Cummins/Onan — Cleaning Batteries
Maintenance
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan GGPA, Cummins/Onan GGPB, Cummins/Onan GGPC, General Motors GM 5.0 L engine
Before you start
- Electrolyte is a dilute sulfuric acid that is harmful to the skin and eyes. Wear goggles and protective rubber gloves and apron.
Procedure
- Keep the batteries clean by wiping them with a damp cloth whenever dirt appears excessive.
- If corrosion is present around the terminal connections, remove battery cables.
- Wash the terminals with a solution consisting of 1/4 pound of baking soda added to 1 quart of water.
- Be sure the vent plugs are tight to prevent cleaning solution from entering the cells.
- After cleaning, flush the outside of the battery and surrounding areas with clean water.
- Coat the terminals with a light application of petroleum jelly or non-conductive grease to retard corrosion.
Specs & values
- Fully charged battery corrected specific gravity 1.260; charge if below 1.215
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.