PIPER AIRCRAFT CORPORATION SECTION 3
PA-28-161, WARRIOR II EMERGENCY PROCEDURES
ISSUED: AUGUST 13, 1982 REPORT: VB-1180
REVISED: MARCH 1, 2005 3-13
3.21 HIGH OIL TEMPERATURE
An abnormally high oil temperature indication may be caused by a low oil
level, an obstruction in the oil cooler, damaged or improper baffle seals, a
defective gauge, or other causes. Land as soon as practical at an appropriate
airport and have the cause investigated.
A steady, rapid rise in oil temperature is a sign of trouble. Land at the
nearest airport and let a mechanic investigate the problem. Watch the oil pressure
gauge for an accompanying loss of pressure.
3.23 ELECTRICAL FAILURES
NOTE
When operating with light electrical load and a
fully charged battery, the Alternator Inop. light
may illuminate due to minimal alternator output.
If the alternator is functional a slight increase in
electrical load should extinguish the Inop.
indication.
Loss of alternator output is detected through zero reading on the ammeter.
Before executing the following procedure, ensure that the reading is zero, and not
merely low, by actuating an electrically powered device, such as the landing
light. If no increase in the ammeter reading is noted, alternator failure can be
assumed.
The electrical load should be reduced as much as possible. Check the
alternator circuit breakers for a popped circuit.
The next step is to attempt to reset the overvoltage relay.This is accomplished
by moving the ALT switch to OFF for one second and then to ON. If the trouble
was caused by a momentary overvoltage condition (16.5 volts and up) this procedure
should return the ammeter to a normal reading.
If the ammeter continues to indicate ZERO output, or if the alternator will
not remain reset, turn off the ALT switch, maintain minimum electrical load and
land as soon as practical. All electrical load is being supplied by the battery.
3.24 ELECTRICAL OVERLOAD (Alternator over 20 amps above known
electrical load)
If abnormally high alternator output is observed (more than 20 amps above
known electrical load for the operating conditions), it may be caused by a low
battery, a battery fault or other abnormal electrical load. If the cause is a low
battery, the indication should begin to decrease toward normal within 5 minutes.
If the overload condition persists, attempt to reduce the load by turning off
non-essential equipment.
PIPER AIRCRAFT CORPORATION SECTION 3
PA-28-161, WARRIOR II EMERGENCY PROCEDURES
ISSUED: AUGUST 13, 1982 REPORT: VB-1180
REVISED: MARCH 1, 2005 3-13
3.21 HIGH OIL TEMPERATURE
An abnormally high oil temperature indication may be caused by a low oil
level, an obstruction in the oil cooler, damaged or improper baffle seals, a
defective gauge, or other causes. Land as soon as practical at an appropriate
airport and have the cause investigated.
A steady, rapid rise in oil temperature is a sign of trouble. Land at the
nearest airport and let a mechanic investigate the problem. Watch the oil pressure
gauge for an accompanying loss of pressure.
3.23 ELECTRICAL FAILURES
NOTE
When operating with light electrical load and a
fully charged battery, the Alternator Inop. light
may illuminate due to minimal alternator output.
If the alternator is functional a slight increase in
electrical load should extinguish the Inop.
indication.
Loss of alternator output is detected through zero reading on the ammeter.
Before executing the following procedure, ensure that the reading is zero, and not
merely low, by actuating an electrically powered device, such as the landing
light. If no increase in the ammeter reading is noted, alternator failure can be
assumed.
The electrical load should be reduced as much as possible. Check the
alternator circuit breakers for a popped circuit.
The next step is to attempt to reset the overvoltage relay.This is accomplished
by moving the ALT switch to OFF for one second and then to ON. If the trouble
was caused by a momentary overvoltage condition (16.5 volts and up) this procedure
should return the ammeter to a normal reading.
If the ammeter continues to indicate ZERO output, or if the alternator will
not remain reset, turn off the ALT switch, maintain minimum electrical load and
land as soon as practical. All electrical load is being supplied by the battery.
3.24 ELECTRICAL OVERLOAD (Alternator over 20 amps above known
electrical load)
If abnormally high alternator output is observed (more than 20 amps above
known electrical load for the operating conditions), it may be caused by a low
battery, a battery fault or other abnormal electrical load. If the cause is a low
battery, the indication should begin to decrease toward normal within 5 minutes.
If the overload condition persists, attempt to reduce the load by turning off
non-essential equipment.
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