Raytheon Beech Baron E55 - Brake System

Ray~heon
Aircraft
Company
BARON
55
AND
58
SHOP
MANUAL
BRAKE
SYSTEM
I
BRAKE
WEAR
LIMITS
(TC-1
THRU
TC-422,
EXCEPT
TC-371)
The
brake
lining
wear
is
indicated
by
the distance between
the steel brake
disc
and
the outside
edge
of
the brake
housing
with
the brakes
applied
(Ref. Figure
1). Replace
the
linings
when
this
distance
is
0.250 in..
On
TC-1
thru
TC-99
the
measurement
is
to
the
face
of the disc
outside
of the
lining
contact
area.
On
TC-100
thru
TC-422,
except
TC-371,
the
measurement
is
to
the
recessed
surface
at
the
outer
edge
of
the
disc.
Replace
the
steel
brake
disc
when
the thickness
is
0.225
in.,
measured
at
the thinnest
section. The
brake
disc and wheel
side
must
also
be
replaced
when the
distance
between
the disc
teeth
and wheel
teeth
reaches 0.040 in..
(TC-423
THRU
TC-662,
TC-664
THRU
TC-978,
TC-980
THRU
TC-983,
TC-985 THRU TC-998
AND
TC-1002)
On
serials noted
above,
with
the
brakes
applied,
measure
the distance between
the
brake disc and
the
flat
surface
of the
brake
housing (parallel
to
the
disc)
near
the
center
of the disc face
(Ref.
Figure
1).
Replace
the
linings
when
this distance
is
0.187
in..
Replace
the
brake
disc
when the thickness
of
the
brake
disc
has
wom
to
0.310
in.,
or
wheel
an
irregular
surface
on
the
face
of the
disc
has
developed
in
excess
of
1/16
in..
Replace
the wheel
half
when
any
of
the disc drive
teeth
have
worn
to
a
thickness
of 0.070 in,
when
measured
0.100
in. from
the
top
of
the tooth.
(TC-371,
TC-663,
TC-979, TC-984,
TC-999
AND
AFTER,
EXCEPT
TC-1002;
TE-1
AND
AFTER;
TH-l AND
AFTER)
On
serials noted
above,
the
brake
linings
should be
replaced
before
the metal back
plate
is
exposed
through
the
abrasive surface
(Ref.
Figure
1).
This
can
be
checked
visually
without
disassembling
the
brake.
The
minimum
allowable
thickness
for the
abrasive
surface
is
0.100
in..
The
brake
disc
should
be
replaced
when
its
thickness
measures
0.330
in..
(TC-2092
AND
AFTER;
TE-1114
AND
AFTER;
TH-873 AND AFTER
WITH
OPTIONAL
HEAVY
DUTY
BRAKES)
On
serials noted
above
the
minimum allowable
thickness of the
abrasive
surface
of
the brake
linings
is
0.100
in..
The
brake disc should be
replaced
when its
thickness
measures
0.475
in.
(Ref.
Figure
1).
PARKING
BRAKE
ADJUSTMENT
Put the
parking
brake control
in the
OFF
position
and
check
the
parking
brake valve
to
make
sure
it
is
in
the
OFF
position.
Loosen the
lock
nut
and
screw
and take
up
slack in
the
actuator
wire.
Tighten
the
screw
and
lock
nut
down
on
the
brake
actuator
wire.
Pull the brake control
to
the
ON
position
and
pump
the brakes
to
see
if
the
pedals
are
solid.
If
the
brake
pedals
are
not
solid,
put
the
brakes
in
the
OFF
position
and recheck
the
rigging.
ADJUSTING
THE
LINKAGE ON
BRAKE
MASTER
CYLINDER
The
proper
linkage
arrangement
will
adjust
the brake
pedals
to
a
straight
upright
position.
This is considered
the
best
adjustment
since
it will
prevent
the
pedals
from
hitting
the
firewall
in
their
extreme
forward
position.
To
adjust
the
linkage
for this
position
loosen
the
jam
nut
on
the
upper
end of
the
master
cylinder
piston
rod and
turn
the
piston
rod
to
attain the
desired
length.
After
both
pistons
are
adjusted
to
the
same
length tighten
the
jam
nuts
(Ref.
Figure1)´•
I
E22
SECTION 5
Jun
30104Pagel