Piper Cherokee Six - Page 472

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
8-16.
FUEL
QUANTITY
SENDER/GAUGE
CHECK
(INSTALLED)
(PA-32R-300
and
those
32-300's
above
S/
N
32-7940001).
Fuel
quantity
sender
units
and
fuel
quantity
gauges
can
be
checked
while
mounted
in
the
airplane
by
using
the
following
procedure:
a.
Put
the
fuel
selector
levers
in
the
"OFF"
position.
Completely
drain
fuel
tanks
that
relate
to
the
fuel
quantity
senders
and
gauge
to
be
checked.
(Refer
to
Draining
Fuel
System,
Section
II.)
b.
Level
airplane
laterally
(refer
to
Leveling,
Section
II)
and
position
the
aircraft
with
a
1
degree
nose
up
attitude.
NOTE
The
electrical
system
should
supply
12
to
14-volts
to
the
gauge.
c.
With
the
master
switch
in
the
"OFF"
position,
the
gauge
needle
should
be
centered
on
the
white
dot
to
the
left
of
the
"O"
radial
mark,
with
a
maximum
deviation
of
1/4
needle
width.
If
not
within
this
tolerance,
the
gauge
should
be
replaced.
d.
With
the
master
switch
in
the
"ON"
position
and
no
fuel
in
the
tanks,
the
gauge
needle
should
be
centered
on
the
white
dot
to
the
left
of
the
"O"
radial
mark
with
a
maximum
deviation
of
1/4
needle
width.
If
not
within
this
tolerance,
the
gauge
should
be
replaced.
e.
Place
2
gallons
of
fuel
in
the
wing
fuel
tank
that
relates
to
the
gauge
and
sender
unit
being
checked.
f.
With
12
to
14-volts
DC
supplied
to
the
electrical
system
and
the
master
switch
in
the
"ON"
position,
the
needle
should
be
centered
on
the
"O"
radial
mark;
plus
O,
minus
1
needle
width.
g.
If
the
needle
does
not
read
within
the
above
tolerance,
remove
the
sender
wire
from
the
rear
of
the
gauge
and
check
the
resistance
to
ground
through
the
sender
circuit.
If
the
resistance
is
not
within
5
±
1
ohms,
replace
the
inboard
sender.
Then,
recheck
as
specified
above.
h.
Add
fuel
to
the
tanks
in
accordance
with
the
information
given
in
Table
VIII-II
until
tanks
are
full.
Observe
the
gauge
reading
at
each
10
gallon
increment.
i.
With
the
tanks
full
and
master
switch
"ON,"
the
needle
should
be
centered
on
the
"F"
radial
mark
within
±
1
needle
width.
If
not
within
this
tolerance,
adjust
the
electrical
adjustment
(refer
to
Figure
8-4)
just
sufficiently
to
bring
it
within
tolerance;
do
not
center
the
needle.
ELECTRICAL
EMPTY
DOT
ADJUSTMENT
ACCESS
HOLE
FUEL
U.S.
Figure
8-4.
Fuel
Gauge
(PA-32R-300)
FUEL
SYSTEM
Revised:
7/28/75
2J4