Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
TEST OR INSPECTION
ENGINE DOES NOT TURN OVER (Continued)
(2) Connect the positive (+) meter lead to the positive (+) battery terminal and the negative (-) meter
lead to the negative battery terminal.
If the meter reads between 11.5 and 12 volts, the battery is ok. Go to Step 3.
If the meter reads less than 11. 5 volts, go to Step 2b.
b. Check the electrolyte in the battery. Use a hydrometer to check the specific gravity.
The electrolyte level must be kept above the plates in the battery.
DO NOT overfill the battery. The electrolyte should not overflow onto the battery cover when the
cell covers are placed over the cells.
Use distilled water or a good grade drinking water (excluding mineral water).
Figure 5-53. Specific Gravity Test
Remove the cell covers and check the electrolyte level. Add distilled water if the level is below
the top of the plates.
Check the specific gravity.
If the specific gravity is between 1.250 and 1.280, the cells are ok. Go to Step 3.
If the specific gravity is between 1.225 and 1.250, the cells are in fair condition. Go to Step 3.
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