Raytheon Beech Baron E55 - Page 341

Raytheon
Aircraft
Company
BARON
55
AND 58
SHOP
MANUAL
NOSE GEAR ASSEMBLY
NOTE:
Prior
to
assembly,
immerse all
internal
parts
(except
felt
pad
(24)
in
hydraulic
fluid
(13,
Consumable
Materials
Chart,
Section
2) (Ref. Figure 11).
a.
install
new
O-ring
(38)
into the
upper
bearing
of the barrel
(23).
Two
dowel rods
may
be used
to
work
O-ring
into
position
(Ref.
Figure
10
and
11).
b.
Saturate
felt
pad
(24)
with
SAE
10W30
oil before installation. install
felt
pad
(24)
in
the
barrel
(23).
c.
Install
new
scraper
(31),
adapter
(32)
and
secure
with lower
snap
ring
(33).
d.
Install barrel
(23)
into
the
brace
(15).
e.
Install shims
(3)
as
necessary.
NOTE:
Add
or remove
lamination
from
shims
(3)
as
necessary
for
free
operation.
Maximum
clearance
is 0.012
between collar
(2)
and brace
(15).
f.
Install collar
(2)
to
brace
(15)
and
tighten
two
bolts
securing
collar. Rotate collar
to
ensure
freedom of
movement
after
tightening
bolts.
Adjust
shims
(3)
as
necessary
to
allow
collar to
rotate
freely.
Secure
bolts with
safety
wire.
g.
Install air
valve
assembly
(1)
excluding
valve
core.
h. Install
upper
torque
knee
(37)
with the
pins (25
and
34)
and
cotter
pin
(36).
1
NOTE:
Install
the
washers
(17
and
19)
above
or
below the
bushing
(18)
on
the
brace
(15)
to
align
the
shimmy
damper
(20)
with the
lug
on
the
barrel
(23).
i.
Position
shimmy
damper (20)
and install the
bushing
(18),
bolt
(21),
washers(l7
and
19)
and
nut
(16).
j.
Install the
bushing
(28),
bolt
(26),
washer
(27
and
29)
and
nut
(30)
to connect
the
shimmy
damper
(20).
k. Slide the
piston
and
fork
assembly
(48)
into the barrel
(23).
i.
Connect
the
lower
torque
knee
(46)
with the
pins (42
and
47),
washers
(49
and
51)
and
cotter
pin
(50).
m.
Install the
bushing
(45),
bolt
(43),
washers
(39
and
44),
nut
(41)
and
cotter
pin (40),
to
connect
the
upper
and
lower
torque
knees
(37
and
46)
n.
Install
new
O-ring
(5)
and
piston ring
(7)
to
orifice
tube
(6).
Push orifice tube
(6)
down
into the
barrel
(23)
and
secure
by
attaching
snap
ring
(4)
to
the
top
of
collar
(2).
o.
Lubricate
bearings
at
grease
fittings
with
grease
(8,
Consumable
Materials
Chart,
Section
2).
p.
With the
strut
in
the vertical
position
and
approximately
1/4
in.
from
fully
compressed,
fill
through
the
air valve
assembly
(1)
with
approximately
500/550
cc
of
hydraulic
fluid
(13,
Consumable
Materials
Chart,
Section
2).
q.
Fully
extend and
recompress
the
piston
and
fork
assembly (48)
three times
or
until
no
additional
fluid
can
be
added. Add additional
fluid
as
required
with
the
strut
in the
compressed position.
r.
With the
piston
and fork
assembly
(48) compressed,
install the valve
core
into air
valve
assembly
(1).
WARNING:
As
with all
operations
involving equipment
under
high
pressure,
exercise
caution
when
performing
the leak
test;
avoid the
areas
directly
above
and below the
strut.
E22
SECTION
5Page
47