Liebherr A 924 Litronic User Manual download pdf (Page 12)

12 A 924 Litronic

Technical Data

Engine

Rating per ISO 9249

��

129 kW (175 HP) at 1.800 RPM

Option

��

140 kW (190 HP) at 1.800 RPM

Model

��

Liebherr D 934 L according to stage IIIB / Tier 4i

Type

��

4 cylinder in-line

Bore/Stroke

��

122/150 mm

Displacement

��

7.0 l

Engine operation

��

4-stroke diesel

common-rail-injection

turbo-charged and after-cooler

reduced emissions

Harmful emissions values

��

in accordance with 97/68/EG stage IIIB

Emission control

��

Liebherr particle filter

Cooling system

��

water-cooled and integrated motor oil cooler

Air cleaner

��

dry-type air cleaner with pre-cleaner, main and safety

elements

Fuel tank

��

480 l

Engine idling

��

sensor controlled

Electrical system

Voltage

��

24 V

Batteries

��

2 x 135 Ah/12 V

Alternator

��

three phase current 28 V/100 A

Hydraulic System

Hydraulic pump

��

Liebherr, variable displacement, swashplate double

pump

Max. flow

��

2 x 215 l/min.

Max. hydr. pressure

��

350 bar

Hydraulic pump

regulation and control

��

Liebherr-Synchron-Comfort-system (LSC) with elec-

tronic horsepower regulation, pressure cut-off, load

sensing and torque controlled swingdrive priority

Hydraulic tank capacity

��

190 l

Hydraulic system capacity

��

max. 430 l

Filtration

��

main return filter with integrated partial micro filtration

(5 µm)

Cooling system

��

compact cooling system comprising cooling unit for

water, hydraulic oil and charge air with stepless,

thermostatically controlled fan

MODE selection

��

adjustment of engine and hydraulic performance via

a mode pre-selector to match application, e.g. for

especially economical and environmentally friendly

operation or for maximum digging performance and

heavy-duty jobs

Engine speed and

performance setting

��

stepless alignment of engine output and hydraulic

power via engine speed

Hydraulic Controls

Power distribution

��

via control valve with integrated safety valves, simul-

taneous and independent operation of travel drive,

swing drive and work

Control type

Attachment and swing

��

proportional via joystick levers

Travel

��

electroproportional via foot pedal

Additional functions

��

via switch and/or electroproportional foot pedals

Option

��

proportional control, proportionally acting transmitters

on the joysticks for additional hydraulic functions

Swing Drive

Drive

��

Liebherr swashplate motor with torque control and

integrated brake valve

Transmission

��

Liebherr compact planetary gear

Swing ring

��

Liebherr sealed single race ball bearing swing ring,

internal teeth

Swing speed

��

0 – 9.0 RPM stepless

Swing torque

��

75 kNm

Brake

��

holding brake (spring applied – pressure released)

Option

��

pedal controlled positioning swing brake

Operator’s Cab

Cab

��

ROPS safety cab structure (capable of sweeping over)

with individual windscreens or featuring a slide-in

subpart under the ceiling, work headlights inte grated

in the ceiling, a door with a side window (can be

opened on both sides), large stowing and depositing

possibilities, shock- absorbing suspension, sound

damping insulating, tinted laminated safety glass,

separate window shades for the sunroof window and

windscreen

Operator’s seat Standard

��

air cushioned operator’s seat with headrest, lap belt,

seat heater, manual weight adjustment, adjustable

seat cushion inclination and length and mechanical

lumbar vertebrae support

Operator’s seat Comfort

(Option)

��

in addition to operator’s seat standard: lockable

horizontal suspension, automatic weight adjustment,

adjustable suspension stiffness, pneumatic lumbar

vertebrae support and passive seat climatisation with

active coal

Operator’s seat Premium

(Option)

��

in addition to operator’s seat comfort: active elec-

tronic weight adjustment (automatic readjustment),

pneumatic low frequency suspension and active seat

climatisation with active coal and ventilator

Control system

��

joysticks with arm consoles and swivel seat

Operation and displays

��

large high-resolution operating unit, selfexplanatory,

with touchscreen function, video-compatible, numer-

ous setting, control and monitoring options, e.g. air

conditioning control, fuel consumption, machine and

tool parameters

Air-conditioning

��

automatic air-conditioning, recirculated air function,

fast de-icing and demisting at the press of a button,

air vents can be operated via a menu; recirculated air

and fresh air filters can be easily replaced and are

accessible from the outside; heating-cooling unit,

designed for extreme outside temperatures, sensors

for solar radiation, inside and outside temperatures

(country-dependent)

Noise emission

ISO 6396

��

(inside cab) = 71 dB(A)

2000/14/EC

��

(surround noise) = 102 dB(A) – 129 kW

(surround noise) = 103 dB(A) – 140 kW

Undercarriage

Drive

��

variable flow swashplate motor with automatic brake

valve

Transmission

��

oversized two speed power shift transmission with

additional creeper speed

Pulling force

��

135 kN

Travel speed

��

0 – 3.5 km/h (creeper speed off road)

0 – 7.0 km/h (off road)

0 – 13.0 km/h (creeper speed on road)

0 – 20.0 km/h (road travel)

0 – max. 25.0 km/h Speeder (Option)

Driving operation

��

automotive driving using accelerator pedal, cruise

control function: storage of variable accelerator pedal

positions, both off-road and on-road

Axles

��

automatic or operator controlled hydraulic front axle

oscillation lock

Brakes

��

steering and rigid axle with wet, maintenance-free

multi disc brakes with minimized backlash. Spring

applied/pressure released parking brake integrated

into gear box

Stabilization

��

stabilizing blade (adjustable during travel for dozing)

2 point outriggers

stabilizing blade + 2 point outriggers

4 point outriggers

Option

��

EW-undercarriage 2.75 m/9’

Attachment

Hydraulic cylinders

��

Liebherr cylinders with special seal system.

Shockabsorption

Bearings

��

sealed, low maintenance

Lubrication

��

Liebherr central lubrication system (country-

dependent)

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Liebherr A 924 Litronic User Manual Page 12

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