- Turn off the genset.
- Turn the remote voltage adjust potentiometer in a fully counterclockwise direction.
- Disconnect the wires from terminals 6A and 7.
- Measure the resistance of the remote voltage adjust potentiometer between wires 6A and 7.
- Turn the remote voltage adjust potentiometer in a fully clockwise direction.
- Measure the resistance between wires 6A and 7.
Expected Result:
Resistance between wires 6A and 7 should be less than 5 Ohm when the remote voltage adjust potentiometer is turned in a fully counterclockwise direction. Resistance should be between 9.5 K Ohm and 10.5 K Ohm when the remote voltage adjust potentiometer is turned in a fully clockwise direction.
Results:
- YES - Resistance lies within specified range. Proceed to test step 2.
- NO - Resistance is outside specified range.
Repair: Check if the wires are broken. Check for the wires that are shorted to ground. Check for bad solder joints. Check for adequate wire size to the remote voltage adjust potentiometer.
STOP
Test Step 2. CHECK THE REMOTE VOLTAGE ADJUST POTENTIOMETER
- Reconnect the remote voltage adjust potentiometer to the voltage regulator.
- Start the genset.
- Run the genset at no load.
Expected Result:
The generator voltage lies within specified range.
Results:
- YES - The problem has been eliminated.
STOP
- NO - The problem still exists.
Repair: Replace the remote voltage adjust potentiometer. Refer to the Testing and Adjusting, "Wiring Diagrams".
STOP