CHEROKEE "E" SECTION IV
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. Reduce Electrical Load.
2. Alternator Circuit Breakers - Check
3. "Alt" Switch - Off (for 1 second), Then On
If the ammeter continues to indicate no output, or alternator will
not stay reset, turn off "Alt" 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, indicating ice removal. If no change in approximately
one minute, return carburetor heat to COLD. If the engine is still
rough, try steps below.
1. Mixture - Adjust for maximum smoothness. Engine will run
rough if too rich or too lean.
2. Electric Fuel Purrp - On
3. Fuel Selector - Change tanks to see if fuel contamination is the
problem.
4. Engine Gauges - Check for abnormal readings. If any gauge
readings are abnormal, proceed accordingly.
753 806 33
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