Liebherr A900C User Manual
Wheeled Excavator
A 900 C
Operating Weight: 17,400 - 19,600 kg
Engine Output: 95 kW / 129 HP
Bucket Capacity: 0.32 - 0.95 m³
2
A 900 C
Operating Weight: 17,400 - 19,600 kg
Engine Output: 95 kW / 129 HP
Bucket Capacity: 0.32 - 0.95 m³
A 900 C Litronic
3
Reliability
Liebherr hydraulic excavators have been designed and
built to withstand the toughest of conditions at the building site. Their rugged design, high-tensile materials and
individual components ensure maximum availability and
long life-expectancy.
Performance
Liebherr wheel excavators have been designed for maximum productivity. Maximum digging performances, high
lift capacities and quick working cycles are prerequisite
for effi cient building site operation, and a wide variety of
attachments optimize every excavator application.
Comfort
Largely dimensioned and ergonomically designed, the
Liebherr excavator cab features an operator’s seat which
can be individually adjusted, as well as clearly arranged
control instruments and ideal all-round view. Automatic
air-conditioning guarantees an optimum temperature in
the Liebherr Feel-Good cab at all times.
Economy
The Liebherr-Litronic-System increases machine performance, reduces fuel consumption and minimises service
and maintenance costs. Due to Liebherr’s well- balanced
range, the ideal machine can always be selected to suit
every application.
A 900 C Litronic
4
A 900 C Litronic
Features
• High-tensile steel plates in highstress areas for the toughest of
applications
• Well-thought-out and secure bearings
for attachments and cylinders
• Maximum resistance, even when
lifting heavy loads
5
Reliability
Liebherr construction machinery is proven all over the world every day on the
most diverse of building sites. Many years of experience as the world’s largest
manufacturer of rubber-tyre excavators, continuous development and the introduction of the latest technology are evident in every machine, guaranteeing absolute safety during applications. With its rugged design, and featuring
Liebherr components, the Liebherr hydraulic excavators have been designed
for extremely long life-expectancy.
Quality in detail
Liebherr components
Functional safety
Rugged attachments
Working attachment
Components such as engine, hydraulic cylinders,
swing gear and electric parts have been specially
designed, tested and manufactured by Liebherr
for construction machinery. Parts including engines and pumps for example, are already being
synchronized with each other as early as the
construction phase, yielding a constant standard
of quality.
Safety-orientated components, fi tted as standard,
allow high availability.
The operator can thus concentrate fully on the
task at hand, due to the integrated on-board electronics performing a constant balancing of predefi ned set data.
Filtering of metallic fi lings by the magnetic rod, fi tted in the hydraulic system as standard, increases
life-expectancy of the hydraulic components and
the oil.
The durable attachments have been designed for
the toughest of applications. All components are
optimised to the FEM methods and the hoist cylinders feature bearings on both sides.
Liebherr hydraulic cylinders
• Specifi c size for each machine
• High-grade surface coating of
the piston rods
• All Liebherr cylinders feature
special long-life sealing systems
• Shock absorption at both sides
in the working cylinders
Piping
The hydraulic lines are arranged optimally to safeguard against damage. The electric cabling is
made with high-grade materials, thus guaranteeing a reliable supply to the consumer.
Functional safety
• Essential operating data is stored and can
be recalled at any time.
• Control and monitoring functions increase
functional safety of the machine.
• Four fi xed working modes for output discharge
facilitate an effective and effi cient operation:
– Eco-Mode: for high output at big fuel savings
– Power-Mode: for heavy-duty digging-and loading
performance under severe conditions
– Lift-Mode: for precise handling of heavy loads
– Fine-Mode: for fi ne control at precision work
A 900 C Litronic
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A 900 C Litronic
Liebherr diesel engine
• Long life-expectancy, expansive cylinder
capacity and increased weight
• According to level IIIA / Tier 3
• Specially designed for construction
machinery operation
• Oil supply even with extreme tilt angle
7
Performance
Liebherr wheel excavators have been designed for maximum productivity. Perfectly harmonized, the Liebherr-developed and Liebherr-manufactured components including diesel engine, hydraulic pump and motor, as well as swing
gear and cylinders, guarantee maximum performance. Tremendous digging
and breakout forces, extensive lifting capacities and quick working and travel
movements are thus resulted.
