Liebherr PR 724 Litronic - Manual (Page 2)

PI_PR724-764_enUS.INDD 2 18.12.2009 13:24:18 Uhr
To be successful despite the constantly increasing cost and time pressures, construction machinery must meet the highest
demands regarding working speed and accuracy. Increasingly, automatic grade control systems are utilized to improve the
productivity of operator and machine.
They utilize existing planning data to automatically guide the machine attachments when removing or spreading material.
With the aid of the most up-to-date technology, complex surfaces and exact grades can be produced quickly and precisely.
Grade control systems for crawler tractors
Advantages of automatic
grade control systems:
The use of stakes and string lines, as well as personnel •
costs for these tasks are dramatically reduced
No loss of time due to constant measurement checks
•
or extensive rework, resulting in better machine
utilization
Fewer passes mean less wear and lower fuel
•
consumption
More accurate grading improves material economy
•
due to controlled material usage
Signifi cant cost savings for the owner and
•
ultimately higher profi ts
Liebherr crawler tractors are eminently suitable for application of automatic grade controls, thanks to their innovative
drive system. The hydrostatic drive provides uninterrupted power without the need to shift gears. Due to the long tracks
and the perfect match of front attachment, working hydraulics, and base machine, exceptional grading properties are
ensured.
Depending on the type of application, various technologies are utilized. To simplify the installation, Liebherr offers a
number of installation kits. They ensure that the retrofi t installation of the grade control system on the crawler can be
completed without requiring access into the interior of the machine.
2 Grade control systems
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