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PR 734 PR 744Crawler Tractors
Engine Output (SAE J1349): 150 kW / 201 HP 185 kW / 248 HP
Operating eight:W 20,388 - 24,961 kg 24,605 - 31,669 kg
44,948 - 55,030 lb 54,245 - 69,818 lb
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PR 734
PR 744
Engine Output (SAE J1349): 150 kW / 201 HP
Operating Weight:
44,948 - 55,030 lb
Blade Capacity: 3.80 - 5.56 m³
4.97 - 7.27 yd³
Hydrostatic travel drive with
electronic control
20,388 - 24,961 kg
Engine utput O (SAE J1349): 185 kW / 248 HP
Operating Weight: 24,605 - 31,669 kg
54,245 - 69,818 lb
Blade Capacity: 4.90 - 7.20 m³
6.41 - 9.42 yd³
Hydrostatic travel drive with
electronic control
PR 734 Litronic PR 744 Litronic
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Performance
Sheer strength and innovative technology – these are the
hallmarks of the generation 4 of Liebherr crawler tractors. The impressive balance between operating weight
and engine output assures maximum productivity under
all conditions. Whether during ripping, dozing or grading,
the PR 734 and the PR 744 excel in any application with
outstanding performance.
Reliability
Strong and robust: In terms of their construction and quality of materials, Liebherr crawler tractors are consistently
designed with longevity in mind. Parts that are subjected
to considerable stress are produced from high-strength
material; critical components are optimally protected. All
this makes Liebherr crawler tractors the benchmark for
reliability and availability.
Economy
Clear economic benefits speak for Liebherr. Like all
Liebherr machines, the PR 734 and the PR 744 boast
an exemplary service concept. This reduces both down
times and maintenance costs. Our latest-generation diesel
engines combine high performance and fuel economy –
guaranteeing exceptional pushing power with low fuel
consumption and the efficient drive system.
Comfort
Generation 4 crawler tractors offer a spacious and comfortable workplace designed according to state-of-the-art
ergonomic standards, giving the operator an excellent
view of the work area and the blade. The intuitive single-joystick enables sensitive and reliable control of the
machine.
PR 734 Litronic PR 744 Litronic
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PR 734 Litronic PR 744 Litronic
4
Liebherr diesel engine
•State-of-the-arttechnology:Pump-line-
nozzle injection system, 4-valve technology, turbocharger with charge-air intercooling and electronic engine management
ensure power reserves in every situation.
•Environmentally-friendlyandeconomical:
Complies with the latest exhaust emissions
standards 2004/26/EC Stage IIIa (EU) and
EPA/CARB Tier 3 (US).
•Extra-deepoilsumppermitstravel
on gradients up to 45°.
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Performance
Liebherr has over 30 years of experience in the manufacture of hydrostatically
driven tractors. The high-performance generation 4 crawler tractors are the perfect machines for a wide variety of applications.
High productivity
High drawbar pull
The powerful Liebherr diesel engine in combination
with the innovative Liebherr travel drive guarantees
ample power in all situations. The drive system
does not require any gearshifting, which means that
engine power is transferred to the tracks without
interruption – even when cornering.
High dozing and
ripping power
The hydrostatic travel drive enables the operator
to define the optimal travel speed and drawbar pull
with ease - preventing the tracks from slipping and
ensuring that maximum power is transmitted to the
ground at all times.
Optimized blade design
for improved rolling of
the material
The blade contours of the PR 734 and PR 744
machines have been further optimized. Improved
rolling of the material enables the machine to achieve
even higher productivity.
Best levelling
characteristics
The entire front-end superstructure of the machine is
torsionally rigid and robust. In conjunction with the
long track frames, this ensures smooth operation of
the blade at all times.
A diversity of applications
Outstanding
maneuverability
The hydrostatic drive has a further advantage when
working in confined spaces. All travel movements
can be performed quickly and without difficulty,
including counter-rotation.
Liebherr hydrostatic drive
•Automaticspeedandtorqueadjustment
constantly optimizes the machine’s power
flow in the event of load changes.
•Evenatlowspeeds,forexampleindemanding ripping operations, the thermal load of
the hydrostatic travel drive remains low.
The high efficiency of the drive remains
almost unchanged.
Low machine
center of gravity
The layout of the drive components results in an
extremely low machine center of gravity, which permits safe operation during even the most challenging applications on slopes and embankments.