Innovative solutions
Intelligent
undercarriage
Multitude of
attachments
Extensive lifting
capacities
High productivity
Quick working cycles
The entire travel drive unit is integrated in the sturdy
undercarriage. Intelligently built and robust in service, the undercarriage offers the travel drive unit
the best possible protection from debris, stones
and soil. Its advantages are perfect all-terrain compatibility and extremely high ground clearance.
Liebherr provide an individual, application-related
range of diverse attachments. Hydraulic booms,
adjustable both in height and offset positions, as
well as standard and offset-adjustable goosenecks,
can be combined with different sticks.
Canalization and the lifting of pipes are everyday
tasks for rubber-tyre excavators. These requirements are endorsed via an intelligent concept of
uppercarriage sectioning together with the positioning of the Liebherr engine, mounted at a transversal angle directly in front of the counterweight.
Separate hoist cylinder bearing points at the upper end of the basic boom also increase the lifting
capacities considerably.
High swing torque – attained as a result of the
Liebherr swing ring featuring internal teeth and
swing drive, specially designed to increase the
torque.
Rugged undercarriage
• Various undercarriage designs featuring welded, durable outriggers
allow safe positioning, optimum stability, and long life-expectancy of the
machine for every application.
• Prop-up blade / dozing blade in
box-type design – only two bearing
points for high torsional resistance
• Optional protection system for blade
cylinders
Performance without
compromise
Maximum performance and maximum forces are
available to the operator at all times.
Litronic
• Increases productivity of the
excavator
• Reduces fuel consumption
• Reduces service costs and eases
operation
• Allows maximum sensitivity and as
many overlapping movements as are
required
A 900 C Litronic
8
A 900 C Litronic
Large-sized cab
• Adjustable steering column
• Operator’s seat, adjustable in height and
can also be adapted to the individual weight
of the operator.
• Consoles with or without possibility
of horizontal adjustment.
• Large roof window
• Sun blinds
9
Comfort
The excavator operator is provided with an ergonomically-arranged working
area within Liebherr hydraulic excavator cabs. All switches and functions are
logically laid out, and operator’s seat, steering column and consoles can be
adjusted individually. Conditioning and concentration can thus be maintained
throughout the entire working day, guaranteeing constant, maximum productivity of the operator.
Mobile comfort
Easy access
Optimum visibility
Pleasant surroundings
Maintenance features
Easy maintenance
Ease of operation
Easy access
Wide steps, ergonomically-positioned handles
and adjustable steering column allow an easy access into the Liebherr operator’s cab.
A well-thought-out design of the uppercarriage,
featuring large glass panels and rounded edges,
increase overall visibility and guarantees a safe
overview of the entire working area.
Reduced engine speed together with elaborate
sound insulation, as well as optimised hydraulic
components, allow a comfortable noise level both
inside and out. The noise level is comparable with
that of a diesel car.
Semi-Automatical Central lubrication for swing
gear and main parts of the attachment.
A shut-off valve, fi tted to the hydraulic tank as
standard, disconnects the system and guarantees
ease of maintenance to the hydraulic system.
Large maintenance fl aps allow comfortable and
safe access to all maintenance points.
Storage compartment –
Everything has its place
• Suffi cient storage space for a commercially-approved cooler box behind the
operator’s seat
• Drinks holder and storage compartment in operator’s cab
• Large storage box behind the
operator’s cab
• Two standard tool boxes in the
undercarriage
Fully-automatic air-conditioning system
• The air-conditioning system, fi tted as
standard, offers the same comfort as that
of a regular car
• Two sensors for precise temperature
regulation
• Ventilation fl aps are controlled via keys
• Reheat function for quick dehumidifying /
defrosting of the windshield
A 900 C Litronic
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A 900 C Litronic
Hydrostatic fan drive
• Accelerated warm-up period
• Guaranteed constant oil quality as a
result of constant oil temperature
• Increased life-expectancy of drive
components
• The fan only runs at the output required, thus conserving fuel and reducing the noise level considerably
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