Komatsu PC130-6K 2001 Operation & Maintenance Manual page 152

Hydraulic excavator
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16. TROUBLESHOOTING
16.6.2 PRECAUTIONS FOR CHARGING BATTERY
CHARGING BATTERY WHEN MOUNTED ON MACHINE
Before charging, disconnect the cable from th negative - - - - - terminal of
the battery. Otherwise an unusual high voltage will damage the alter-
nator.
While charging the battery, remove all battery plugs for satisfactory
ventilation.
To avoid gasexplosions, do not bring fire or sparks near the battery.
If the electrolyte temperature exceeds 45°C, stop charging for a
while.
Turn off the charging as soon as the battery is charging.
Overcharging the battery may cause the following:
1.
Overcharging the battery
2.
Decreasing the quantity of electrolyte
3.
Damaging the electrode plate
Do not mix the cables (positive + + + + + to negative - - - - - or negative - - - - - to
positive + + + + + , as it will damage the alternator.
When performing any service to the battery besides checking the
elecrolyte level or measuring the specific gravity, disconnect cables
from the battery.
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