Liebherr Tilt-rotator User Manual
A 918 CompactWheeled excavator
Job Report
The Liebherr A 918 Compact Litronic wheeled
excavator with LIKUFIX and TR 25 tiltrotator in
service with Grüner and Mühlschlegel
Situation Task
In 1924, Fritz Grüner founded the construction company, Grüner
und Mühlschlegel, in the southern German town of Biberach an
der Riß. The company is still based there today. The areas of
activity of this traditional family firm from Upper Swabia include
civil engineering, road and bridge building as well as garden and
landscape design. Health and safety, focussing on employees
and long-term company development are the key tenets of the
company’s philosophy. These make the medium-sized company
a reliable and firm partner for employees and customers alike.
Grüner und Mühlschlegel exclusively uses Liebherr machines
for earth moving. Amongst other machines, the fleet includes
three A 900 C Litronic wheeled excavators, an A 316 Litronic, an
R 934 C Litronic crawler excavator and five 506 stereo loaders.
The firm’s construction orders are divided half-and-half between
private companies and public clients within a radius of 100 km
of the company’s headquarters. Recently, the 90 employees of
Grüner und Mühlschlegel have worked on tasks such as new
office and administration buildings, industrial structures and
various road building projects. Under its managing director,
Andreas Braun, the company has made a name for itself in the
region through reliability, quality and technical expertise. Despite
problems in the general economic situation, the construction
company is pleased to report a good level of incoming orders
with full order books.
There is an extreme variety of earth moving tasks to be tackled, reflecting the construction company’s wide range of
activities. These include classic excavation, exposing existing
construction segments, shaping earth mounds, and compacting
incorporated material. A wheeled excavator was to be used
as before for accomplishing these tasks. When it came to
purchasing the machine, the wish list included a high lifting
capacity because of the need to unload and shift prefabricated
concrete components in addition to carrying out the groundworks. It is also highly important for the wheeled excavator to
have a short tail swing radius, because the working environment
in road building and city centre applications is often restricted.
It is necessary to use different working tools in order to accomplish the various tasks. There must be provision for exchanging
these from the operator’s cab within the shortest possible time.
The company places particular emphasis on the operating and
maintenance costs of a machine, as well as its environmental
friendliness. Therefore, the final choice came down exclusively
to wheeled excavators that meet the requirements of the current
exhaust emissions stage IIIB.
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