Cummins/Onan 2100 Series — Flashing the Field (Self-Excited Generators Only)
Repair & overhaul · Exciter stator
For the Cummins/Onan 2100 Series, from the Cummins/Onan service manual.
Applies to: Cummins/Onan DGBB, Cummins/Onan DGBC, Cummins/Onan DGCA, Cummins/Onan DGCB, Cummins/Onan DGCG, Cummins/Onan DGDA, Cummins/Onan DGDB, Cummins/Onan DGDK, Cummins/Onan DGFA, Cummins/Onan DGFB, Cummins/Onan DGFC
Before you start
- Polarity must be correct.
Procedure
- Shut down generator and disconnect Base board.
- Use a diode to establish correct polarity and a 3 amp fuse to prevent over-excitation.
- Apply 110 to 220 VAC for one to two seconds to X and XX leads.
- Alternatively, apply 12 VDC battery for one to two seconds (+ to X, - to XX) with set running without load.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 110 to 220 VAC for 1 to 2 seconds
Full service-parts list: Cummins/Onan DGBB →, Cummins/Onan DGBC →, Cummins/Onan DGCA →, Cummins/Onan DGCB →, Cummins/Onan DGDA →, Cummins/Onan DGDB →, Cummins/Onan DGFA →, Cummins/Onan DGFB →, Cummins/Onan DGFC →
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.