Komatsu WA470-6 2006, Operation & Maintenance Manual

Page: 244 / 392

3.7 Troubleshooting Operation
3-172
WA470-6H – VEAM946100
Connecting the booster cable
Keep the starting switch of the normal machine and problem
machine at the OFF position.
Connect the booster cable as follows, in the order of the num-
bers marked in the diagram.
1. Connect one clip of booster cable (A) to the positive (+) ter-
minal of the problem machine.
2. Connect the other clip of booster cable (A) to the positive (+)
terminal of the normal machine.
3. Connect one clip of booster cable (B) to the negative (-) ter-
minal of the normal machine.
4. Connect the other clip of booster cable (B) to the engine
block of the problem machine.
Starting engine
WARNING
Always check that the safety lock lever is set to the LOCK posi-
tion, regardless of whether the machine is working normally or
has failed. Check also that all the control levers are at the HOLD
or neutral position.
1. Make sure the clips are firmly connected to the battery termi-
nals.
2. Start the engine of the normal machine and keep it to run at
high idling speed.
3. Turn the starting switch of the problem machine to the
START position and start the engine.
If the engine doesn't start at first, wait for at least 2 minutes
before trying again.
Disconnecting the booster cable
After the engine has started, disconnect the booster cables in
the reverse of the order in which they were connected.
1. Remove one clip of booster cable (B) from the engine block
of the problem machine.
2. Remove the other clip of booster cable (B) from the negative
(-) terminal of the normal machine.
3. Remove one clip of booster cable (A) from the positive (+)
terminal of the normal machine.
4. Remove the other clip of booster cable (A) from the positive
(+) terminal of the problem machine.
GK032232
1 2
3
4
A
B
Engine block of
the problem Machine
Battery of the Battery of the
problem machine normal machine
GK032232
1
2
3
4
A
B
Engine block of
the problem Machine
Battery of the Battery of the
problem machine normal machine