Liebherr LR 634 Litronic - Manual (Page 13)

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Economy with High Performance
Liebherr crawler loaders provide impressive performance
in tunnel operations thanks to their superb production ca-
pacity. This is the result of unbeatable maneuverability,
quick cycle times, and a high bucket filling factor. Thanks
to the Liebherr hydrostatic travel drive, tractive force can
be applied to both tracks without interruption, therefore
ensuring excellent handling performance under load. And
when it comes to maneuvering in tight spaces, the prac-
tical “counter rotation” function comes into its own. The
operating hydraulics consist of a solid Z-bar linkage, which
allows for very high break-out forces when loading rock.
Liebherr crawler loaders are powered by economical Die-
sel engines running at a constant engine speed – another
bonus for the economic success of tunnel construction
projects. Reliability
Liebherr crawler loaders offer maximum reliability. All
components used feature extremely long service life even
under the toughest conditions encountered in a tunnel.
Parts subjected to particularly severe stress are made of
the strongest possible material, and sensitive areas, such
as the final drive or hydraulic lines are provided with the
best possible protection. Maintenance-free components,
such as tracks and hinge pins, and lengthy maintenance
intervals ensure that effort and expenditure on servicing
and maintenance can be kept to a minimum.
Safety
The tested and internationally certified ROPS/FOPS roll
over and falling objects protection system provides the
crawler loader operator with a safe place to work. The front
window can be fitted with a grille to provide protection
against falling rock fragments. Additionally, the Liebherr
crawler loader can be fitted with a camera to monitor
the area behind the machine. By way of a display in the
cab, this provides a better view to the rear, and therefore
provides greater safety for personnel who are within the
working area of the machine.
Comfort
The Liebherr single joystick operating system for travel
and working hydraulics allows the crawler loader to be
controlled with fingertip sensitivity. Functions integrat-
ed in the two joysticks make process sequences even
easier. Depending on the application demands, travel
speed forwards and backwards can be programmed from
0 to 6.2 mph. In addition, the float position, automatic
bucket positioner, and automatic lift kickout can be easily
pre-selected in the operational controls.
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