Optimized blade design
•Thebladesaredenedbyuncompromising penetration characteristics and outstanding rolling of the
material. The sloping top corners
of the blade allow the operator to
quickly ascertain blade filling.
•Robustly-builtusingwear-resistant
materials, Liebherr blades excel
under even the most demanding
conditions.
PR 734 Litronic PR 744 Litronic
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Specific fuel
consumption [g/kWh]
Engine speed [1/min]
PR 734 Litronic PR 744 Litronic
6
Consistent engine speed
for low fuel consumption
•Theratedenginespeedliesinthe
range of lowest specific fuel consumption, thereby ensuring maximum operating efficiency.
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Economy
Liebherr crawler tractors are consistently designed with cost-effectiveness in
mind, resulting in low fuel consumption, high productivity, long component service lifetimes and low maintenance costs.
Low fuel consumption
Constant engine speed
The Liebherr diesel engine operates at a consistent
speed at all times, regardless of the given travel
speed. The engine is not throttled and re-accelerated, thereby guaranteeing economical fuel consumption.
Low engine speed
The low engine speed results in significantly
enhanced filling of the cylinder chambers and, as a
consequence, more efficient fuel combustion.
Efficient drive system
The hydrostatic travel drive offers excellent efficiency across the entire speed range. The oil temperature remains low even when high power output
is required at low travel speeds (ripping work).
Load-sensing
power hydraulics
This system only uses the energy that is actually
required by the operating equipment. This saves
fuel if the equipment is not being used.
Low maintenance costs
Long maintenance
intervals
Excellent accessibility
The maintenance intervals are optimally geared to the
individual components. For example: maintenancefree bearings are used on exposed dozing frame.
All service points of the diesel engine are accessible from one side of the machine, while the tilting
cab enables access to the components inside the
machine. These measures allow servicing tasks to
be carried out quickly and efficiently.
Tilting cab
•Enablesstraightforward,rapid
access to all components of the
travel drive and power hydraulics.
Easy maintenance
•Allservicepointsarelocatedon
one side of the machine, saving
time and energy during daily
inspection tasks.
Liebherr PR 734 quick-coupler system
•Transportationwidthoflessthan9’10’’:
The hydraulic quick-coupler system
enables the machine to be transported
easily and quickly.
•Shortset-uptimeandstraightforward operation: The time required for
mounting and dismantling the blade is
reduced from several hours to just a few
minutes and this task can be performed
by one person.
PR 734 Litronic PR 744 Litronic
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PR 734 Litronic PR 744 Litronic
8
Key technologies from Liebherr
•Liebherrhasdecadesofexperienceinthe
development, engineering and production
of components.
•Majorkeycomponentssuchasdiesel
engines, transfer gear boxes, hydraulic
cylinders and final drives are Liebherr-built
and represent the highest quality.
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Reliability
Due to their high quality and excellent engineering, these machines offer maximum
availability. Components developed by Liebherr specifically for use in construction machinery guarantee operational reliability in even the toughest conditions.
Liebherr drive train
Durable engine
Liebherr diesel engines were developed for the most
demanding conditions of use. Their low rated speed
ensures high operational reliability and a long lifetime.
Fewer components
The proven hydrostatic travel drive means that
mechanical components such as a torque converter,
manual gearbox and differential steering or clutches
are not required. Standardized hydraulic pumps and
motors are non-wearing and dependable in operation.
Robust final drive
The large Series 4 final drive is extremely robust and
is engineered to endure the highest loads. A double
gearbox seal with automatic seal monitoring offers
dependable protection.
Robust steel structure
Modular-design
main frame
The main frame is of the proven modular design,
resulting in high torsional rigidity and optimal
absorption of the forces to which it is exposed.
Components subjected to particularly heavy loads
are made of cast steel.
Solutions for a long lifetime
Innovative cooling
system
The electronically controlled suction-type fan controls the operating temperature reliably and regardless of the engine speed. Extra-large radiator fins
ensure good self-cleaning.
Components in life-cycle tests
•FEanalysisisusedduringthedevelopment phase to design the components, thereby ensuring that they
are optimally configured to withstand
heavy-duty use.
•Thecomponentsarethensubjectedto
intensive long-term tests. Only parts
that meet the high quality standard are
used in the machines.
