Shimmy Dampener; Servicing The Brakes; Serv1Cing Tires - Beechcraft TRAVEL AIR 95 Shop Manual

a.
Remove
the
air valve
cap and
depress the
valve
the
piston
rod.
core to
release
the air pressure.
b. Remove
the
internal snap ring,
scraper ring and
WARNING
the
end
seal from the
aft end of
the barrel. (Opposite
clevis end.)
Do not unscrew
the
air zalve
assembly
until all
air pressure has been released
c. Insert
a 6/32
threaded
rod into
the
floating
piston
or it may be blown
off with considerable
and remove
the
piston, using
extreme
care when
force,
causing
injury
to
personnel or
moving
the
"O" ring seal of
the
floating
piston past
property damage,
the
drilled holes in
the
piston rod.
b. With
the
weight of
the
aircraft on
the
gear,
d. Push
the
piston
rod
to
the
clevis
end
and fill
the
loosen
the
filler
plug slowly
to
assure
that
all air barrel with MIL-H-5606 hydraulic
fluid.
has
escaped,
then
remove
the
filler plug.
e. Slowly
actuate
the
piston
rod,
allowing
the
fluid
c. With
the
shock strut fully deflated,
jack
the
strut to
flow into
the clevis end
chamber,
then
return the
barrel 1/4 inch
off
the
fully compressed
position,
piston
to the
clevis
end
of
the
barrel.
block it
there
and
fill
to the
level of
the
filler plug
hole with MIL-H-5606
hydraulic fluid.
f
.
Refill
the
displaced fluid and replace
the
end
seal,
scraper ring and internal snap ring.
d. Jack
the
main
strut an additional
2
inches,
then
replace
the
filler
plug, depress
the
valve core and
g.
Fill
the
piston
rod with fluid,
lower
the jack,
releasing
the excess oil and
air.
On
the
nose strut, merely
remove
the
block and allow
h.
Reinstall
the
floating piston,
spring,
washer
and
the excess oil
to
drain away,
then
install
the filler
cotter
key.
Spread
the
cotter
pin
to
allow
clearance
plug. for
the
measuring
wire.
e.
Rock
the
airplane
gently
to
prevent possible
SERVICING
THE
BRAKES
binding
of
the
piston in
the
barrel, inflate
the
main
gear
strut until
2
inches
of
the
piston
is exposed.
The
Goodyear
single-disc,
single
or
dual cylinder
Inflate
the
nose gear
until 2
inches
of
the strut
is
type
and ring disc
type
hydraulic brakes
require
no
exposed
on aircraft prior
to
Serial
TD-303.
On adjustment,
as
the
pistons
move
outward
to
compen-
airplane
Serial
TD-103
and after,
inflate
the
nose
sate for
lining
wear.
Discs
should
be
checked for
gear strut until
3-1/2
inches
of
the strut
is
exposed.
sma11 nicks
or sharp edges
which could damage
the
(All measurements are made with
the
aircraft resting
brake
linings.
Worn,
dished
or
distorted
brake discs
on
the
gear.) should
be
replaced. The
fluid
reservoir, accessible
through the
forward baggage compartment,
should
be
f.
The
shock strut
pistons
must
be
clean.
Remove
checked
regularly
and a
visible fluid level maintained
foreign material by wiping
the
strut with a
cloth
on
the
dip stick
at
all
times
by adding
MIL-H-5606
containing
hydraulic
oil.
hydraulic
fluid.
SHIMMY DAMPENER
In
service,
the
brake
discs will iose
their
green
(prime) color and
become bright,
then
will assume
a
To check
the fluid level
in
the
shimmy dampener,
light
straw
color
as
the
result
of heat.
These
changes
insert a wire
of approximately
1/16 inch
diameter
in
color are
normal
and
need not be
a cause for
con-
through
the
hole in
the
disc at
the
end of
the piston
cern. A glazed appearance
of
the
brake linings
also
rod until it
touches the
bottom
of
the floating piston-
is
normal;
the
glaze actually
improves
the
effective-
Mark
the
wire,
remove and measure
the
depth of
ness of
the
brakes.
insertion.
Inserting
the
wire in
the
hole of
the
float-
ing piston, rather
than
letting
it
rest against
the
face
of
the
piston, will
give
a more
accurate
check.
SERV1CING TIRES
NOTE
Aircraft
prior
to
TD-533
use either
4-ply or
6-ply,
To
determine
if
the
wire
is inserted in
6. 50 x 8
tires
on
the
main
Landing gear
wheels.
Air-
the
hole of
the
floating
piston, insert
the
craft
TD-534
and after
use
6-ply, 7.00 x 6
tires.
On
wire
several
times,
noting
each
insertion
all aircraft,
the
nose
wheel tire
is
either
a 4-ply
or
depth. When
the
wire is
correctly
in-
6-ply, 5.
00 x 5 tire.
The
tubeless
side-inflated
nose
serted
the
length
will be approximately
wheel
tire
on airplane serial
TD-127,
TD-300
thru
1/4
inch greater. TD-601, except TD-303, and
the tubeless
main wheel
tires
on airplanes
TD-300
thru
TD-603
require
the
When
the
shimmy dampener
is
full,
the
insertion
installation
of a different
wheel assembly
before
they
depth
is
2-3/16
inches. The depth reading
is
3-1/16
can be
mounted
on prior aircraft.
Maintaining
proper
inches. To
add
MIL-H-5606 hydraulic fluid, remove tire
inflation
will minimize
tread
wear and aid in
the
shimmy
dampener and proceed
as follows:
preventing
tire
breakage when running
over sharp
stones
and
ruts. When
inflating
tires,
visually
in-
a. Remove
the
cotter
key, washer,
and spring from
spect
them
for cracks or
breaks.
2-14