Equipment Guide 2021-09 PR 716 PR 726 PR 736 PR 746 PR 756

Equipment Guide 2021-09

Generation 8

Motor Stage V / Tier 4f

PR 716 PR 726 PR 736 PR 746 PR 756

2 Equipment Guide 2021

Road and Path Construction

Suggested models• PR 716• PR 726• PR 736• PR 746

Arguments for Liebherr crawler dozers• Hydrostatic drive• Optimum grading performance• Liebherr Assistance Systems• Ready Kits available• Simple to transport (folding blade)

Challenges • Seamless integration in logistics• Difficult ground (rocks, sand)• Construction site traffic (personnel, vehicles)• Shift operation

Recommended drive options

Drive• LGP drive • Centre track guide

Front mounted equipment• 6-point blade with folding sides

Rear mounted equipment• 3-tooth rear ripper

Assistance systems• 3D Grade

Cabin• Additional headlights

Safety• Rear view camera

3Equipment Guide 2021

Route mapping with 2 mast laser control

Soil landfill site

Road construction with 2 mast 3D GPS control

Slip road formation

Simple to transport with folding blade


Suggested models• PR 726• PR 736• PR 746• PR 756• PR 766

Arguments for Liebherr crawler dozers• Efficiency of hydrostatic drive• High productivity• Low centre of gravity• Reliability: Guard plate available• Self-cleaning radiator• Good access for maintenance• ROPS / FOPS fitted as standard

Challenges • Dust• Key machine (availability)• Falling coal > conveyor belts• Fire hazard• Shift operation


Drive• LGP drive (except 766)• Sprocket segments with recesses• Door wiper

Front mounted equipment• Coal U-blade

Rear mounted equipment• Counterweight

Base machine• Engine hood safety guard• Engine compartment seal• Turbocharger cover• External air supply, alternator

Cabin• AC cooler cover• Dust filtration for cabin ventilation• Additional headlights• Fire extinguishers

Coal Fields


Dockside coal handling

Coal mining area: Removal of overburden

Coal-fired power station: Stockpiling coal

Road construction in the coal field (Germany)


Suggested models • PR 726• PR 736• PR 746• PR 756• PR 766

Arguments for Liebherr crawler dozers• Hydrostatic drive• Low centre of gravity• Self-cleaning drive• Specialised option kits

Challenges • Dirt, dust and odours• Ingress of material• Damage to tanks and containers• Shift operation


Drive• XL drive• Base plates with dirt evacuation hole• Track guard throughout• Sealing of carrier rollers• Guard rings for final drive• Sprocket segments with recesses

Power pack• Air pre-filter, Top Air or SyKlone

Front mounted equipment• Waste top grille

Rear mounted equipment• Scraper bar at back• Counterweight

Cabin• Additional headlights• Dust filtration for cabin ventilation

Base machine• Reversible fan• Dust filter system

Waste Recycling


Application using rear-mounted counter-weight for a neutral centre of gravity

Soil landfill site

Domestic waste landfill site

Constructing a waste landfill site

Waste compaction



Arguments for Liebherr crawler dozers• Hydrostatic drive• Demand-driven cooling system• Self-cleaning radiator• Good access for maintenance• ROPS / FOPS fitted as standard

Challenges • Dust• Fire hazard• Shift operation• Falling objects• Low ground pressure required

Suggested options

Drive• XL or LGP drive (except PR 766)

Cabin• AC cooler cover

Base machine• Engine compartment seals• Automatic reversible fan• Fire extinguishers• Air pre-filter, Top Air/SyKlone• Radiator guard with fine grille on the front• Engine hood safety guard• Open floor pan• Turbocharger cover• External air supply, alternator

Front mounted equipment• Woodchip U-blade

Rear mounted equipment• Counterweight

Woodchips


Transfer of woodchips in Texas USA

Stockpiling woodchips in Germany

Stockpiling woodchips

Transferring woodchips in Austria


Forestry Applications


Arguments for Liebherr crawler dozers• Hydrostatic drive• Demand-driven cooling system• Self-cleaning radiator• Good access for maintenance• ROPS / FOPS fitted as standard

Challenges • Dust• Fire hazard• Shift operation• Falling objects• Low ground pressure required

