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December 2019W11/W12/W13 | Operation manual
10.8 Starting aids/external start
Explosion hazard!
Batteries emit explosive gases! Avoid smoking, fire or naked flames near batteries. Short-circuit hazard! Ensure that
the external machine and the wheel loader do not touch each other! Do not externally start the wheel loader if the
battery is defective or frozen. Do not connect two batteries in series! Use only booster batteries with the same
voltage! Only use tested jumper cables with insulated terminal tongs and sufficient cable cross-section! Locate the
jumper cables so that they can not be caught by rotating engine parts!
Before using a starting aid, check that the wheel loader battery is functional:
1. Switch off all electrical loads on the wheel loader.
2. Switch the ignition key to position 1 (operation). The warning lights should now be on.
3. If the warning lights do not go on, the battery is defective. In this case, the wheel loader may not be started.
Install a functional battery.
Preparation
1. Switch off all electrical loads on the wheel loader.
2. Switch the ignition key to position 0.
3. Move the external machine (charged battery) to the wheel loader so that they do not touch, but you can reach
the batteries with the jumper cable.
4. Switch off all electrical loads on the external machine and switch off the engine.
Connect the jumper cables (in the correct sequence)
1. Connect the red jumper cable to the positive terminal of the drained battery.
2. Connect the red jumper cable to the positive terminal of the charged battery.
3. Connect the black jumper cable to the negative terminal of the charged battery.
4. Connect the black jumper cable to the negative terminal of the drained battery.
Start the engines
1. Start the engine on the external machine and allow it to run at increased speed.
2. Start the wheel loader's engine.
3. If the wheel loader's engine does not start after 15 seconds, wait one minute before making a new attempt.
4. If the engine starts, allow both engines to run at idle speed for a further two minutes with the jumper cables
connected.
Disconnect the jumper cables (in the correct sequence)
1. First, disconnect the black jumper cable from the negative terminal of the drained battery and then from the
negative terminal of the charged battery.
2. Disconnect the red jumper cable from the positive terminal of the charged battery first, and then from the
positive terminal of the drained battery.
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