Komatsu WA100M-7, Operation And Maintenance Manual

Page: 191 / 304

Troubleshooting 4.2 Starting the engine with booster cables
WA80M-7, WA100M-7 – VENAM03001
4-7
4.2 Starting the engine with booster cables
To start the engine with booster cables, proceed as follows:
Precautions for connecting and disconnecting the booster
cables
WARNING
 Never touch the positive (+) terminal with the negative (-) ter-
minal when connecting the cables.
 Always wear protective goggles when starting the engine with
booster cables.
 Ensure that the operational and the defective machine are not
touching each another. This avoids spark formation near the
battery that can ignite the escaping hydrogen gas and lead to
severe injuries or damages.
 Ensure that no errors occur during the connection of the
jumper cables. The last connection is made to the engine
block of the defective machine; spark formation occurs here.
Therefore perform the connection at a spot that is as far away
as possible from the battery.
 Be careful when disconnecting the cable from the started
machine. Ensure that the cable ends do not come in contact
with one another or the machine to avoid a hydrogen explo-
sion.
NOTICE

The cross section of the jumper cable and the cable terminals
have to be selected according to the battery size.

The batteries of the operational and defective machine must
have the same capacity.

Inspect the cables and cable terminals for damages or corro-
sion.

Ensure that the cables and cable terminals are securely fas-
tened.

For machines with battery main switch
When you connect one machine to another machine to start
it with booster cables, turn off the battery main switch of the
defective machine and pull out the key for the battery main
switch to prevent damage to the electrical systems of the
machine.
WRONG