Main Wheel Assemblies; Nose Wheel Assembly; Brakeassembly; Hydraulic Brake System - Raytheon BEECH BARON 58P Maintenance Manual

BEECHCRAFT
BARON 58P AND BARON 58TC
MAINTENANCE MANUAL
WHEELS AND BRAKES
DESCRIPTION
AND BRAKEASSEMBLY
OPERATION
MAIN WHEEL ASSEMBLIES
Goodrich brake assemblies
are
installed
on
the airplane. The
brake assemblies
are
designed for
use
with MIL-H-5606
The
airplane is equipped with Goodrich 6.50
x
8 wheel
hydraulic fluid
(13, Chart
207, 91-00-00)
to
withstand 550
assemblies,
to
600
psi operational
pressure with
zero
psi back
pressure.
The wheel consists of
an
inner and
outer
magnesium
wheel
The Goodrich brake contains
one
rotating brake disc, which
half held together with bolts,
washers and
nuts.
The
is keyed
to rotate
with the
wheel,
two
carrier linings,
a
washers
are
used beneath the
nuts
and bolt heads
to prevent torque
plate
and three piston insulators which
are
attached
galling and
stress concentration.
to
the
piston housing.
Braking action
occurs
when
hydraulic
pressure
is
applied
to
the three small pistons
in
Bearing
cups,
cone
bearings and seals
are
installed in the the piston housing
which force the carrier
linings together
hub
area.
The Goodrich
wheel assemblies
are
provided with creating friction between
the
rotating disc and stationary
balance weights.
parts. The
pistons
are
sealed
against leakage with preformed
packings. The brake assemblies
are
interchangeable
between
Screws and
safety wire retain sixteen torque
keys in the
right and left by
changing the location
of the bleeder
slots of the
flange
area
of the Goodrich inner wheel half.
adapter.
The torque
keys retain the
lugs
of the brake disc which
rotate
with the wheel when the brake and wheel
are
mounted
on
the landing gear axle.
HYDRAULIC BRAKE SYSTEM
The
wheel assemblies
are
secured
to
the axles with
bushings, washers,
nuts
and
cotter
pins.
The
hydraulic
brake system is
operated
by depressing
the
pilot's rudder
pedals which compresses the
piston rods of
the attached
master
cylinders. The hydraulic
pressure
NOSE WHEEL ASSEMBL
Y
resulting
from the
movement
of the
master
cylinder pistons
is transmitted
through flexible hoses and fixed aluminum
The airplane is
equipped with
a
Cleveland 5.00
x
5
nose
tubing
to
the brake disc assemblies mounted
on
each main
wheel
assembly, tube
type
tire. The wheel consists of
an
landing gear. This
pressure
forces the brake
pistons
to press
inner and
outer
wheel half, which
are
shell molded
against the linings
and discs of the brake
assembly. Upon
magnesium castings.
Both halves
are
held together with release
of pressure
against the pistons the brake discs will
bolts,
washers and
nuts.
Washers
are
used beneath the
nuts
have
a
tendency
to
drag against the stationary liners. A
and bolt heads
to
prevent
galling
and
stress
concentration,
parking brake
valve is installed adjacent
to
the rudder
pedals
between the
master
cylinder and the wheel brake
Bearing
cups,
cone
bearings and seals
are
installed
in the
assemblies. After the pilot's pedals
have been depressed
to
hub
area.
Identification and instruction
plates
are
installed build
up pressure in the
brake lines,
the
parking brake
valve
on
each inner wheel half.
is closed
by pulling
out
the parking brake handle. This
closes the valve and
retains the
pressure
in the brake lines.
The wheel
assembly is secured
to
the axle with
a
bushing, The
parking brake is released when the
parking
brake
washer,
nut
and
cotter
pin,
handle
is pushed in and the
pedals
are
depressed briefly
to
equalize the
pressure
on
both sides of the
valve, allowing it
to
open.
The
optional dual brake
system
provides the
TIRES
hydraulic braking
action from the copilot's
postition
as
well
as
the
pilot's
position. This is
possible by the addition of
a
The main wheel tires
on
the airplane
are
19.50
x
6.75
x
8, 10 shuttle valve adjacent
to
each
set
of rudder pedals and
two
ply tube
type tires (replacement tube is 19.50
x
6.75
x
8).
master
cylinders
at
the copilot's postion.
The shuttle valves
permit
the braking action
to
change from
one
position
to
The
nose
wheel tire installed
on
the airplane
is
a
5.00
x
5, 6
the other.
ply, tube type tire.
"END"
32-4600
Page
1
Nov 30n6