Cummins/Onan — Checking Battery Electrolyte Level
Maintenance
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DGBB, Cummins/Onan DGBC, Cummins/Onan DGCA, Cummins/Onan DGCB, Cummins/Onan DGCG, Cummins/Onan DGFA, Cummins/Onan DGFB, Cummins/Onan DGFC, Cummins/Onan 4B3.9 engine, Cummins/Onan 6CTA8.3 engine, Cummins/Onan 6CTAA8.3 engine
Before you start
- Do not add water in freezing weather unless the engine will run two to three hours to mix water and electrolyte.
Procedure
- Check the level of the electrolyte at least every 200 hours of operation.
- Fill the battery cells to the bottom of the filler neck.
- If cells are low on water, add distilled water and recharge.
- If one cell is low, check the case for leaks.
Specs & values
- Check at least every 200 hours of operation
Full service-parts list: Cummins/Onan DGBB →, Cummins/Onan DGBC →, Cummins/Onan DGCA →, Cummins/Onan DGCB →, Cummins/Onan DGFA →, Cummins/Onan DGFB →, Cummins/Onan DGFC →
Source: Cummins/Onan operator's 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.