Starting With Booster Cables - Komatsu PC27R-8 Operation & Maintenance Manual

3.15.4.1 STARTING WITH BOOSTER CABLES

DANGER
When starting the engine with the aid of another machine, connect the batteries in parallel.
When connecting the cables, avoid any contact between the positive cable (+) and the negative cable (–).
When starting the engine with booster cables, always wear safety goggles.
Take care to avoid any contact between the machine to be started and the machine used as starting aid,
in order to avoid sparks and therefore the explosion of the hydrogen produced by the batteries.
The explosion of the battery causes serious damage and injuries.
Take care not to invert the cables and connect the earth cable (–) last, as far from the battery as possi-
ble.
Remove the cables with great care; prevent the cables disconnected from the battery from touching
other parts of the machine, in order to avoid the explosion of the hydrogen.
IMPORTANT
The cables and pliers must be suitable for the current load that must be transferred.
The battery to be used for the starting must have greater capacity or at least the same capacity as the
battery of the machine to be started.
Make sure that the cables and pliers are neither corroded, nor damaged.
Make sure that the pliers hold the terminals firmly.
CONNECTING THE CABLES AND STARTING THE ENGINE
1 - Make sure that the ignition key is in position « ».
2 - Connect the positive poles (+) of the two batteries with each
other (A).
3 - Connect the cable of the negative terminal (–) of the charged
battery to the earth block of the machine to be started (B).
4 - Start the engine of the machine that supplies current and in-
crease its speed.
5 - Start the engine of the machine that does not work. (See
"3.6.2 STARTING THE ENGINE").
REMOVING THE CABLES
When the engine has started, remove the cables in the reverse
order with respect to their connection.
1 - Disconnect the negative cable (–) from the earth block of the
engine that has been started and then from the battery (B).
2 - Disconnect the positive cable (+) first from the battery used
for the starting and then from the exhausted battery (A).
TROUBLESHOOTING
RWA00740
A
2 1
Charged
battery
B
2
RWA00850
A
1 2
Charged
battery
B
1
1
Spent
battery
Engine block
to be starded
2
Spent
battery
Engine motor
to be started
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