Raytheon Beech Baron E55 - Page 306

Raytheon
Aircraft
Company
BARON
55
AND
58
SHOP
MANUAL
SYSTEM
MAINTENANCE
AND
ADJUSTMENT
No
maintenance
is
required
for the
landing
gear
safety
system,
other than
replacing
defective
units
or
checking
the
electrical
wiring
for
condition,
security
of attachment
and
tightness
of
electrical connections. The
switches
are
preset
and
adjustment
will
not
normally
be
required;
however,
should
the
system
fail
to
function
properly,
the
following
checks and
adjustments
may
be
accomplished.
CHECK
OF SYSTEM
WITH SAFETY
SWITCH
IN
TEST
POSITION
a.
Place
the
throttles
in
the closed
or
retarded
position.
b.
Place the
battery
master
switch
ON.
The
landing
gear
circuit
breaker
may
be
either
in
or
out.
c.
Place the
landing
gear
safety
system
switch in the
momentary
full
up
(TEST)
position.
Noise
or
movement
of
the
solenoid
in
the
landing
gear
position
switch
indicates that
the automatic
landing
gear
extension
part
of
the
system
is
functioning
properly.
The
ON-OFF
switch
returns
normally
to
the
ON
position
unless the
pilot
intentionally
places
the
switch
in
the
OFF
position.
MICROSWITCH
ADJUSTMENT
I
The
landing
gear
safety
system
microswitches
are
set to
operate
at
3
to
5
in.
Hg
above the
throttle
waming
horn
switch
(see
this section for
proper
setting
of
the
Throttle
Warning
Horn
Switch).
This
is
accomplished
by
a
step
in
the
cam
which
operates
the
throttle
warning
horn switch.
PRESSURE
SWITCH
ADJUSTMENT
The
pressure
switches
are
preset
and
will
not
normally require
adjustment.
Because
of
the
built
in
tolerance
of
these
switches,
they
should
not
be
tampered
with unless
radically
out
of
adjustment,
that is
unless
the
switch
in
question
fails
to
actuate
at
an
airspeed
within
2
mph
above
or
below
the
setting
recommended
for
it. Even
then
the
system
plumbing
and
electrical
wiring
should
be
checked
to
ascertain
that the
source
of
trouble is
not
something
other than
improper
adjustment
of the
pressure
switches.
NOTE:
Before
starting
the
rigging
procedure, place
the
airplane
on
jacks
and
start
the
retraction
cycle
enough
to
break the
down lock tension.
Apply
a
sharp
load
by
hand in
an
aft
direction
against
the
nose
gear
strut.
If
this
causes
the
main
gear
wheels
to
move
approximately
1/2 to
1
in.,
it
is
a
good
indication that
the
landing
gear
actuator
assembly
needs overhaul
and/or
internal
adjustment.
a.
Placetheairplane
onjacks.
I
b.
With the
master
switch
ON,
the
landing
gear
circuit
breaker
on
and the
landing
gear
warning
circuit breaker
off,
advance
the throttles
to
maximum
position.
c.
Place
the
landing
gear
safety
position
switch
in
the
ON
position.
d. Place the
landing
gear
position
switch in the
UP
position.
e.
Clamp
a
section of soft rubber
tubing
over
the
pitot
head
inlet,
making
certain that
the
connection
is
airtight.
I
Ensure
that
pitot
heat is turned
off.
CAUTION:
To avoid
rupturing
the
diaphragm
of
the
airspeed
indicator,
the rubber
tubing
must
be roiled
slowly.
f.
Crimp
the
end
of the
tubing
and
roll it
up
until
the
airspeed
indicator
registers
70
mph.
The
landing
gear
will
start
retracting
immediately
if
the
pressure
switch
is
properly
adjusted.
Jun
30/04SECTION
5
E22