(b) Swing the plastic cover down until it rests against the
measuring window. Using the black dipstick, place a few drops of electrolyte
onto the exposed portion of the measuring window (Figure 26).
Figure 26. Electrolyte Sample.
(c) Point the tester toward a bright light source. When looking
through the eyepiece lens, you will see a rectangle with two calibrated scales.
The battery charge readings will appear on the left scale; antifreeze readings
on the right scale. The electrolyte sample will divide the rectangle with an
area of light and an area of shadow. Read the scale where they meet (Figure 2
7).
Figure 27. Battery State of Charge.
(d) Always perform a separate test for each battery cell. Test
the battery before adding water to the cells.
f. Control and Protective Devices. Electricity, when properly
controlled, is of vital importance to the operation of equipment. When it is
not properly controlled, it can become very dangerous and destructive. Such
devices as fuses, circuit breakers, and switches are connected into circuits to
control electrical force.
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OD0611
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