Komatsu PC30MR-5 Operation & Maintenance Manual page 252

TROUBLES AND ACTIONS
START ENGINE WITH JUMPER CABLES
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• Never connect the positive (+) terminal with negative
(-) terminal when connecting the cables.
• Always wear protective eyeglasses and rubber gloves
when starting the engine by using the jumper cable.
• Do not bring the normal machine into contact with the
failed machine.
The sparks caused near the battery could ignite the
hydrogen gas generated from the battery, so be care-
ful not to let it happen.
• Connect the correct jumper cables correctly.
In the last connection (to the upper structure frame), a
spark will be caused, connect the cable to a spot as far
away from the battery as possible.
(However, do not connect to the work equipment since
the current does not flow well through it.)
• Do not bring the clips in contact with other clips or
with the machine when disconnecting the jumper ca-
ble.
NOTICE
• The sizes of the jumper cables and clips should be suitable for the battery size.
• The battery of the normal machine must be the same capacity as that of the failed machine.
• Check the cables and clips for damage or corrosion.
• Make sure that the cables and clips are firmly connected.
• Check that the lock levers of both machines are in LOCK position.
• Control levers must be in NEUTRAL position.
• To prevent damage of the electric devices of the failed machine, turn the starting switch of the failed
machine to OFF position, check that the system operating lamp is not lit, and then disconnect the
quick release battery terminal (-) before connecting the jumper cables.
PROCEDURE FOR CONNECTING JUMPER CABLE
Keep the starting switch of the normal machine and failed machine in OFF position. Connect the jumper cables
as follows, in the order of the numbers marked in the figure.
1.
Connect the clip of jumper cable (A) to the positive (+) ter-
minal of battery (C) on the failed machine.
2.
Connect the clip at the other end of jumper cable (A) to the
positive (+) terminal of battery (D) on the normal machine.
3.
Connect the clip of jumper cable (B) to the negative (-) ter-
minal of battery (D) on the normal machine.
4.
Connect the quick release battery terminal (-) to the (-) ter-
minal of the battery (C) of the failed machine.
5.
Connect the other clip of jumper cable (B) to upper struc-
ture frame (E) of the failed machine.
METHOD FOR STARTING ENGINE
1.
Check both of normal machine and failed machine that the lock lever is set to LOCK position.
Check also that all the control levers are in NEUTRAL position.
2.
Make sure the clips are firmly connected to the battery terminals.
3-186
WARNING
WENAM00150
OPERATION