
AIRCRAFT
CORPORATION
M20K
SERVICE
AND
MAINTENANCE
MANUAL
12-00-00
-SERVICING
NOTE
If
conditions
conducive
to
fuel
system
icing
12-00-01
-SERVICING
INTERVALS
exist
isopropyl
Alcohol
may
be
added
to
fuel
tanks
(refer
to
TCM
S.B.
M30-17).
h
is
extremely
The
specified
intervals
(refer
to
Chapter 5)
are
important
to
thoroughly
BLEND
the
isopropyl
considered
adequate
to
meet
average
requirements
alcohol
in with
the
fuel
supply
in
quantities
not
under
normal
operating
conditions.
It is
advisable,
to
exceed
3%
of
the
total
by
volume.
however,
to
shorten
service and
maintenance
intervals
when
operating
under
abnormal
environmental
2.
Defueling.
Fuel
tanks
may
be
drained
by
pumping
conditions,
such
as
extreme
temperature
ranges,
dusty
fuel
out
with
the
electn’c
fuel
boost
pump,
siphoning
fuel
atmospheric
conditions,
high
humidity
and
moisture,
through
the
filler
ports,
or
removing
tank
quick
drain
unimproved
airport
facilities,
or
unusual
operating
valves.
requirements.
WARNING
12-10-00
REPLENISHING
Allow
no
smoking
or
open
flame
within
50 feet
of
the
defueiing
area.
Ground
the aircraft
and
1210-01
FUEL
TANKS
fuel
container
during
all
defueling
operations.
Keep
fuel
tanks
at
least
half
filled
to
minim’u~e
A.
To
defuel
the
aircraft
using
fuel
boost
pump:
condensation
and
moisture
accumulation
in
tanks.
(Fuel
capacity
is
given
in
Chapter
6~
(i)
Disconnect
fuel
line
from
electric
boost
pump
outlet
at
the
fitting
forward
of the
firewall.
WARNING
(2)
Connect
to
output
fitting
a
flexible
line
that
will
Ground
the
aircraft
and
fuel
service
vehicle.
reach
fuel
receptacle.
Ground
servicing
noule
to
wing.
Permit
no
smoking
or
open
flame
within
50 feet
of
aircraft
(3)
Tum
fuel
selector
valve
to
the
tank
to
be
or
vehicle.
drained,
and
remove
filler
cap
from
fuel
filler
port.
(4)
Turn
on
fuel
boost
pump
until
tank
is
empty.
WARNING
Repeat
steps
(3)
and
(4)
to
drain
other
tank.
Each
fuel
tank
is
vented
to
the
atmosphere
at
its
outboard
ah
comer,
vent
openings
are on
(5)
To
completely
drain
fuel
system
also
drain
the lower
wing
surfalce.
Check
vents
for
wing
sumps
and
the
fuel
gascolator
valve
sump
until
obstruction
before
each
flight.
fuel
stops
running.
NOTE
12-10-02
FUEL
DRAINS
When
defueling
using
removable
tank
quick
A
fuel-drain
valve
is
located
in
the
aft
inboard comer
of
drains
it
is
only
necessary
to
remove
the
drains
each
tank
to
provide
for
drainage
of moisture
and
and
to
operate
the
gascolator
drain.
sediment.
Use the
small
plastic cup
fumished
with
the
flyaway
kit
to
drain
the
fuel
sumps.
Drain
wing
tank
12-10-03
ENGINE
OIL
sumps
and
gascolator
before
the first
flight
of
the
day
Check
engine
oil
level
after
engine
has
been
stopped
and
after
each fuel
service
to
inspect
for
water
and/or
long
enough
for
oil
to
drain
back
into
sump.
The
oil
filler
contamination.
Continue
draining
until
free
of
water
or
cap
access
door
is
located
in the
top
cowling.
Any
contamination.
lubricating
oil,
either
straight
mineral
(MIL-L-6032)
or
WARNING
compounded,
CTChn
Spec
MHS-24(
are
acceptable
for
use
after
break-in
pen’od.
Approved
products
and
After
servicing
the
aircraft
with
fuel,
wait
at
least
five
minutes
for
moisture
and
sediment
to
engine
oil
viscosity
requirements
are
shown
in
Chapter
settle
before
draining
and
checking
both
the
5-20-07.
fuel
tank
sumps
and the
fuel
selector
valve
CAUTION
drain.
The
terms
"detergenr’,
%ddaive",
and
"compounded"
used in
this
manual
are
i.
Fuel
Selector
Drain.
The
fuel
gascolator
is
at
the
intended
to
refer
to
a
class
of
aviation
engine
lowest
point
in the
fuel
system
and
has
a
drain
valve
lubricating
oils
to
which
certain
substances
operated
by
a
control
on
the
floor
in
the
cabin.
To
drain
have
been
added
to
improve
them
for
aircraft
the
fuel
selector
valve:
use.
These
terms
do
not
refer
to
such
materials
A.
Switch
fuel
selector
valve
handle
to
L
and
pull
commonly
known as
"top
cylinder
lubricant",
fuel
drain
valve
control
n’ng
for 10
seconds.
"dopes"
and
"carbon
remover"
which
are
sometimes
added
to
fuel
or
oil. These
products
B.
Switch
fuel
selector
valve
handle
to
R
and
pull
fuel
drain
valve
control
n’ng
for 10
seconds.
may
damage
the
engine
and
therefore,
should
not
be
used.
Under
no
circumstances
should
C.
After
draining,
be
sure
fuel
drain
valve
control
is
automotive
oil
be
used,
since
such
oils
could
retumed
to
the
closed
position
and
the
valve
is
not
cause
engine
damage.
leaking
outside
the
aircraff.
Oil
Recommendations
for
New-Engine
or
Newly
WARNING
Overhauled
Engine
Break-IN.
New
or
newly
overhauled
During
cold
weather
operation,
frequently
engines
should
be
operated
on
aviation
grade
straight
check
fuel
selector
drain
for
ice
formation
by
mineral
oil
dun’ng
the
first
25
hours
of
operation
or
until
repeating
procedures
1.,
A,
B
and C
above.
oil
consumption
has
stabilized.
12-00-00
OLDWILLWAYNE