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3.10.1 Clean the Battery
Clean the battery and cables and tighten the battery terminals according to the service schedule recommendations. Clean the
battery by wiping it with a damp cloth. Keep the electrical connections dry and tight.
If corrosion exists, disconnect the cables from the battery and remove the corrosion with a wire brush. Clean the battery and
cables with a solution of baking soda and water. Do not allow the cleaning solution to enter battery cells. Flush the battery and
cables with clean water and wipe the battery with a dry cloth.
After reconnecting the battery cables, coat the terminals with petroleum jelly, silicon grease, or other nonconductive grease.
3.10.2 Electrolyte Level Inspection
Check the electrolyte level and specific gravity of batteries that have filler caps. Maintenance-free batteries do not require
electrolyte level checking or specific gravity testing.
Check the electrolyte level at the specified interval. Remove the filler caps and verify that the electrolyte level reaches the bottom
of each filler hole. See Figure 52. Refill as necessary with distilled water. Do not add fresh electrolyte. Tighten the filler caps.
After adding water during freezing temperatures, run the generator set 20-30 minutes to mix the electrolyte and the water to
prevent battery damage from freezing.
Figure 52 Battery Electrolyte Level Inspection
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