Figure 3-55 (2)Continued.
A specific gravity of 1.250 will permit the battery to
withstand temperatures as low as -65F.
The battery compartment located
below the radiator contains four 12 volt batteries
d. Water : Addition. The electrolyte level should
connected in series-parallel to provide 24 volt current.
be maintained 3/8 inch above the separators or
b. Removal and installation. Refer to paragraph 2-
insulators by addition of distilled water or "approved
4 for removal and installation of lotteries.
water" (water free from impurities by analysis). Do not
c. Testing. The battery should be tested with a
overfill or under fill the cells of the battery as either has
hydrometer and kept to a specific gravity of 1.250 or
a detrimental effect on battery life.
above. Always test a battery for degree of charge
Note. Use of a mirror is recommended when
before adding water. The specific gravity between the
checking electrolyte level in batteries.
cells should be within .025. A dangerously low point of
e. Charging. The charging rate is correct when the
charge indicated by a hydrometer reading of 1.150 or
battery maintains a minimum specific gravity of 1.250
less will permit the battery to freeze at temperatures
and does not require the addition of more than 1 ounce
only a few degrees below the freezing point of water.
of water per cell per week or 50 service hours.
Section XIII. ENGINE CONTROLS AND INSTRUMENTS
removal of the fuel level gage, coolant temperature
remove the battery-charging ammeter.
gage, and the engine oil pressure gage.
3-64. Time Totalizing Meter
3-66. Engine Control Switches
remove the totalizing meter.
removal of the engine primer switch and the engine