TM-9-2350-358-BD M109A6 Battlefield Damage Assessment and Repair Download
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TM 9-2350-358-BD SECTION X. BATTERIES 3-30. GENERAL This procedure provides methods to make temporary repairs to batteries that become cracked. The batteries store energy to start the vehicle engine and to supply energy for accessory systems without requiring engine operation. The batteries also act as a buffer for the electrical charging system. Without a battery in the circuit, the charging system will charge at its maximum rate and rapidly burn out. Battery configuration is a minimum of two 12-volt batteries connected in series to give a 24 V dc (Voltage direct current) output. 3-31. BATTERY, CRACKED This procedure provides methods to make temporary repairs to batteries that become cracked. Batteries can become cracked from vibration, impact, or freezing. Cracks can be repaired or sealed until replacements can be obtained. Batteries which are cracked from freezing must be inspected for internal shorts or broken plates. Most epoxy will not shrink and is resistant to acid. Limitations: • Power may be decreased. • Battery life may be shortened. Personnel/Time Required: • 1 soldier • Time determined by location and amount of damage. Materials/Tools: Sealer, permatex (item 54, Appendix C) References: • TM 9-2350-314-10 • TM 9-2350-314-20-1-1 Procedural Steps: 1. Disconnect negative battery link. 2. Remove battery if necessary WARNING Adhesives, solvents, and sealing compounds can burn easily, can give off harmful vapors, and are harmful to skin and clothing. To avoid injury or death, keep away from open fire and use in well- ventilated area. If adhesive, solvent, or sealing compound gets on skin or clothing, wash immediately with soap and water. 3. Spread sealer generously over crack and allow to harden. 4. Refill battery to proper level with water and check for leaks. 3-39