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

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