Service Manual

44
Issue:
Possible Cause:
Solution:
Check:
Stator
Winding
Overheating
Too much load Reduce the load on the generator.
Start the
engine and
let it reach
operating
temperature.
Check the
stator
temperature.
Vent blocked Check the vents. Clean as needed.
Open circuit in stator
winding
Check the windings for an open circuit. Repair or
replace as needed.
Stator winding
grounded
Check for a winding that is shorted to ground. Repair or
replace as needed.
If the stator winding is
still overheating:
Rebuild or replace the generator, or consider replacing the unit.
Rotor
Winding
Overheating
Low engine speed Check the engine speed. Adjust if needed.
Start the
engine and
let it reach
operating
temperature.
Check the
rotor
temperature.
Airway blocked
Ensure that all of the air passages are not blocked.
Clean the generator if needed.
Open circuit in rotor
winding
Check the windings for an open circuit. Repair or
replace as needed.
Rotor winding
grounded
Check for a winding that is shorted to ground. Repair or
replace as needed.
Friction between the
stator and rotor
Look for signs of wear on the rotor core. Remove any
high spots.
If the rotor winding is
still overheating:
Rebuild the generator, replace the generator, or consider replacing the
unit.