Mooney M20R - Engine Oil; Fuel Drains; Fuel Tanks; Servicing Intervals

MOONEY
AIRCRAFT
CORPORATION
M20R
SERVICE
AND
MAINTENANCE
MANUAL
12-00-00
SERVICING
C.
After
draining,
be
sure
fuel drain
valve
control
is
returned to
the
closed
position
and
the
valve is
not
12-00-01
-SERVICING
INTERVALS
leaking
outside
aircraft.
The
specified
intervals
(refer
to
Chapter
5)
are
con-
sidered
adequate
to
meet
average
requirements
under
WARNING
normal
operating
conditions.
It
is
advisable,
however,
During
cold
weather
operation,
frequently
check
to
shorten
service
and
maintenance
intervals
when
fuel
gascolator
drain
for
ice
formation
by
repeating
operating
under
abnormal
environmental
conditions,
procedures
1., A,
B
and
C
above.
such
as
extreme
temperature
ranges,
dusty
atmos-
pheric
conditions,
high
humidity
and
moisture,
NOTE
unimproved
airport
facilities,
or
unusual
operating
re-
If
conditions
conducive
to
fuel
system
icing
exist,
Isopropyl
Alcohol
may
be
added
to
fuel
tanks.
It is
quirements.
extremely
important
to
thoroughly
BLEND
the
12-10-00
REPLENISHING
isopropyl
alcohol
in
with the
fuel
supply
in
FUEL
TANKS
quantities
not
to
exceed
3%
of
the
total,
by
volume.
Keep
fuel
tanks
at
least
half
filled to
minimize
conden-
2.
Defueling.
Fuel
tanks
may
be
drained
by
one
of
sation
and
moisture
accumulation
in
tanks.
(Fuel
several
methods:
pumping
fuel
out
with
electric
boost
capacity
is
given
in
Chapter
6.)
pump,
siphoning
fuel
through
the
filler
ports,
or
remov-
ing
tank
quick
drain
valves.
WARNING
Ground
aircraft
and
fuel
service
vehicle
during
WARNING
refueling.
Permit
no
smoking
or
open
flame
within
Allow
no
smoking
or
open
flame
within
50
feet
of
50
feet
of
aircraft
or
vehicle.
the
defueling
area.
Ground
aircraft
and fuel
container
during
all
defueling
operations.
WARNING
Each
fuel
tank
is
vented
to
the
atmosphere
at
its
A.
To
defues
aircraft
using
electric
boost
pump:
outboard
aft
corner
vent
openings
are on
the
lower
wing
surface.
~heck
vents
for
obstructions
(1)
Disconnect
fuel
line from
electric
boost
before
each
flight,
pump
outlet at
the
fitting
forward of
the
firewall.
(2)
Connect
a
flexible
line
to
output
fitting
12-10-02
FUEL
DRAINS
that
will reach
fuel
receptacle.
A
fuel-drain
valve
is
located
in
the
aft
inboard
corner
of
(3)
Turn
fuel
selector
valve
to
tank
to
be
each
tank to
provide
for
drainage
of
moisture
and sedi-
drained,
and
remove
filler
cap
from
fuel
filler
port.
ment.
Use
the
small
plastic
cup
furnished
with
the
(4)
Turn
boost
pump
ON until
tank is
empty.
flyaway
kit
to
drain
fuel
sumps.
Drain
wing
tank
sumps
Repeat steps
(3)
and
(4)
to drain
other
tank.
and
gascolator
before!
first
flight
of
the
day
and after
each-fuel
service
to
inspect
for
water
and/or
con-
(5)
To
completely
drain
fuel
system
also
tamination.
Continue
draining
until
free
of
water
or
con-
drain
wing
tank
sumps
and
fuel
gascorator
valve
sump
tarnination.
until fuel
stops
running.
WARNING
NOTE
After
servicing
aircraft
with
fuel,
wait
at
least
five
When
defueling
using
removable
tank
quick
minutes
for
moisture
and
sediment
to
settle
before
drains,
it
is
only
necessary
to
remove
the
drains
draining
and
checking
both,
the
fuel
tank
sumps
and
to
operate
the
gascolator
drain.
and
the
fuel
selector
valve
drain.
12-10-03
ENGINE
OiL
1.
i=uel
Gascda~or
Drain.
The
fuel
gascolator
is
at
the
lowest
point
in
the
fuel
s\-,stem
and
has
a
drain
Check
engine
oil
level after
engine
has
been
stopped
valve
operated
by
a
control
or:
the
fi~or
in the
cabin.
long
enough
for
oil
to
drain
back
into
sump.
The oil
To
drain
the
fuel
gascolator:
filler
cap
access
door
is
located
in
the
top
cowling.
Any
A.
Switch
fuel
selector
valve
handle to
L
and
pull
lubricating
oils
approved
by
Teledyne
Continental
fuel
drain
valve
control
ring
Bor
da
seconds.
Motors
(MHS-24)
are
acceptable
for
use
after
break-in
B.
Switch
fuel
selector
valve
handle to
R
and
pull
period.
Approved
products
and
engine
oil
viscosity
re-
fuel
drain
valve
control
ring
for
10
seconds,
quirements
are
shown
in
Chapter
5-20-07.
12-00-00
Island Enterprises