Table 5-3. Direct and General Support Maintenance Troubleshooting (Continued)
TEST OR INSPECTION
ENGINE DOES NOT START BUT TURNS OVER (Continued)
If the meter reads 11.5 to 12 volts the battery is ok. Go to Step 5.
If the meter reads less than 11.5 volts, go to Step 6e.
b. Check the specific gravity of the electrolyte in the battery. Use a hydrometer.
The electrolyte level must be kept above the top of the battery plates.
DO NOT overfill the battery. The electrolyte should not overflow onto the battery when the cell
caps are set in the battery.
Use distilled water or a good grade drinking water (excluding mineral water).
Figure 5-28. Specific Gravity Test
Remove the cell caps and check the electrolyte level. Add distilled water if necessary.
Check the specific gravity.
If the specific gravity is between 1.250 and 1.280 the battery cell being tested is ok. Go to Step
If the specific gravity is between 1.225 and 1.250 the cell being tested is still in fair condition. Go
to Step 5.
If the specific gravity is below 1.150 in any one cell, replace the battery and go to Step 4d.