Komatsu PC1250-11, Original Instructions Manual

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START ENGINE WITH JUMPER CABLES
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WARNING
• When connecting the cables, never contact the posi-
tive (+) and negative (-) terminals.
• Always wear protective eyeglasses and rubber gloves
when starting the engine by using the jumper cable.
• Be careful not to let the normal machine and failed ma-
chine contact each other.
The sparks caused near the battery could ignite the
hydrogen gas generated from the battery, so be care-
ful not to let it happen.
• Make sure that there is no mistake in the jumper cable
connections. 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 possi-
ble. (However, do not connect to the work equipment
since the current does not flow well through it.)
• When disconnecting the jumper cable, take care not to
bring the clips in contact with each other or with the
machine.
• Do not ground by contact between the track shoes, be-
cause it may cause a spark in the swivel joint, etc.
NOTICE
• The starting system for this machine uses 24 V. Accordingly, the normal machine must be equipped
with a 24 V battery.
• 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 and parking brake levers (if equipped) of both machine are in LOCK posi-
tion.
• Check that each lever is 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, and then turn the battery disconnect switch key to OFF position before
connecting the jumper cables.
PROCEDURE FOR CONNECTING JUMPER CABLE
Turn the starting switch and battery disconnect switch of the failed machine, and the starting switch of the nor-
mal machine to OFF position.
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.
Turn the battery disconnect switch (S) of the failed ma-
chine to ON position.
5.
Connect the other clip of jumper cable (B) to the revolving
frame (E) of the failed machine.
OPERATION TROUBLES AND ACTIONS
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