Mooney M20K - Maintenance Practices

SERVICE
AND
MAINTENANCE MANUAL
M20K MOONEY
AlRCRAFT
CORPORATION
supply
gauge
O
located
adjacent
to
this
control
/O
indicates
the
pressure
of
oxygen
available in
system.
2. The
pilot’s
6
cc-pilot’s
outlets
(8)
and
passenger
outlets
(9)
should
be
g
inspected
for
damage
and
cleanliness
dun’ng servicing.
8
3.
Inspect
each individual
oxygen
mask,
and
fdtings
1.4
1(14)
for
damage.
12
4.
Oxygen
system
test
procedures.
1
A. Remove
oxygen
line
from
regulator
and
plug
the
3
line.
B.
Cap
open
regulator
port
with
a
clean
plastic
cap
to
prevent
contamination
of
I’egulator.
10
----tt-RT I
C. Conduct low
pressure
system
leak
test
using
a
70
12
10 PSI
oxygen
supply
plugged
into
one
of
the cabin
;1
3
outlets
and
a
test
gauge
2
plugged
into another outlet.
1
Apply
70
10 PSI
to
the
system;
allow 2
minutes
for
the
system
to
stabilize;
remove
oxygen
supply.
The
drop
in
pressure
after 15
OXYGEN
SYSTEM FIGURE
35 1B
(25-2000
MRU
25-TEA)
minutes
shall
not
exceed 5
PSIG.
1.The
oxygen
cylinder
should
not
be used
to
less
than
100
P.S.I.;
contamination
may
occur
to
the
D. Remove
temporary
plug
and
ensure
that the
cylinder
and valve. The valve
must
be
removed
and
cylinder
is
charged
to
capacity.
the
cylinder
cleaned
and
inspected
if this
happens.
E. Conduct
high
pressure
test
using cylinder
2.
Refill
the
cylinder
with
aviators
oxygen pressure.
Using supply
gauge
on
pilot’s
side
wall,
note
Specification
No.
MIL-O-27210,
through
the
Oxygen
cylinder
pressure.
There shall be
no
pressure
loss after
Servicing
Access
Door
(1)
(Figure
35-IA or-1B No
30
minutes.
special
fittings
are
required
for
this
servicing,
however
several
types
of
standard
oxygen
fittings
are
in
use
and
F. If
leakage
exists
apply
MIL-L-25567,
leak
test
a
compatible
fitting
for the
Scott
Recharging
Valve
(2)
solution
to
suspected
areas.
After
test,
wipe
clean and
must
be
used,
dry.
Make
necessary
repairs
and
retest.
Mooney
P/N
870025-501
oxygen
recharge
hose
5.
Oxygen
system
purging.
assembly
is
recommended.
Offensive
odors
may
be
removed from
oxygen
system
3.
The
cylinder
contains 1850
P.S.I.
at
210
C.
(700
by purging.
The
system
should also be
purged
any
F.)
when
fully charged.
Temperature
has
an
affect
on
time
the
lines
are
left
open
and
subject
to
the
correct
charging
pressure;
See Section
12-10-04
contamination.
Purging
is
accomplished by connecting
and
(I=igure
~21)
for
pressure
vs.
temperature
a
recharging
cart
into
system
and
permitting
oxygen
to
charging
pressure,
flow
through
lines and outlets until
any
offensive odors
have been carried
away.
359092
MAINTENANCE
PRACTICES
(Ref:
AC
43.13-1(8),
chap.
8,
pam.
363)
WARNING
Avoid
making sparks
and
keep
all
burning
i. The
control
cable
(3)
is
attached
to
an
actuating
cigarettes
or
fire
away
from
vicinity
of
airplane
arm
(4)
on
reducing
valve
(5).
This
cable is routed
when outlets
are
in
use.
Inspect
filler
through
van’ous
bulkheads
along
left
side
panel
to
connection
for
cleanliness before
attaching
it
control
(6)
at
pilots position.
The control is
a
push-pull
to
filler valve. Make
sure
that
your
hands,
tools,
cable
assembly
that
is
activated
by
a
control
lever
and
clothing
are
dean,
particularly
from
grease
assembly
for
SM 25-0001 thru
25-0780
and
a
rotating
and oil
stains,
for these
contaminants will
knob
assembly
for S/N 25-0781 thru 25-TEA.
The IGNITE
upon
contact
with
oxygen.
35-00-02
OLDWILLWAYNE