Komatsu D475A-5E0 Operation & Maintenance Manual page 236

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OPERATION
CONNECTING THE BOOSTER CABLES
Keep the starting switch of the normal machine and failed machine in OFF position.
Connect the booster cable as follows, in the order of the numbers marked in the figure.
1. Connect the clip of booster cable (A) to the positive (+) terminal
of battery (C) on the failed machine.
2. Connect the clip at the other end of booster cable (A) to the
positive (+) terminal of battery (D) on the normal machine.
3. Connect the clip of booster cable (B) to the negative (-) terminal
of battery (D) on the normal machine.
4. If the machine is equipped with a battery isolator switch, turn
the battery isolator switch on the problem machine to ON
position.
5. Connect the clip at the other end of booster cable (B) to engine
block (E) on the problem machine.
STARTING THE ENGINE
Always check that the work equipment lock lever and Parking brake lever is set to LOCK position, regardless of whether the
machine is working normally or has failed. Check also that all the control levers are in HOLD or NEUTRAL position.
1. Make sure the clips are firmly connected to the battery terminals.
2. Start engine of the normal machine and run it at High idle (MAX).
3. Turn the starting switch of the failed machine to START position and start the engine.
If the engine doesn't start at first, try again after 2 minutes or so.
DISCONNECTING THE BOOSTER CABLES
After the engine has started, disconnect the booster cables in the reverse of the order in which they were connected.
1. Remove the clip of booster cable (B) from engine block (E) on
the problem machine.
2. Remove the clip of booster cable (B) from the negative (-)
terminal of battery (D) on the normal machine.
3. Remove the clip of booster cable (A) from the positive (+)
terminal of battery (D) on the normal machine.
4. Remove the clip of booster cable (A) from the positive (+)
terminal of battery (C) on the failed machine.
WARNING
TROUBLESHOOTING
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