Liebherr L 566 User Manual
L 550 – L 580Wheel Loaders
Tipping Load, articulated: 26,785 lb – 40,785 lb
New
Generation
L 550
L 556
L 566
Tipping Load, articulated: 26,785 lb
Bucket Capacity: 4.2 yd
Operating Weight: 38,140 lb
Engine Output: 173 HP(I)/129 kW
L 580
Tipping Load, articulated: 40,785 lb
Bucket Capacity: 6.5 yd
Operating Weight: 55,510 lb
Engine Output: 288 HP(I)/215 kW
Tipping Load, articulated: 29,870 lb
Bucket Capacity: 4.7 yd
Operating Weight: 39,460 lb
Engine Output: 188 HP(I)/140 kW
Tipping Load, articulated: 34,720 lb
Bucket Capacity: 5.2 yd
Operating Weight: 51,035 lb
Engine Output: 255 HP(I)/190 kW
2 L 550 - L 580
Economy
The Liebherr driveline with Liebherr Power Ef ciency (LPE)
reduces wheel loader fuel consumption by 25% or more
when compared to conventional travel gears!
Performance
The Liebherr driveline allows for optimal positioning of the
Liebherr diesel engine. In the wheel loaders L 550 – L 556
the diesel engine is rotated 90° and mounted transverse to
the direction of travel. In the L 566 – L 580 it is mounted
lengthways in the rear, with the output shaft facing backwards. Compared to conventionally driven wheel loaders,
the operating weight is much lower, the tipping load is higher, and more material can be moved each operating hour.
Reliability
All the materials used in the Liebherr wheel loaders have
passed extensive tests to ensure that they meet Liebherr’s
exacting standards even in the toughest conditions. The
advanced concept and proven quality make Liebherr wheel
loaders the benchmark of reliability.
Comfort
The ultra-modern cab design with advanced ergonomics,
continuously variable Liebherr driveline for uninterrupted tractive force, standard Liebherr ride control, optimum
weight distribution and easy service access lead to extraordinary overall comfort.
L 550 - L 580 3
35
30
25
20
15
n=?
Lower fuel consumption
Effi ciency behaviour without LPE
Favorabl e
• Up to 25 % less fuel consumption
5
8'2"
B
65'7"
T ~ 35 sec.
A
4
3
2
1
when compared to conventionally
driven machines.
• The Liebherr wheel loaders
demonstrate their fuel economy
in the Liebherr standard normtest.
Pressure
Effi ciency behaviour with LPE
rpm rpm
4 L 550 - L 580
L0083
Working point
Pressure
Unfavorable
Economy
The Liebherr driveline with Liebherr Power Ef ciency (LPE) reduces wheel loader fuel
consumption by 25 % or more when compared to conventional travel gears!
Low operating costs
Minimum costs,
High handling capacity
Liebherr wheel loaders are unbeatable for economy
compared to conventionally driven wheel loaders.
This is due to the following factors:
− Low fuel consumption thanks to higher ef ciency
and low operating weight. Thanks to the newly developed Liebherr Power Ef ciency system the large
wheel loaders use the same amount of fuel compared to their predecessors in the Tier 3 generation.
− Practically no brake wear thanks to the hydraulic
braking action of the driveline; this ultimately reduces repair costs.
− Reduced tire wear due to continuous traction control. Depending on the working conditions, there is
up to 25 % less wear.
Liebherr Power Ef fi ciency (LPE)
• The newly developed system known
as Liebherr Power Ef ciency (LPE)
optimizes the interaction between
the drive components. It optimizes
the position of the working point in
the characteristic map with regard
to the degree of ef ciency.
• Thanks to this technology it was
possible to prevent an increase of
fuel consumption from Tier 3 to Tier
4i. LPE also saves up to an additional
8% in fuel compared to wheel loaders where the system is not used.
Active environmental protection
Economical use
of resources
Low noise emission The innovative driveline concept means much lower
The reduction in fuel lowers emissions, thus actively
protecting resources:
0.3 gal of fuel produces up to 7 lb of carbon dioxide
). By saving up to 1.3 gal per operating hour, up
(CO
2
to 33,070 lb less CO
is produced in 1,000 operating
2
hours. Not only are operating costs reduced but the
environment also bene ts from
the drastically reduced emissions.
noise emission – Liebherr wheel loaders are signi cantly quieter in operation.
Reduced tire wear
• The tractive force can be adjusted
continuously. This stops wheel spins
and reduces tire wear by up to 25%.
Reduced brake wear
• Even under the toughest working
conditions, the Liebherr travel drive
always brakes hydraulically.
The mechanical service brake only acts
as a support and is therefore subject
to hardly any wear.
L 550 - L 580 5
6 L 550 - L 580
Liebherr driveline L 550 – L 55 6
• Optimum weight distribution
thanks to transverse installation
of the diesel engine.
• The diesel engine as well as the variable displacement pumps mounted
on the engine act as counterweight,
therefore allowing higher tipping
loads at low operating weight.
