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MAINTENANCE
CHECKING BATTERY SPECIFIC GRAVITY
Use a hydrometer to check the battery specific
gravity.
Battery Check
CHECKING GRAVITY
A. Hydrometer
B. Battery
NOTE: Do not take readings immediately after
adding distilled water, if the water and acid are not
thoroughly mixed, the reading may not be accurate.
Check the hydrometer readings against this chart.
SPECIFIC GRAVITY
°
°
@ 80
F (27
C)
1.265
1.225
1.190
1.155
1.120
NOTE: If the readings are taken when the battery
electrolyte is any temperature other than 80°F
(27°C), the reading must be temperature corrected.
To find the corrected specific gravity reading when
the temperature of the battery electrolyte is other
than 80°F (27°): Add (+) to the specific gravity
reading 0.004 (4 points), for each 10°F (6°C) above
80° (27°C).
Subtract (-) from the specific reading 0.004 (4
points), for each 10°F (6°C) below 80°F (27 °C).
TO CHARGE THE BATTERIES
When servicing machine, avoid contact with
battery acid.
Batteries emit hydrogen gas. Explosion or fire
can result. Keep sparks and open flame away.
Keep covers open when charging.
4-4
BATTERY CONDITION
100% CHARGED
75% CHARGED
50% CHARGED
25% CHARGED
DISCHARGED
SCX364 86037150 1/17/07
Wear eye protection and protective clothing
when working with batteries.
Charge batteries in a well ventilated area. Leave
the battery cover open.
Use a 24 volt, 18 amp maximum output or 25 amp
(depending on the size of the batteries), DC charger
which will automatically shut off when the batteries
are fully charged.
1. Stop the machine in a clean, well-ventilated area
next to the charger.
2. Turn "OFF" machine.
FOR SAFETY: Before leaving or servicing
machine; stop on level surface, turn off machine
and remove key.
3. Raise the battery cover.
Batteries emit hydrogen gas. Explosion or fire
can result. Keep sparks and open flame away.
Keep covers open when charging.
4. Check the electrolyte level in each battery cell.
Before charging, add just enough distilled water
to cover the plates. After charging is complete,
add just enough distilled water to bring up the
level to the indicator ring. If the water level is
too high before charging, normal expansion rate
of the electrolyte may cause an overflow.
Resulting in a loss of battery acid balance and
damage the machine.
5. Replace the battery caps, and leave them in
place while charging.
6. Unplug the battery connector from the machine.
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