Mooney M20M - Page 61

MOONEY AIRCRAFT
CORPORATION
M20M
SERVICE
AND MAINTENANCE MANUAL
NOTE
Use
only hydraulic
fluid
(red),
per
specification
If
filter shows
an
accumulation
of
carbon,
soot,
MIL-H-5606.
Do
not
fill
reservoir above
two
inches
or
oil,
continue
with
cleaning
steps
3
through
5.
below filler
port.
3.
Soak filter
in
nonsudsing detergent
for
15
minutes;
12-20-05
HYDRAULIC BRAKES
(Bleeding)
then
agitate
filter
back
and
forth for
two
to
five
minutes
to
free
filter
element
of
deposits.
CAUTION
4.
Rinse filter
element with
a
stream
of
clean
water
FIuid
in
the wheel
cylinders
may
be under
high
until
rinse
water
is
clean,
pressure
due
to
expansion.
Therefore,
be
sure
parking
brakes
are
released
prior
to
beginning
5.
Dry
filter
thoroughly.
Do
not
use
light
or
air above
hydraulic
system
servicing.
180
deg.
F. for filter
drying.
6.
Check alternate
air door
for
proper
operation
and
For best
results,
use
a
diaphram
type
hydraulic
sealing,
pressure
service unit
(pressure pot)
to
back bleed
the
system
through
the wheel
cylinder
bleeder valves.
7.
Reinstall
filter
in
aircraft
making
sure
of
proper
sealing
and
security.
SINGLE BRAKE SYSTEM
(PILOTS
SIDE
ONLY)
1.
Remove
hydraulic
Ruid
reservoir filler
plug,
and
12-20-02
BATTERIES
install
a
suitable
fitting
for
attaching
a
flexible
drain line.
Service
batteries
with
distilled
water to
maintain
2.
Immerse
open
end
of
drain line
into
a
hydraulic
electrolyte
above
plates.
After
adding
water
in
freezing
Ruid
container
or
catch container.
weather,
charge battery
long
enough
to
mix
electrolyte
and
water.
Keep
battery electrolyte
above
a
specific
3´•
Attach
pressurized hydraulic
Ruid service unit
to
gravity
of
1.225 to
avoid
freezing.
wheel
cylinder
bleeder valve and
open
valve.
Hydraulic
To service
the
battery(ies):
service
unit
should be free of
air
prior
to
servicing
aircraft
system.
1.
Remove
battery
caps.
Check
electrolyte
and
service
battery
as
required.
4.
Feed
fluid
from
service
unit
into
brake
system.
Check
for
air
bubbles
at
end
of
drain line
immersed
in
fluid.
CAUTION
Battery
gases
may
be
explosive.
5.
When Ruid
is
Rowing,
slowly
depress
pilot’s
brake
pedal
by
hand and
slowly
release.
Repeat
three
(3)
to
2.
Inspect battery
mounting
area
for
corrosion
and
four
(4)
times.
spilled
electrolyte.
To
clean
cables,
terminals,
6.
Allow
fluid
to
flow
until clear of
air
bubbles.
mounting
area
and
battery
case,
use a
solution of
bicarbonate of soda
and clean
water
to
neutralize
If
shume
valve
is
installed
in
single
brake
system
corrosion
and
spilled
electrolyte.
7.
Loosen
pluglcap
on
shuttle valve
(port
is
plugged
CAUTION
if
no
cc-pilot’s
brake
system
is
installed).
Allow
air
When
cleaning,
do
not
allow
bicarbonate of
bubbles
to
purge
from back side of shuttle
valve;
soda
to enter
battery
cells
permanent
damage
indicated
by
clear
Ruid
Rowing
from shuttle valve into
will
result
if
soda
mixes with
electrolyte,
catch
container.
3.
Rinse
battery
with clean
water,
and
wipe
clean
8´•
Close
wheel
cylinder
bleeder valve
and
remove
with
a
dry
cloth.
service
line.
4.
To retard
corrosion,
coat
terminals with
petroleum
NOTE
jelly
after
cleaning
and
tightening
them.
Brake
pedal
may
need
to
be
pulled
back
in
5.
Inspect
battery
vent
lines
for
obstruction,
line
order for fluid
to
bleed
back
into
reservoir.
kinks,
etc.
9.
To
bleed
opposite
brake,
(single
brake
system
12-20-03
TIRES
AND
WHEELS
only)
repeat steps
3
through
8.
Keep
the tires
at
recommended
air
pressure.
(Refer
to
IF DUAL BRAKES
AND
SHUTTLE
VALVE ARE
CHAPTER
6-00-01.
INSTALLED
-(See
steps
1
8
2,
Single
Brake
System
1.
Inspect
tires
for
wear,
cuts,
and bruises.
1.
While
pressurized hydraulic
fluid
service
unit
is still
attached
to
either
wheel
cylinder
bleeder
valve.
2.
Inspect
valve
stems
for
evidence
of
tire
slippage
or
pulling.
2.
Loosen
cc-pilot’s
brake
line
at
shuttle valve.
Provide
another
catch
container.
3.
Inspect
wheels for
damage.
3.
Resbict outflow
fnrm
reservoir
dtai~ hibe
to
catch
4.
Inspect
wheel
bearings
for
condition and
container.
lubrication.
4.
Allow
fitting
to
remain
loose until
fluid
is clear
of
air
12-20-04
BRAKE RESERVOIR
bubbles
as
it drains from shuttle valve
fitting
into
catch
Frequently
inspect
brake
reservoir
for
proper
Ruid level.
Co"tainer.
See~CHAPTER
12-20-05
for location.
See CHAPTER
5.
When
clear,
tighten
cc-pilot
line
fitting
and
remove
5-20-07
for
proper
fluid.
restriction
from
reservoir
out
flow
tube.
CAUTION
6.
Stroke
cc-pilot’s
brake
pedal
several
times
and
Do
not
fill reservoir
while
parking
brake is
set.
allow
any
purged
air
to
exit
through
reservoir.
4-99
12-20-02
OLDWILLWAYNE