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216
Tests
Test 16: Generator End Troubleshooting (Page 1 of 2)
A: Exciter Wire Test
Causes
Troubleshooting
Fixes
• Faulty exciter wires.
• See Test A.
• Replace generator end.
• Faulty motor stator.
• See Test B.
• Replace generator end.
• Faulty voltage regulator.
• See Test C.
• Replace voltage regulator.
• Faulty surge suppressor.
• See Test D.
• Replace surge suppressor or
replace generator.
• Faulty diodes.
• See Test E.
• Replace all diodes or replace
generator.
1
5
2
3
4
1. Remove the 4 screws from the top of the generator cover with an 8mm wrench.
2. Note the position of each of the 4 wires connected to the voltage regulator then disconnect.
3. Wire positions shown on voltage regulator.
4. Connect an ohm meter to wires F2(-) and F1(+). If the resistance is NOT between 15-25Ω ohms,
replace the generator end.
5. If the resistance is in range, leave one lead connected and connect the other to 1 of the
4 grounding bolts. The meter should show an open. If the resistance is low (less than 10kΩ) then the
exciter is shorted and the generator end will need to be replaced.
Use a flat head
screwdriver to
adjust voltage