Optimally protected
wiring harness
High-quality material for the protection of the wiring
harness and a well-designed layout ensure the functional reliability of the machine.
State-of-the-art cooling system
•Thehydrostaticallydrivenfanmatchesthe
cooling performance to the cooling requirement, meaning that the engine reaches an
optimal operating temperature more quickly.
•Airistakeninfromdirt-protectedzones,
thereby minimizing contamination caused by
dust particles.
•Optional:Reversiblefanforthequickcleaning
of the radiator in particularly dusty conditions.
PR 734 Litronic PR 744 Litronic
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PR 734 Litronic PR 744 Litronic
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Intuitive single-joystick control
•Precisioncontrolranges:Thetravel
speed ranges can be pre-selected
and programmed individually using
switches.
Pre-sets:
Setting 1: 0 - 4 km/h / 0 - 2.5 mph
Setting 2: 0 - 6.5 km/h / 0 - 4.0 mph
Setting 3: 0 - 11 km/h / 0 - 6.8 mph
•Memoryfunction:
All programmed settings are retained if
the machine is restarted.
Inching/brake pedal
•Inadditiontothesingle-
joystick control, the operator can use the foot pedal
to control the speed of the
machine and, if necessary,
apply the brakes.
1 Inching function
2 Brake function
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Comfort
The redesigned workplace offers the operator a remarkable degree of comfort.
Spacious, quiet and designed with ergonomics in mind, Liebherr comfort cabs
offer the ideal conditions for fatigue-free, concentrated work. Excellent visibility
facilitates safe and precise operation.
A top-class cab
Ergonomics
The ergonomically-designed operator’s workplace
offers the ideal environment for relaxed, productive
work. All instruments and operating controls are laid
out comprehensibly and within easy reach.
Low sound values
The sound level in a Liebherr cab is far below the
legal requirements. The PR 734 and the PR 744
boast exemplary noise values thanks to effective cab sound-proofing and state-of-the-art, quiet
diesel engines.
Outstanding visibility
The integrated ROPS/FOPS protection structure
and large-area glazing afford the operator optimum
outward visibility.
Straightforward and precise control
Single-joystick control
Continuously
variable control
Safety in
every situation
All travel movements can be controlled easily and
precisely with only one joystick – including the
“counter-rotation” function.
Speed selection is continuously variable without
gearshifting and therefore without interrupting drawbar pull.
The crawler tractor is driven with positive power
transmission at all times, even on gradients. The
self-locking action of the system (hydrostatic drive)
allows the operator to control braking simply by
reducing joystick movement.
The machine is equipped with an automatic parking
brake that is activated when the machine is stationary.
Instrument panel
•Theinstrumentpanelisideally
positioned in the operator’s
field of vision.
•Automaticmonitoring,display
and warnings in the event of
abnormal operating conditions.
Well-designed details
•Agenerousstoragespace
including a 12V socket for
operating a cooler is standard.
•Theexible,multi-way
adjustable seat with 3-way
adjustable armrests provides
a comfortable workplace.
•Furtherdetailssuchasa
sliding side window, tinted
glazing and a foot rest
enhance the operator’s
comfort.
PR 734 Litronic PR 744 Litronic
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Basic machine
Engine
PR 734 PR 744
Liebherr Diesel engine D 936-L A6 D 936-L A6
Emission regulations according to 97/68/EC,
Rating (ISO 9249) 150 kW / 204 HP 185 kW / 252 HP
Rating (SAE J1349) 150 kW / 201 HP 185 kW / 248 HP
Rated speed 1,800 rpm 1,600 rpm
Displacement 10.5 l / 641 in
Design 6 cylinder in-line engine, water-cooled.
Turbocharged, intercooled
Injection system Direct fuel injection, pump-line-nozzle system,
electronic control
Lubrication Force-feed lubrication, engine lubrication in an
inclined position up to 45°, on all sides
Operating voltage 24 V 24 V
Alternator 80 A 80 A
Starter 7.8 kW / 11 HP 7.8 kW / 11 HP
Batteries 2 x 170 Ah / 12 V 2 x 170 Ah / 12 V
Air cleaner Dry-type air cleaner with safety element,
aspirated pre-cleaner, service gauge in cab
Cooling system Combi radiator, comprising a radiator for water,
hydraulic fluid (PR 734), charge air, fuel.
