TM-9-2320-387-10 HMMWV Operator Manual Download
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TM 9-2320-387-10 3-12 3-12. SERVICING BATTERIES a. Unhook latches (6) and remove companion seat (1) from battery box (9). WARNING Do not perform battery system checks or inspections while smoking or near fire, flames, or sparks, especially if the caps are off. Batteries may explode, causing damage to vehicle and injury or death to personnel. b. Check electrolyte level. (1) Remove all battery filler caps (2) and check electrolyte level. If electrolyte level is below ledge in battery filler opening, add distilled water (appendix D, item 7). (2) A battery that is continually in need of electrolyte may indicate an improperly adjusted charging system. Notify unit maintenance if problem continues. (3) Inspect vented battery filler caps (2) to ensure that vents are clear, unobstructed, and permit escape of battery gases. Clean vents if obstructed; replace caps (2) if damaged. (4) Install filler caps (2). c. Inspect all battery compartment components, including terminal clamps (5), battery cables (3), battery holddowns (8), and shunt (4) for corrosion, damage, or looseness. Inspect terminal boots (7), if installed. Notify unit maintenance if any of these problems exist. d. Ensure that battery terminal clamps (5) have a light coat of lubricating oil for corrosion protection (appendix D, item 23). e. Install companion seat (1) and secure to battery box (9) with latches (6). f. Refer to TM 9-6140-200-14 for additional information.