Technical data, Travel drive, Axles – Liebherr L 538 User Manual
Page 15: Brakes, Steering, Operator’s cab, Noise emission, Capacities, Attachment, Attachment hydraulics
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L 524 – L 542
15
Technical Data
Travel Drive
Stepless hydrostatic travel drive
Design
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Swash plate type variable flow pump and two variable
axial piston motors in closed loop circuit and axle
transfer case. Direction of travel is reversed by chan-
ging the flow-direction of the variable-displacement
pump
Filtering system
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Suction return line filter for closed circuit
Control
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By travel and inching pedal. The inching pedal makes
it possible to control the tractive and thrust forces
steplessly at full engine speed. The Liebherr joystick
is used to control forward and reverse travel
Travel speed range
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Speed range 1
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0 – 3.7 mph
Speed range A1-2
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0 – 9.9 mph
Speed range A1-3
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0 – 24.9 mph
The quoted speeds apply with the tires that are
standard equipment on the loader.
Axles
Four-wheel drive
Front axle
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Fixed
Rear axle
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Centre pivot, with 10° oscillating angle to each side.
1’7” in height can be driven over (with all four wheels
remain in contact with the ground)
Differentials
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Automatic limited-slip differentials with 45% locking
action in both axles
Reduction gear
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Planetary final drive in wheel hubs
Track width
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1,960 mm with all types of tires (L 524, L 528)
1,900 mm with all types of tires (L 538, L 542)
Brakes
Wear-free service brake
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Self-locking of the hydrostatic travel drive (acting on
all four wheels) and additional pump-accumulator
brake system with wet multi-disc brakes located in
the differential housing (two seperate brake circuits)
Parking brake
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Electro-hydraulically actuated spring-loaded disc
brake system on the front axle
The braking system meets the requirements of the EC guidelines 71/320.
Steering
Design
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”Load-sensing” swash plate type variable flow pump
with pressure cut-off and flow control. Central pivot
with two double-acting steering cylinders
Articulation angle
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40° (to each side)
Emergency steering
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Electro-hydraulic emergency steering system
Operator’s Cab
Design
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On elastic bearing on rear section, soundproof
ROPS/FOPS cab. Operator’s door with optional fold-
out window, 105° opening angle, ventilation opening
on the right side, front windscreen made of com-
pound safety glass, green tinted as standard, side
windows made of single-pane safety glass,
grey tinted, continuously adjustable steering column
and joystick control as standard, heated rear window
(ESG)
ROPS roll over protection per EN/ISO 3471/
EN 474-1
FOPS falling objects protection per EN/ISO 3449/
EN 474-1
Liebherr Operator’s seat
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6 way adjustable seat with lap belt and heating
system; adjustable air suspension from soft to hard;
automatic weight adjustment
Cab heating and ventilation
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Operator’s cab with 4-level air control, cooling water
heating, defroster and air conditioning with electronic
valve control, as well as electronic fresh/recirculated
air control, filter system with pre-filter, fresh air filter
and recirculated air filter, easily replaced, air condition
as standard / automatic air conditioning system optional
Noise Emission
L 524
L 528
L 538
L 542
ISO 6396
L
pA
(inside cab)
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69 dB(A)
69 dB(A)
69 dB(A)
69 dB(A)
2000/14/EG
L
WA
(surround noise)
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101 dB(A)
101 dB(A)
102 dB(A)
102 dB(A)
Capacities
L 524
L 528
L 538
L 542
Fuel tank
(plastic design)
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gal
54.2 54.2 54.2 54.2
Fuel tank
(steel version, optional)
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gal
58.1 58.1 58.1 58.1
Engine oil
(inclusive filter change)
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gal
3.9 5.4 5.4 5.4
Transmission
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gal
1 1 1 1
Coolant
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gal
10 10 10 10
Front axle/wheel hubs
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gal
4.3/0.7 4.3/0.7 4.3/0.7 4.3/0.7
Rear axle/wheel hubs
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gal
4/0.7 4/0.7 4/0.7 4/0.7
Hydraulic tank
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gal
29 29 29 29
Hydraulic system, total
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gal
44.9 44.9 47.6 47.6
Attachment
Geometry can be chosen
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Powerful Z-bar linkage with one tilt cylinder,
hydraulic quick coupler – optional equipment;
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Parallel linkage with two tilt cylinders, hydraulic
quick coupler – standard equipment
Bearings
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Sealed
Cycle time at nominal load
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L 524
L 528
L 538
L 542
ZK PK ZK PK ZK PK ZK PK
Lifting
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6.6 s 6.6 s 5.4 s 5.4 s 5.3 s 5.3 s 5.3 s 5.3 s
Dumping
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1.8 s 3.5 s 1.8 s 3.5 s 1.6 s 3.5 s 1.6 s 3.5 s
Lowering (empty)
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4.0 s 4.0 s 4.0 s 4.0 s 4.0 s 4.0 s 4.0 s 4.0 s
Attachment Hydraulics
Design
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”Load-Sensing” variable axial piston pump with
output and flow control, and pressure cut-off in the
control block
Cooling
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Hydraulic oil cooling using thermostatically controlled
fan and oil cooler
Filtration
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Return line filter in the hydraulic reservoir
Control
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”Liebherr joystick” with hydrostatic servo control
Lift circuit
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Lifting, neutral, lowering
and float position controlled by Liebherr joystick with
detent; automatic hoist kick out as standard
Tilt circuit
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Tilt back, neutral, dump
automatic bucket return to dig
L 524
L 528
L 538
L 542
Max.
flow
gpm
27 36 45 45
Max. pressure
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psi
4,569 4,786 5,076 5,076