Mooney M20M - Page 165

MOONEY
AIRCRAFT CORPORATION
M20M
SERVICE AND
MAINTENANCE MANUAL
D.
Disconnect
hydraulic cylinder
from bracket
and
(4)
Remove
snap
ring
(5)
from
end
of
camshaft
remove
cylinder.
assembly
(6).
E. To
disassemble
master
cylinder:
(5)
Carefully
remove
camshaft
assembly
(6)
from
(Parker-Hannifin)
(See
Figure
32-19,
S/N
27-0108
thru
housing.
27-TEA).
(6)
Inspect
all
components
for
damage,
nicks,
(1)
Unscrew
and
remove
rod end clevis
(17),
nut
grooves,
etc.
(16)
and
washers
(14
8
15)
from
piston
rod
(13).
(7)
Clean
all
parts
with
cleaning
solvent
(Federal
(2)
Remove
snap
ring
(11)
from
cylinder housing
Specification
No.
PS-661).
assembly;
lift
out
complete
piston
rod
assembly,
(items
(8) Replace
all
o-rings
(9).
2
thru
13).
Spring
(12)
can
be removed
at
this time.
(9)
Reassemble
brake
valve
in
reverse
sequence
(3)
Remove
snap
ring
(2)
from
end
of
piston
rod
of
disassembly.
assembly.
(10)
Connect
valve
assembly
to
the
hydraulic
(4)
Remove
bushing
(3)
and
spring
(4)
from
end
lines.
of
piston
rod.
(11)
Bleed
system;
service
hydraulic
reservoir
(5)
Remove
piston
assembly (5)
and
o-ring (7)
with
hydraulic
fluid
as
described
in
SECTION 12-20-05.
from
piston
assembly
and
o-ring
(6)
from
piston
rod
5.
Shuttle
Valve
Maintenance
shaft.
A. No
maintenance
authorized. Remove
and
(6)
Remove
end
cap
(8)
and
o-rings
(9
[ID]
and
7
replace
shuttle
valve
assembly.
[ODI)
from
end
cap
assembly.
(7)
Clean
all
parts
with
cleaning
solvent
(Federal
Specification
No.
PS-661).
(8)
Inspect cylinder
for
cracks,
scoring,
or
grooves
in
bore.
(9)
Inspect
piston
(5)
for
damage;
check
for
nicks
and scratches
(10)
Inspect
end
cap
(8)
for
damage.
(11)
Inspect push
rod
for
scoring,
grooves,
nicks
and scratches.
(12)
Inspect spring
(4)
for free
height
.500 in.
+/-.030.
(13) Replace
all
faulty
parts
and
all
o-rings.
(14)
Reassemble
in
reverse
sequence
of
disassembly.
immerse
all
parts
in
hydraulic
brake
fluid
prior
to
reassembly.
(15)
Check
piston
rod and
return
spring
(12)
for
proper
compression
during
stroke
(9
Ibs.,
(initial)
to
32
Ibs.
3/4
stroke)).
F.
Reinstall
master
cylinder
in
reverse
sequence
of
5
removal.
97
G.
Bleed
brake
system
(refer
to
SECTION
o
12-20-05).
1
r6
O~I
~n9
~-4
4.
PARKING BRAKE VALVE
Removal
and
disassembly.
3
A.
Remove
forward
fiberglass
belly
skin.
B.
Disconnect
parking
brake
control
at
parking
brake valve
arm.
C. Disconnect and
cap
hydraulic
lines.
2
D.
Remove
parking
brake
valve.
E. Disassemble
parking
brake
valve:
(Refer
Figure
32-20).
(1)
Remove
both
fittings
(1)
from
valve
housing
(7), springs
(8)
will
come
out
with the
fittings.
(2)
Remove
poppet
valves
(2)
and
pins
(3),
from
PARKING
BRAKE VALVE FIGURE
32-20
housing
by
bumping
on
table
top.
(3)
Remove
both
fittings
(4)
from
end
of
housing.
4-99
32-40-04
21
OLDWILLWAYNE