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  TM 11-6140-203-14-4&P
d. Remove vent caps and replace with ones that
(1) Clean the battery (para 4-13b) and tighten
have been previously cleaned and tested (para 5-12).
terminal studs, using the proper torque valves (para 4-
e. Remove terminal links, clean off all corrosion
16c).
preventive compound, then lightly polish contact
(2) Discharge the storage battery (para 5-6c).
surfaces on both links and cells with fine emery cloth or
(3) Remove and clean terminal links (para 5-
sandpaper. Replace terminal links following the layout
6e).
(5) After charge, allow the battery to rest for
f. When battery has been reassembled, charge the
30 minutes. Remove the vent caps. Using distilled
battery in accordance with one of the procedures given
water, adjust the electrolyte level to 1/4 inch above the
in paragraph 5-4f. Check cell voltages for uniformity.
top of the plates (para 5-5). Replace vent caps.
During last 10-20 percent of charge, remove fillercaps
(6) Test the performance of the battery as
and check for a visible electrolyte level Add small
given in paragraph 5-4g.
amounts of distilled water only to those cells that are
b. Corroded Terminals.
If connections are
excessively low. Replace the vent caps.
corroded or dirty proceed as follows:
g. Test the capacity of the battery as given in
(1) Clean the battery (para 4-13b).
paragraphs 5-4g(1).
(2) Discharge the battery (para 5-6c).
h. Recharge battery in accordance with final
(3) Remove, clean and replace terminal links
charge procedure of paragraph 5-4g(2).
and cell terminals (para 5-7e).
i. Allow battery to rest for 30 minutes before
(4) Charge (para 5-4f).
adding distilled water to adjust the electrolyte level
(5) After charge allow the battery to rest for 30
Follow procedures in paragraph 5-5.
minutes Remove the vent caps using distilled water,
j. Perform electrical leakage test of paragraph 4-
adjust the electrolyte level to 1/4 inch above the top of
10.
the plates (para 5-5). Replace vent caps.
k. Reapply corrosion preventive compounds where
(6) Test the performance of the battery is
required. Check to see that low voltage tap is on proper
given in paragraph 5-4g.
c Electrical Leakage Test. Using the multimeter
position (para 4-12) for expected ambient temperature.
l Return battery to service or stock. Maintain
perform the electrical leakage test as described in
battery sets for each vehicle together.
d. Reverse Polarity Position If a cell has been
NOTE
installed in reverse polarity as determined when
BB-693/U
batteries
containing
performing an individual cell voltage test, proceed as
cellophane separated cells should not
follows:
be used in a set with BB-693A/U
(1) Discharge the battery (para 5-6c).
batteries containing the polyolefin
(2) Remove and reinstall the cell in the
separated BB-600A/A cells.
battery.
5-7.
Troubleshooting
(3) Charge the battery (para 5-4f).
The following procedures will aid in troubleshooting a
(4) Capacity test the battery (para 5-4g).
defective battery (table 5-12). Visually inspect the
battery to determine whether the trouble is caused by
aid in isolating troubles that occur in the battery. Before
loose connections (a below), corroded connections (b
following the procedures outlined in the troubleshooting
below), electrical leakage (c below), or an incorrectly
table, perform the procedures given in a through d
installed cell (d below).
above
a. Loose Connections. If connections are loose,
proceed as follows:
Table 5-2. Troubleshooting
Condition
Probable trouble
Corrective action
Electrolyte spewage during
a.
High charge current or high
a.
Reduce charging current,
charge.
ambient temperature during
check heater thermostats.
charge
b.
Withdraw excessive
b.
Excessive electrolyte.
electrolyte
c.
Defective cell or cells.
c.
Replace defective cells as
necessary.
d.
Cell installed in reverse
d.
Reinstall cell correctly.
polarity
e.
Extend operations with low
e.
Minimize use of low rate
rate of fire.
firing, or perform quarterly
service more frequently.
5-13
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