TM-9-2350-358-BD
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6
TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE
MARCH 1994
TM-9-2350-358-BD - Page 84 of 343
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
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