Piper Cherokee Six - Page 650

PIPER
CHEROKEE
SERVICE
MANUAL
SECTION
XI
ELECTRONICS
11-1.
INTRODUCTION.
This section
of the
manual
contains
instructions
relating
to the
removal,
installation
and
operational
checks
of the
Emergency
Locator
Transmitter
(ELT)
and also
removal
and installation
of
the RCA
Weather
Scout
radar
antenna.
11-2.
EMERGENCY
LOCATOR
TRANSMITTER.
11-3.
DESCRIPTION.
The
electrical
power
for the
ELT
is
totally
supplied
by its
own
self-contained
battery.
The
magnesium
batteries
used
on
early models
have a
service
life of
four
years. However,
to comply
with
FAA regulations,
magnesium
batteries
must be
replaced
every
2 years.
If the
transmitter
has
been
used in
an emergency
situation
during
this 2 year
period
or it has
more than
one hour
of accumulated
test
time, the
battery
must be replaced
ac-
cording
to FAA
regulations.
To replace
the
battery pack
in the
transmitter,
it is necessary
to
remove
the transmitter
from
the aircraft.
(Refer
to paragraph
1 1-4.)
11-4.
BATTERY
REMOVAL
AND
INSTALLATION.
(2 year, magnesium
battery
refer
to
Figure
11-1.)
The
ELT
is located
on
mounting
brackets
on the
right
side
of the
fuselage
aft
of sta. 259.30.
a.
Remove
the
access
plate on
the right
side
of the
fuselage
aft
of sta.
259.30.
b. Set
the
ON/ARM/OFF
switch
on
the
transmitter
to the
OFF
position.
c.
Disconnect
the antenna
coax
from
the
transmitter.
d.
Disconnect
the harness
to
the
pilot's
remote
switch.
e.
Remove
the
rear
mounting
bracket
by pulling
the
plastic
knob
out.
Remove
the
transmitter
from
the
airplane.
f.
Remove
the
two
long
or
four
short
screws
securing
the
transmitter
plain
end
cap.
Remove
the
plain
end cap.
g.
Disconnect
the
battery
connector
from
the board
terminals.
h. Withdraw
the
battery
pack
from
the
transmitter
case.
i. Before
installing
the
new
battery
pack.
check
the
replacement
date
printed
on
the
battery.
Transfer
this date
onto
the outside
of the
ELT.
j. Slide
the
new
battery
pack,
plain
end
first,
into transmitter.
It
may
be necessary
to
rotate
the
battery
slightly
to
get it
seated
properly
in
the
transmitter
case
and
to achieve
correct
orientation
of the
battery
connector.
k. Connect
the
battery
connector
to
board
terminals.
1.
Insure
O-ring
is fitted
in
plain
end
cap and
correctly
seated.
ELECTRONICS
Revised:
12/15/80
3F8