Cummins/Onan — Troubleshoot − High/Low AC Output (Genset)
Testing & diagnosis · Generator / voltage regulator
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA
Procedure
- Check broken or loose wires
- Check voltage regulator
- Check engine speed
- Check voltage adjustment pot setting
- Check output lead wiring configuration
- Perform checks in step 01
- Check main rotor
- Check main stator
Specs & values
- SRT 00−0AD
- Step 01 time 0.5 h
- Step 02 time 1.0 h
Full service-parts list: Cummins/Onan HDKA →
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.