Komatsu WA500-6H, Operation & Maintenance Manual

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Operation 3.7 Troubleshooting
WA500-6H – VEAM430100
3-179
3.7.3 If battery is discharged
WARNING
z It is dangerous to charge a battery when mounted on a
machine. Make sure that it is dismounted before charging.
z When checking or handling the battery, stop the engine and
turn the starting switch key to the OFF position.
z The battery generates hydrogen gas, so there is a hazard of
explosion. Do not bring lighted cigarettes near the battery, or
do anything that will cause sparks.
z Battery electrolyte is dilute sulphuric acid, and it will attack
your clothes and skin. If it gets on your clothes or on your
skin, immediately wash it off with a large amount of water. If
it gets in your eyes, wash it out with fresh water and consult
a doctor.
z
When handling batteries, always wear protective goggles
and rubber gloves.
z
When removing the battery, first disconnect the cable from
the ground (normally the negative (-) terminal). When
installing, install the positive (+) terminal first.
If a tool touches the positive terminal and the chassis, there
is danger that it will cause a spark, so be extremely careful.
z
If the terminals are loose, there is danger that the defective
contact may generate sparks that will cause an explosion.
z
When removing or installing the terminals, check which is
the positive (+) terminal and which is the negative (-) termi-
nal.
Removal and installation of battery
1. Before removing battery, remove the ground cable (normally
connected to the negetive (-) terminal). If any tool touches
between the positive terminal and the chassis, there is dan-
ger of sparks being generated. Loosen the nuts of terminal
and remove the wires from the battery.
2. After installing the battery, fix it with the battery fitting
securely.
Tightening torque: 2 to 2.9 N·m
(0.2 to 0.3 kgf·m, 1.4 to 2.2 lbft)
3. When installing the battery, connect the ground cable last.
Insert the hole of the terminal on the battery and tighten the
nut.
Tightening torque: 5.9 to 9.8 N·m
(0.6 to 1.0 kgf·m, 4.3 to 7.2 lbft)
REMARK
The batteries are on both sides at the rear of the machine. The
battery used for the ground is on the right side of the machine.
GK032229
When removing, disconnect the cable
from the ground (-) terminal first.
When installing, connect the cable
to the positive (+) terminal first.