Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual page 352

PIPER CHEROKEE WARRIOR SERVICE MANUAL
TABLE X-XI. TROUBLESHOOTING WARRIOR III ENGINE OIL PRESSURE GAUGE
TROUBLE
Excessive error at zero.
Excessive scale error.
Excessive pointer oscillation.
Sluggish operation of pointer or
pressure fails to build up.
d. PA-28-161, Warrior III oil temperature gauge.
The oil temperature gauge is mounted in the cluster on the instrument panel, and reads the oil t e m-
perature in degrees fahrenheit. The cluster consists of the fuel pressure gauge and the oil pressure gauge,
along with the oil temperature gauge, mounted in a common circular instrument head. Since the instruments
are inseparable, if any one becomes defective, necessitating replacement, it will require replacing the com-
plete cluster. Refer to Table X-IV and Figure 10-8 for data required to calibrate the Warrior III oil temperature
gauge.
TABLE X-XII. TROUBLESHOOTING WARRIOR III ENGINE OIL TEMPERATURE GAUGE
TROUBLE
Instrument fails to read.
Excessive scale error.
Pointer fails to move as engine is
warmed up.
Dull or discolored markings.
10-51. REMOVAL AND REPLACEMENT. Refer to paragraph 10-72 of this section.
Added: February 28, 1995
CAUSE
Pointer loose on shaft.
Improper calibration adjustment.
Air in line or rough engine relief.
Bad oil pressure sender.
Bad instrument.
Loss of oil pressure.
Engine relief valve open.
Bad oil pressure sender.
CAUSE
Broken or damaged sensor.
Open wire.
Improper calibration adjustment
Broken or damaged sensor.
Open wire(s).
Age.
2C16
Island Enterprises
REMEDY
Replace instrument.
Replace instrument.
Disconnect line and fill with light
oil. Check for leaks. If trouble
persists, clean and adjust relief
valve.
Replace sender.
Replace instrument
Immediately shut down (stop)
engine.
Clean and check valve.
Replace sender.
REMEDY
Check engine unit.
Check wiring to instrument.
Replace instrument.
Check engine unit.
Check wiring to instrument.
Replace instrument.
INSTRUMENTS