TM 5-3820-245-14&P
4-15
BATTERY AND BATTERY BOX
A.
Removal and Installation.
1.
Unlock battery box.
2.
Open the battery box cover. -
3.
Loosen and remove the two battery cables.
4.
Install the battery box and battery by reversing removal procedures.
5.
Lock the battery box when service is not required.
B.
Testing. The state of charge of the battery is indicated by the specific gravity of the battery solution. Check
the specific gravity with a hydrometer to determine the condition of the battery. If specific gravity is less
than 1.280, the battery should be recharged. If the battery does not hold a charge, it should be replaced. If
the difference is specific gravity between cells is more than 20-25%, the battery should be replaced.
C.
Service. Fill the battery to the ring with distilled water or clean rain water. The battery terminals should be
kept tight and free of corrosion. A solution of two tablespoons of baking soda to a pint of water makes an
excellent cleaning agent for corroded battery terminals and a dirty battery base. Apply the solution with a
paint brush or whisk broom and thoroughly flush the outside of the battery with clean water when finished.
Coat the battery terminals with a light grease or petroleum jelly to inhibit corrosion.
CAUTION
DO NOT ALLOW THE SODA SOLUTION TO ENTER THE
BATTERY CELLS. IT MAY CAUSE THE BATTERY TO BE
NEUTRALIZED.
D.
Inspection and Repair. Inspect the box and fastening hardware for damage. Use replacement fasteners as
needed. Straighten any dents using simple shop repair methods.
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