And After) - Raytheon BEECH BARON 58P Maintenance Manual

BEECHCRAFT
BARON 58P AND BARON 58TC
MAINTENANCE MANUAL
TJ-168, except TJ-153 and 3.9 psi
on
TJ-153 and TJ-169
CTJ-3 AND AFTER) in
Chapter 52-10-00. If leakage still
and after
as
observed
on
the CABIN PRESSURE indicator.
exists
around
the
door, replace
the ah cabin door seal
as
described in AFT
CABIN DOOR SEAL REPLACEMENT
(TJ-3 AND AFTER) in
Chapter 52-10-00. Perfomn leak
test
NOTE
as
described
in
steps
"a" through "h".
5.
Check around the windows for leaks,
remove
Ensure that the back pressure air is maintained
and replace
windows found to be defective.
at
.7 psi
above the cabin differential pressure
on
the CABIN PRESSURE indicator
on
the
test
unit.
NOTE
h. Pressurize the cabin to
a
differential pressure of
Ensure that the test unit is
working properly and
3.00
-c
.50. Allow five minutes for the cabin
pressure
to
all
gages are
accurate.
stabilize. After stabilization is established, check the cabin
for excessive
leakage.
A 38 cubic feet per minute
leakage is
permissible. If the leakage
is indicated
at
more
than 38
6. Gain
access
to the points where the control
cubic feet per minute isolate the
cause
and repair
as
cables, electrical wire bundles, plumbing, and
landing
gear
described in the
following paragraphs,
retract rods enter the pressure vessel by removing the
seats,
floorboards, and upholstery.
Fill the control cable
1.
Check all connections
to
the pressure
pressure
seals with Mil-6-23827
grease
(11,
Chart
207, 91-
vessel,
test
unit,
and the '7" and/or "Y" fittings
in
the
test
00-00) and paint
the control
cables,
through-out its full travel
hoses
to
ensure
that
no
leaks exist. Repair all leaks and
through the pressure seals with MlL-G-23827 grease (11,
repeat steps
"f." through
"h".
Chart 207, 91-00-00). Spread the electrical wire bundles
2.
If leaks
are
suspect
through the
outflow
or
apart
and apply EC1239A1/2 sealant around each wire. After
safety
vales,
depressurize
the pressure vessel
at
a
rate
of
each wire is vinyl
around the wire
1,000
feet per minute,
disconnect the back pressure hose
at
bundle (butted against seal fitting) and inject
EC1239AVz
the
safety valve and install
a
Leak Test Valve (P/N 102-
sealant in the notch of the seal fitting. Apply EC1239B1/2
590020/939
or
equivalent)
on
the atmosphere
ports
of the
sealant
to
all plumbing fittings
at
Be pressure vessel.
safety
and outflow valves. Pressurize the pressure vessel
Ensure that
the landing
gear
retract rods
pressure boots
are
per
steps
"f" through
"h", allow the pressure
to
stabilize.
properly installed without damage. Perform the
Leakage through each valve shall
not
exceed .23 pound
per
pressurization leak
test
as
described in "a" through "h".
minute (192
cubic feet per hour). Slight adjustment of the
7.
Remove all seats, floorboards, and
outflow and safety valve mounting
screws
may reduce the
upholstery panels.
Check the
complete
pressure vessel for
leakage rate
considerably. If the outflow and/or safety
leaks. Isolate and
repair
all leaks. Repeat
steps
"a"
through
valves
are
determined
to
be defective, replace
as
"h".
necessary. Perform
the leak
test
described
in
steps
"f'
through "h".
i. With the pressure leak
test
within tolerance,
3.
Check the seal around the forward cabin
depressurize the pressure vessel and
remove
the
safety
door. If excessive leakage
is detected around the forward
net.
cabin door, check
to
ensure
that the door seal is inflated
j. Remove all
test
hoses from the airplane and
and the door is closed securely.
If
leakage
continues,
connect the hoses between the fuselage and the engines.
perform
FORWARD CABIN DOOR LEAK TEST
as
k.
Install the control
port
tubing
on
each outflow and
described in Chapter 21-31-00. Repair
any leaks found in
safety valve.
the door seal and perform steps "a"
through "h". If leakage
i.
Connect the forward cabin door pressure tube
to
is still indicated around the forward cabin door, rig the door
the forward cabin door pressure
system.
in accordance with
FORWARD CABIN DOOR RIGGING
m.
Ensure that the back pressure test hose is
(TJ-3 AND AFTER) in
Chapter 52-10-00. Perform leak
test
removed from the atmosphere
vent
fitting of the safety valve
as
described in
steps
"a" through
''h". (located
on
the aft side of the ah bulkhead).
4.
Check the ah cabin door for leakage, if
n.
Install floortoards, upholstery panels, seats, and
leakage is indicated, adjust
the aft cabin door latch
as
access
panels which
were
removed during the
test
described in AFT
CABIN DOOR LATCH ADJUSTMENT
procedure.
21~0-00
Page 204
Mar21/80