Hydrostatic fan drive
2004/26/EC stage IIIA and EPA/CARB Tier 3
3
10.5 l / 641 in
3
Travel drive, control
PR 734 PR 744
Transmission system Infinitely variable hydrostatic travel drive,
independent drive for each frame
Travel speed * continuously variable
Speed range 1 (reverse): 0 - 4.0 km/h / 2.5 mph (4.8 km/h / 3.0 mph)
Speed range 2 (reverse): 0 - 6.5 km/h / 4.0 mph (7.8 km/h / 4.8 mph)
Speed range 3 (reverse): 0 -11.0 km/h / 6.8 mph (11.0 km/h / 6.8 mph)
* Pre-adjusted, all speed ranges can be
customized on the travel joystick
Drawbar pull at
1.5 km/h / 0.9 mph 274 kN 365 kN
Electronic control Electronic engine speed sensing control auto-
Steering Hydrostatic
Service brake Wear-free, hydrostatic (dynamic braking)
Automatic park brake Wet multiple-disc brakes, wear-free, auto matically applied with neutral joystick position
Cooling system Hydraulic oil cooler, inte- Separate oil cooler
grated in combi radiator
Filter system Micro cartridge filters
Final drive Heavy-duty combination spur gear with
planetary final drives, double sealed with
electronic seal-integrity indicator
Control Single joystick for all travel and steering
functions
matically adjusts travel speed and drawbar pull
to match changing load conditions
Undercarriage
PR 734 PR 744
L XL LGP L LGP
Mount Via separate pivot shafts and an oscillating
equalizer bar
Chains Sealed and lubricated chains, single-bar
Links 40 44 44 40 44
Track rollers/carrier rollers
Sprocket segments 5 5 5 5 5
Track pads standard 508 mm 508 mm 812 mm 508 mm 812 mm
20” 20” 32” 20” 32”
Track pads optional 560 mm 560 mm 914 mm 560 mm 914 mm
610 mm 610 mm 965 mm 610 mm
710 mm
22”, 24” 22”, 24” 36”, 38” 22”, 24” 36”
28”
grouser pads, track chain tension via grease
tensioner and hydraulic cylinders
7/2 8/2 8/2 7/2 8/2
Operator’s cab
PR 734 PR 744
Cab Resiliently mounted cab with positive pressure
Operator’s seat Fully adjustable suspended seat
Monitoring Combined analog / LC display, automatic
ventilation, can be tilted with hand pump 40°
to the rear. With ROPS Rollover Protective
Structure (ISO 3471) and FOPS Falling Objects
Protective Structure (ISO 3449) integrated
monitoring, display if abnormal operating
conditions
Drawbar pull PR 734/PR 744
Usable drawbar pull will depend on traction and weight of tractor
Noise emissions
PR 734 PR 744
Operator sound exposure L
ISO 6396 (emission at the operator’s position)
Exterior sound pressure
2000/14/EC (emission in the environment)
12 PR 734 Litronic PR 744 Litronic
= 78 dB(A) LpA = 78 dB(A)
pA
LwA = 111 dB(A) LwA = 112 dB(A)
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Basic machine
Hydraulic equipment
PR 734 PR 744
Hydraulic system Load Sensing proportional pump flow control
Pump type Swash plate variable displacement piston pump
Pump flow max. 209 l/min / 55.2 gpm 260 l/min / 68.6 gpm
Pressure limitation 200 bar / 2,900 PSI 260 bar / 3,770 PSI
Control valve 2 segments, expandable to 4
Filter system Return filter with magnetic rod