• Compact design improves visibility
in all directions.
Performance
The Liebherr driveline allows for optimal positioning of the Liebherr diesel engine.
In the wheel loaders L 550 – L 556 the diesel engine is rotated 90° and mounted
transverse to the direction of travel. In the L 566 – L 580 it is mounted lengthways in
the rear, with the output shaft facing backwards. Compared to conventionally driven
wheel loaders, the operating weight is much lower, the tipping load is higher, and
more material can be moved each operating hour.
Higher performance, lower weight
Higher productivity The combination of the Liebherr driveline and the
unique position of the Liebherr diesel engine allows
for higher tipping loads at low operating weight. This
leads to signi cantly higher productivity since there is
no need for unnecessary counterweight.
Ultra modern Liebherr driveline
Innovative technology Tractive force and speed are automatically adjusted
to the requirements of the operator without shifting.
There is no need for a mechanical reverse gear because the travel direction is changed hydraulically.
Liebherr driveline L 566 – L 580
• Optimum weight distribution due to
the Liebherr diesel engine installed
lengthways and the output shaft
facing the rear of the machine.
• The diesel engine as well as the
variable displacement pumps
mounted on the engine act as
counterweight, therefore allowing
higher tipping loads at low operating
weight.
• Compact design improves
visibility in all directions.
Flexibility puts them ahead
An all-purpose loader The industrial lift arm is available as an alternative to
the standard Z-bar linkage, at no additional cost. The
industrial lift arm features a parallel guide arrangement and high torque in the upper lifting range - ideal
properties for larger and heavier attachments as well
as transporting heavy loads. With its industrial lift arm
Liebherr can now offer a continuous and uniform solution for industrial operations over the entire range of
large machines. With their compact design, Liebherr
wheel loaders can maneuver quickly and ef ciently the best choice for high handling capacities.
Conventional travel gear
• Longitudinally mounted diesel engine
moves the center of gravity further
forward.
• Additional counterweight is needed
to maintain stability and to increase
the tipping load.
• This results in high operating weight
and poor visibility.
L 550 - L 580 7
8 L 550 - L 580
Cooling system
• The cooling system is mounted between
the diesel engine and the cab on the rear
chassis, where it can draw in clean air.
The speed of the fan is dependent on the
cooling capacity, with thermosensors
ensuring optimum fan speed.
• To improve visibility, the cooling system
has been mounted lengthways and the
unit has been redesigned to make
cleaning and maintenance even easier.
• The cooling system has been adjusted
to meet the demands of the new engine
technology.
• The reversible fan drive is a standard
feature, a particle protection for the
radiator and a large-mesh radiator are
also available as options to prevent
contamination in especially dusty atmospheres and to make cleaning easier.
Minimum cleaning effort translates into
more ef cient work.
Reliability
All the materials used in the Liebherr wheel loaders have passed extensive tests to
ensure that they meet Liebherr’s exacting standards even in the toughest conditions.
The advanced concept and proven quality make Liebherr wheel loaders the benchmark of reliability.
Reliable Liebherr driveline
Fewer components The Liebherr driveline includes a self-locking hydraulic
brake, which means the additional wet brake discs are
wear-free since there is no need for a reversing gear unit.
There are fewer components needed, which minimizes
the number of parts susceptible to wear.
Controlled cooling
The intelligent answer The cooling fan is driven independently from the Liebherr
diesel engine and produces only the cooling air output
which is actually required. Heat sensors ensure reliable
control. If overheating should occur, the wheel loader automatically shifts down to rst travel speed range. The
reduced power consumption protects the engine from
overheating. At the same time, the fan speed is increased
to maximum output, thus preventing the engine from
overheating.
Components meet manufacturer’s quality standards
Everything from
a single source
Optimized engine
technology
Liebherr’s own components
• Liebherr has many years of experience
in design, development and construction of diesel engines, hydraulic
cylinders and electronic components.
They are matched together down to the
smallest detail to guarantee optimum
interaction and performance.
Main components such as the diesel engine, hydraulic cylinders and electronics are developed and manufactured by
Liebherr to ensure the highest quality standards. Liebherr
Wheel Loaders are carefully designed down to the smallest detail to provide customers with the perfect machine
solution to match the application-speci c demands while
achieving maximum productivity and longevity.
As well as further developments towards greater environmental compatibility, the new generation of diesel engines have been optimized in a number of other respects.
In addition to Common Rail technology a diesel particle
lter signi cantly reduces exhaust emissions. With active
regeneration, in most operational circumstances this ltration process ensures ef cient, uninterrupted work.
Liebherr diesel engine
• Common Rail technology optimizes the
combustion process and thus reduces
emissions.
• Further reduction of particle emissions due
to the diesel particle lter with oxidation
catalytic converter. Active regeneration
ensures ef cient, uninterrupted work.
• Proactive intervention of Liebherr Power
Ef ciency (LPE) in the engine management
system increases ef ciency.
L 550 - L 580 9
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