Piper Cherokee Six - Cylinder Head Temperature Gauge

PIPER
CHEROKEE
SIX
SERVICE
MANUAL
9-84.
CYLINDER
HEAD
TEMPERATURE
GAUGE.
9-85.
GENERAL.
The
cylinder
head
temperature
gauge
is
in
the
instrument
cluster,
located
on
the
instrument
panel.
This
instrument
measures
the
cylinder
head
temperature
using
a
sender
located
in
a cylinder
head.
The
head
location
is
determined
by
the
engine
manufacturer.
It
is an
electrical
instrument
and
is
wired
thru
the
instruments
circuit
breaker.
9-86.
TROUBLESHOOTING.
TABLE
IX-XVI.
CYLINDER
HEAD
TEMPERATURE
GAUGE
Trouble
Cause
Remedy
Instrument
shows
no
indication.
Power
supply
wire
broken.
Repair wire.
Defective
instrument.
Replace
instrument.
Master
switch
off.
Instrument
goes
all
the
way
to upper
stop.
Wire
broken
between
sender
and
gauge.
Repair
wire.
Defective
sender.
Replace
sender.
9-87.
REMOVAL
AND
REPLACEMENT.
Refer
to
Paragraph
9-76
of
this
section.
9-88.
FUEL
FLOW
GAUGE.
9-89.
GENERAL.
The
fuel
flow
gauge
is a
non-electric
pressure
gauge
mounted
in
the
bottom
half
of
the
manifold
pressure
gauge
located
in
the
lower
portion
of the
instrument
panel.
This
instrument
measures
flow
by
reading
the
pressure
drop
across
a
fixed
orifice
located
in
the
fuel
divider.
With
a constant
fuel
pressure
being
supplied
by
the
engine
driven
pump,
and
putting
a
fixed
orifice
in
the
fuel
divider
head,
and
then
measuring
the
pressure
drop
downstream
of
the
orifice
against
a constant
static
pressure,
the
resultant
pressure
can
be
calibrated
in
gallons
per
hour
flow.
The
constant
static
pressure
is supplied
by
a
vent
line
running
to
the
engine
compartment.
The
vent
line
to
the
engine
compartment
automatically
compensates
the
instrument
for
altitude.
INSTRUMENTS
Revised:
12/4/79
2L10