Control Single joystick for all blade functions
Dimensions
Refill capacities in US gallons
PR 734 PR 744
Fuel tank 400 l / 105.6 gal 515 l / 136 gal
Cooling system 55 l / 14.5 gal 62 l / 16.4 gal
Engine oil with oil filters 43 l / 11.4 gal 43 l / 11.4 gal
Splitter box 3.1 l / 0.8 gal 6.5 l / 1.7 gal
Hydraulic tank 144 l / 38.0 gal 169 l / 44.6 gal
Final drive L, XL, each 14 l / 3.7 gal 17.5 l / 4.6 gal
Final drive LGP, each 18.5 l / 4.9 gal 19.5 l / 5.1 gal
Dimensions PR 734 L PR 734 XL PR 734 LGP PR 744 L PR 744 LGP
A Height over cab mm 3,258 3,258 3,258 3,434 3,434
ft-in 10’8” 10’8” 10’8” 11’3” 11’3”
B Overall length without attachments mm 4,335 4,335 4,335 4,657 4,692
ft-in 14’3” 14’3” 14’3” 15’3” 15’5”
C Distance idler/sprocket centre mm 2,830 3,240 3,240 2,992 3,316
ft-in 9’3” 10’8” 10’8” 9’10” 10’11”
D Height of grousers mm 65 65 65 71.5 71.5
in 2.56” 2.56” 2.56” 2.81” 2.81”
E Track gauge mm 1,830 1,830 2,180 1,980 2,180
ft-in 6’0” 6’0” 7’2” 6’6” 7’2”
F Total width without trunnions mm 2,381 2,381 2,992 2,541 2,992
(standard shoe width) ft-in 7’10” 7’10” 9’10” 8’4” 9’10”
G Total width over blade-mounting mm 2,724 2,724 3,474 3,000 3,600
trunnions ft-in 8’11” 8’11” 11’5” 9’10” 11’10”
H Ground clearance mm 494 494 494 545 545
in 19” 19” 19” 21” 21”
Tractor shipping weight
lb 38,682 39,890 42,408 46,121 51,324
1
Includes coolant, lubricants, 20% fuel, ROPS/FOPS cab and track pads 508 mm/20” (L, XL) and 812 mm/32” (LGP).
PR 734 Litronic PR 744 Litronic 13
1
kg 17,546 18,094 19,236 20,920 23,280
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Front attachment
Semi-U blade and
PR 734 L PR 734 XL PR 734 LGP PR 744 L PR 744 LGP
Straight blade Semi-U blade Semi-U blade Straight blade Semi-U blade Straight
blade
Blade capacity according to ISO 9246 m3 5.56 5.56 4.10 7.20 6.00
yd
A Height of blade mm 1,400 1,400 1,150 1,545 1,320
ft-in 4’7” 4’7” 3’9” 5’1” 4’4”
B Width of blade mm 3,372 3,372 3,995 3,690 4,520
ft-in 11’1” 11’1” 13’1” 12’1” 14’10”
Width over quick-coupler system
ft-in 9’10” 9’10” 11’6” – –
C Lifting height mm 1,170 1,206 1,215 1,222 1,179
ft-in 3’10” 3’11” 4’0” 4’0” 3’10”
D Depth below ground mm 536 554 559 511 616
ft-in 1’9” 1’10” 1’10” 1’8” 2’0”
E Max. blade pitch 10° 10° 10° 10° 10°
Max. blade tilt mm 780 780 714 930 933
ft-in 2’7” 2’7” 2’4” 3’1” 3’1”
G Width over C-frame mm 3,000 3,000 3,750 3,556 4,034
ft-in 9’10” 9’10” 12’4” 11’8” 13’3”
H Overall length, blade straight mm 5,678 5,948 5,693 6,050 5,935
ft-in 18’8” 19’6” 18’8” 19’10” 19’6”
Operating weight
lb 44,948 46,156 48,771 54,245 60,076
Ground pressure
PSI 10.10 9.10 5.97 11.52 7.11
1
Quick-coupler system optional, LGP version with maximum track pads width 812 mm/32”. When using a quick-coupler system, the installation of
a rear counterweight is recommended.
2
Includes coolant, lubricants, 20% fuel, ROPS/FOPS cab, operator, track pads 508 mm/20” (L, XL) and 812 mm/32” (LGP), semi-U/straight blade.
3
The installation of a rear counterweight (2,200kg / 4,850 lb) is recommended.
