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HIGH OIL TEMPERATURE
An abnormally high oil temperature indication may be caused by a low oil level,
an obstruction of 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.
ALTERNATOR FAILURE
Loss of alternator output is detected through a zero reading on the ammeter.
Before executing the following procedure, insure 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.
1. Electrical Load – Reduce (turn off all unnecessary electrical equipment)
2. 5 ampere field breaker – Check | Reset
3. 60 ampere output breaker – Check | Reset
If neither circuit breakers are open:
4. "BATTERY" Switch – Off (for 30 seconds to reset the overvoltage relay)
If the ammeter continues to indicate no output, or alternator will not stay reset,
turn off "BATTERY" switch, maintain minimum electrical load and land as soon
as practical. All electrical load is being supplied by the battery.
ENGINE ROUGHNESS
Engine roughness is usually due to carburetor icing, which is indicated by a drop
in RPM, and may be accompanied by a slight loss of airspeed or altitude. If too
much ice is allowed to accumulate, restoration of full power may not be
possible; therefore, prompt action is required.
Carburetor Heat - On (See Note) RPM will decrease slightly and roughness will
increase. Wait for a decrease in engine roughness or an increase in RPM,
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