Driving modes
6.3 Rigging work for driving with a trailer
6 - 14 3 112 xxx en Operating Manual GMK6300L
xx.xx.xxxx
6.3.3 Switching on boom pre-tensioning
If the main boom has been set down on a trailer, you can change the axle
loads on the rear axle lines by switching on the boom pre-tensioning.
• Switch on the boom floating position;
à p. 6 - 13.
The valves
II and III are under the pressure
gauge (1).
• Close the valve II – the lever (2) is horizontal.
• Open the valve III – the lever (3) points
upward.
You can now fill the pressure accumulator.
• Press button (4) up.
The pressure accumulator is now filled.
• Fill up the pressure accumulator until the
pressure stops rising on the pressure
gauge (1).
• Close the valve III – lever (3) points down.
The valve
II stays closed – lever (2) is
horizontal.
Now the boom pre-tensioning is switched on.
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