2
kg 20,388 20,936 22,122 24,605 27,250
2
kg/cm2 0.71 0.64 0.42 0.81 0.50
3
1
mm 2,994 2,994 3,494 – –
7.27 7.27 5.36 9.40 7.90
3
14 PR 734 Litronic PR 744 Litronic
Page 15
Front attachment
Mechanical PR 734 L PR 734 XL PR 744 L
angle blade Angle blade Angle blade Angle blade
Blade capacity according to ISO 9246 m
yd
A Height of blade mm 1,100 1,100 1,200
ft-in 3’7” 3’7” 3’1”
B Width of blade mm 4,240 4,240 4,590
ft-in 13’11” 13’11” 15’1”
B1 Transport width mm 3,850 3,850 4,175
ft-in 12’8” 12’8” 13’8”
C Lifting height mm 1,190 1,203 1,290
ft-in 3’11” 3’11” 4’3”
D Depth below ground mm 617 648 570
ft-in 2’0” 2’2” 1’10”
F Max. blade angle 25° 25° 25°
Max. blade tilt mm 475 475 735
ft-in 1’7” 1’7” 2’5”
G Width over C-frame mm 2,890 2,890 3,200
ft-in 9’6” 9’6” 10’6”
H Overall length, blade straight mm 5,655 5,925 6,215
ft-in 18’7” 19’5” 20’5”
H1 Overall length, blade angled mm 6,458 6,728 7,105
ft-in 21’2” 22’1” 23’4”
Operating weight
lb 45,680 46,888 54,686
Ground pressure
1
Includes coolant, lubricants, 20% fuel, ROPS/FOPS cab, operator, track pads 508 mm/20”, mechanical angle blade
1
kg 20,720 21,268 24,805
1
kg/cm
3
3.80 3.80 4.90
3
4.97 4.97 6.41
2
PSI 10.24 9.24 11.66
0.72 0.65 0.82
PR 734 Litronic PR 744 Litronic 15
Page 16
Rear attachment
Ripper PR 734 PR 744 PR 744
3 shanks with hydraulic
parallelogram Standard Option pitch adjustment
A Ripping depth (max./min.) mm 507 / 357 807 / 357 749 / 449 749 / 449
ft-in 1’8” / 1’2” 2’6” / 1’2” 2’5” / 1’6” 2’5” / 1’6”
B Lifting height (max./min.) mm 681 / 531 681 / 231 755 / 457 759 / 459
ft-in 2’3” / 1’9” 2’3” / 0’9” 2’6” / 1’6” 2’6” / 1’6”
C Additional length, mm 1,199 1,586 1,569
attachment raised ft-in 3’11” 5’2” 5’2”
D Additional length, mm 1,531 1,937 1,937
attachment lowered ft-in 5’00” 6’4” 6’4”
E Toolbar width mm 2,320 2,184 2,184
ft-in 7’7” 7’2” 7’2”
F Distance between teeth mm 1,000 1,000 1,000
ft-in 3’3” 3’3” 3’3”
Weight kg 1,910 3,295 3,305
lb 4,212 7,265 7,286
Max. pitch adjustment – – 25°
Drawbar PR 734 PR 744
A Additonal length mm 498 435
ft-in 1’8” 1’5”
B Socket pin diameter mm 50 50
in 1.97” 1.97”
C Height of jaw mm 510 521
ft-in 1’8” 1’9”
D Ground clearance mm 397 425
ft-in 1’4” 1’5”
Jaw opening mm 95 95
in 3.74” 3.74”
Weight kg 263 345
lb 580 761
PR 734 Litronic PR 744 Litronic 16
rigid
Page 17
Equipment
Basic machine
Tow switch •
Towing hitch rear •
Towing lug front •
Forestry equipment +
Landfill equipment +
Battery compartment, lockable •
Tank guard, complete +
Refueling pump, electric +
Belly pans, heavy-duty •
Diesel particle filter +
Cold start device, heating coil •
Radiator wide-meshed •
Radiator guard, heavy-duty +
Radiator guard, hinged •
Liebherr bio-degradable hydraulic oil +
Liebherr Diesel engine •
Fan, hydraulically driven •
Fan guard •
Engine cover, perforated •
Engine doors, perforated •
Engine doors, hinged, lockable •
Lugs for crane lifting •
Special paint +
Fuel water separator •
Fuel water separator with electric heater
Air filter, dry-type, dual step •
Pre-cleaner with automatic dust ejector •
Toolkit •
Laser/GPS ready kit (2) +
+
Travel drive
Parking brake, automatic •
Function control, automatic •
Control single joystick •
Load limit control, electronic •
Electronic control •
Travel control, 3 speed ranges •
Hydrostatic travel drive •
Inching brake pedal for PR 734 +
Inching brake pedal for PR 744 •
Emergency stop •
Oil cooler •
Final drives planetary gear •
Safety lever •
• = Standard
+ = Option
(1) = only for PR 744
(2) = only for PR 734
Subject to changes.
