MAINTENANCE MAINTENANCE PROCEDURE 2. If the electrolyte has dropped more than half way between the U.L and L.L range, remove cap (2) immediately and add distilled water (such as commercially available distilled water for batteries) up to the U. L line. 3. After adding distilled water, tighten cap (2) securely. REMARK If distilled water is added to above the U.L. line, use a syringe to lower the level to the U.L. line. Neutralize the removed fluid with baking soda (sodium bicarbonate), then flush it away with a large amount of water or consult your Komatsu distributor or battery maker. 4-53