Cylinder Head Temperature Gauge - Piper Cherokee Six Service Manual

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