Raytheon Beech Baron E55 - Page 347

Raldheon
Aircraft
tompany
BARON
55
AND
58
SHOP MANUAL
NOSE
GEAR OVERHAUL
(TE-301
AND
AFTER;
TH-1 AND
AFTER)
I
NOTE:
Refer
to
the
OVERHAUL
AND
REPLACEMENT
SCHEDULE
in
Section 15
for
time
limits and maintenance
checks
of the
nose
gear.
Experience
in the
field indicates the
points
of
greatest
wear
on
the
nose
gear
are
the
upper
and lower
strut
bearings
in
the
strut
housing.
The
forces exerted
on
the
bearings during
takeoff
and
landing
tend
to result
in
an
oversized
condition.
The oversized
condition
of
the
upper
and
lower
strut
bearings
will
eventually
result
in
leakage
of
hydraulic
fluid.
When
replacement
of
all
O-rings
in
the
landing
gear
fails
to
stop
leaks,
the
oversized condition of the
bearings
is
probable.
In such
instances
the
landing
gear
should
be
overhauled.
The
following
information
will
aid in
determining
the
extent
of
landing
gear
wear
and whether
it is
possible
to
overhaul
or
necessary
to
replace
critical
landing
gear
components.
NOSE
GEAR
DISASSEMBLY
I
a.
Place
the
nose
gear
in
a near
vertical
position
to
prevent
the
hydraulic
fluid from
spilling
when the
air
valve
assembly
(14)
is
removed
(Ref. Figure
12).
WARNING:
Do
not
remove
the
air
valve
assembly
(14)
until
all
air
pressure
has been
released.
It
may
be
blown
out
with
considerable
force and
cause
personal
injury
or
property
damage.
b.
Release the air
pressure
in
the
nose
gear,
cut
the
safety
wire and
remove
the
air
valve
assembly
(14).
c.
Invert
the
nose
gear
and drain
out
the
hydraulic
fluid.
d.
Cut
the
safety
wire
and
remove
the
bolts
attaching
the
upper
strut
housing
retainer
(2)
to
the
gear
brace
(6).
Remove the
upper
strut
housing
retainer
(2),
laminated
shims
(3)
and
spacer
(4).
e.
Slide
the
strut
housing
(15)
out
of the
gear
brace
(6).
f. Remove
the
nut,
washers,
bolt(l9)
and
bushing
(20)
connecting
the
upper
and lower
torque
knees
(18
and
22)
together.
NOTE:
Only
remove
bushings
(21
and
25)
when
required
for
replacement.
g.
Cut
the
safety
wire
and
remove
the
lower
strut
retainer
(39)
from
the
strut
housing (15),
using
a
spanner
wrench.
h.
Slide
the
piston
and
axle
assembly (40)
out
of
the
strut
housing
(15).
i. Remove items
(30) through
(38)
from
the
piston
and
axle
assembly
(40).
j.
Remove
the
nut,
washers,
seal
(13)
and
the orifice rod
assembly (26).
I
k. Remove
the
nut
and
washer
(29)
and
the
O-ring
(28)
and orifice
(27)
from
the
orifice
rod
assembly (26).
WARNING:
Do
not
disconnect
the
torque
knees
(18
and
22)
without
first
deflating
the
nose
gear.
The
torque
knees
provide
the
extension
stop
for the
piston
and axle
assembly (40).
When
disconnected,
the
piston
and axle
assembly
(40)
is
free
to slide
out
of the
strut
housing.
NOTE:
Only
remove
bushings
(16)
when
required
for
replacement.
i. Remove
the
roll
pin
(17), retaining
pin,
washers and
cotter
pin
attaching
the
upper
torque
knee
(18)
to
the
strut
housing
(15).
NOTE:
Only
remove
bushings
(24)
when
required
for
replacement.
E22
SECTION
5
Jun
3aK)4Page
53