Undercarriage
Track frame, closed •
Sprocket segments, bolted •
Master link, two-piece •
Track pads with mud hole +
Track guide center part +
Tracks oil-lubricated •
Track guide +
Undercarriage L +
Undercarriage XL (2) +
Undercarriage LGP +
Track frames, oscillating •
Pivot shaft, separate •
Sprocket segments with recesses +
Electrical
system
Starter 7.8 kW •
Working lights front, 4 units •
Working lights rear, 2 units •
Batteries, cold start, 2 units •
Battery main switch, mechanical •
On-board system, 24 V •
Alternator 80 A •
Back-up alarm +
Beacon +
Horn •
Electronic start lock +
Additional lights, rear +
Additional lights, on lift cylinders +
Operator’s cab
Storage compartment •
Armrest 3D adjustable •
Ash tray •
Pressurized air filter •
Operator’s seat, 6-way adjustable •
Operator’s seat, air suspended +
Fire extinguisher •
Dome light •
Coat hook •
Air conditioning +
Cooler +
FM radio +
Radio preinstallation •
ROPS/FOPS •
Rear mirror, inside •
Safety glass, tinted •
Windshield washer system •
Windshield wipers font, rear and on
the doors, with intermittent function •
Sliding window, left •
Sliding window, right +
Protective grids for windows +
Extension, seat back +
Sun visor •
Socket 12 V •
Warm water heating •
Control and
warning lights
Control travel speed range (digital) •
Control engine coolant temperature
(analog) •
Control fuel level (analog) •
Hour meter (analog) •
Warning light battery charging •
Warning light diesel engine •
Warning light electronic travel
control system •
Warning light travel drive seal,
each side •
Warning light parking brake •
Warning light hydraulic oil temperature +
Warning light fuel water separator •
Warning light fan control •
Warning light pump repleneshing
pressure •
Warning light float position blade •
Warning light oil return filter •
Warning light air filter •
Warning light heater Diesel engine •
Main warning light •
Hydraulic
system
Hydraulic control ripper +
Hydraulic control winch +
Variable flow pump, load sensing •
Oil filter with strainer in hydraulic tank •
Blade quick drop •
Control valve for 2 circuits •
Float position blade •
Hydraulic servo control •
Hydraulic tank oil level control +
Attachments
Mounting plate for external tools +
Drawbar rear, rigid +
Drawbar rear, swivelling +
Counterweight, rear 2,000 kg/4,409 lb (2) +
Counterweight, rear 2,200 kg/4,850 lb (1) +
Counterweight, rear with storage
compartment 2,800 kg/6,173 lb (1) +
Counterweight, rear 3,200 kg/7,055 lb (1) +
Ripper 1 shank +
Ripper 3 shanks +
Straight blade +
Semi-U blade +
Angle blade +
Quick-coupler system (2) +
Winch +
Spill plate for blade +
Options and/or special attachments, supplied
by vendors other than Liebherr, are only to be
installed with the knowledge and approval of
Liebherr to retain warranty.
PR 734 Litronic PR 744 Litronic 17
Page 18
The Liebherr Group of Companies
Wide Product Range
The Liebherr Group is one of the largest construction
equipment manufacturers in the world. Liebherr’s highvalue products and services enjoy a high reputation in
many other fields, too. The wide range includes domestic appliances, aerospace and transportation systems,
machine tools and maritime cranes.
Exceptional Customer Benefit
Every product line provides a complete range of models
in many different versions. With both their technical excellence and acknowledged quality, Liebherr products offer
a maximum of customer benefits in practical application.
State-of-the-art Technology
To provide consistent, top quality products, Liebherr
attaches great importance to each product area, its
components and core technologies. Important modules
and components are developed and manufactured inhouse, for instance the entire drive and control technology for construction equipment and mining trucks.
Worldwide and Independent
Hans Liebherr founded the Liebherr family company in
1949. Since that time, the enterprise has steadily grown
to a group of more than 100 companies with over
32,000 employees located on all continents. The corporate
headquarters of the Group is Liebherr-International AG
in Bulle, Switzerland. The Liebherr family is the sole owner
of the company.
www.liebherr.us
Printed in Germany by Typodruck RG-BK-RP LWT/VM 11003720-2-07.10_enUS
Liebherr Construction Equipment Co.
4100 Chestnut Avenue, Newport News, VA 23607, USA
+1 (757) 245 5251, Fax +1 (757) 928 8701
www.liebherr.us, E-Mail: info.lce@liebherr.com
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