Suggested options

Cabin• Branch deflector• AC cooler cover• Guard grille for rear window or rear/all round

polycarbonate cabin window panes

Base machine• All round protection for containers• Air pre-filter, Top Air / Sy-Klone• Reversible fan• Cabin headlight guard grilles• Base machine sealing cabin / engine compartment

Rear mounted equipment• Cable winch



Suggested models• PR 726• PR 736• PR 746• PR 756• PR 766• PR 776

Arguments for Liebherr crawler dozers• Hydrostatic drive• Demand-driven cooling system• Many years of experience in low-temperature

applications• Factory fitted specialised option kits

Challenges • Low surrounding temperatures• Cold starting the machine• Special cabin comfort• Visibility / darkness requirements

Suggested options

Cabin• Insulating glass

Base machine• Webasto water heating unit, priority to cabin• Fuel pre-filter with heated water separator• Engine compartment cover sheets• Cold-resistant operating fluid

Low-Temperature Version (down to -40°C)


Primerskugol Mine – SUEK

Road and pipeline construction, Republic of Sakha (Yakutia)

Working in the dark at landfill site

Clearing coal field overburden at low temperatures

Clearing overburden at high altitudes


High-Temperature Version (up to +55°C)

Suggested models • PR 716• PR 726• PR 736• PR 746• PR 756• PR 766• PR 776

Arguments for Liebherr crawler dozers• Hydrostatic drive• Low centre of gravity• Reversible cooling fan• Many years of experience in high-temperature

applications

Challenges • High surrounding temperatures• Increased cooling requirement for the machine

(service life)• Special demands on cabin comfort• Frequently dust intensive applications

Suggested options

Base machine• Reversible fan

Cabin• Heat-resistant operating fluid• Insulating glass• Insulating glass for skylight• Hydraulic fluid temperature indicator


(t) 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76

R

D1 D3 D4 D5* D6* D7* D8T*

D2 D6XE* D7E

D37-24 D51-24 D61-24

D65-18

D85-18

850M 1650M

750M

650M 1150M 2050M

450K

550K

650K 750K 950K

700K 850L

PR 716 PR 726 PR 736 PR 746 PR 756


Crawler dozer product positioning – Tier IV / V

Minmiales EinsatzgewichtMinimum operating weightPoids minimum en ordre de marchePeso operativo minimoPeso operativo minimo

Maximales EinsatzgewichtMaximum operating weightPoids maximal en ordre de marchePeso operativo massimoPeso operativo máximo

(t) 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76

D9T* D10T2*D8T*

D155-8 D375-8

1050K

PR 756 PR 766* PR 776*


* High drive

Hydrostatischer AntriebHydrostatic driveTransmission hydrostatiqueTrasmissione idrostaticaAccionamiento hidrostático

DrehmomentwandlerTorque converterConvertisseur de coupleConvertitore di coppiaConversor de par

Dieselelektrischer AntriebDiesel-electric driveTransmission diesel-électriqueAzionamento diesel-elettricoAccionamiento diesel-eléctrico


Contents

Overview

Base machine 19

Drive 26

Engine 31

Cabin 37

Equipment 47

Safety 59

Further information 62


Equipment list

Base machine

Engine compartment seals – flaps and panels• Sealing the gaps around the panels prevents

dirt from entering the engine compartment.• Recommended for use with a fine-meshed pro-

tective grille and reversible fan where necessary.• For dirtyand dust-intensive operations (was-

te, coal, woodchips). (See section on fields of application; waste recycling, coal fields and woodchips)

Engine hood safety guard – screw fasteningA safety guard is mounted on the engine hood air vents.

The sheet metal cover on the engine hood prevents material entering into the engine compartment. (Required for woodchip and coal field applications)

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

+ + + + +• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– + + + +• = Standard + = Optional – = not available


Equipment list

Base machine

Closed floor panThe closed floor pan prevents fine-grained ma-terials from penetrating into the underbody and contaminating the engine compartment (fire risk).

Note: Used, in particular, for fine-grained material.

Extended access step – in front of the cabin door This option offers additional standing area and added safety when entering the cabin

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– + + + –• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– – + + +• = Standard + = Optional – = not available


Equipment list

Base machine

Main battery switch – lockable / non lockableThe battery can be isolated from the electrical sys-tem by the main battery switch. This switch is used to secure the vehicle against unauthorised start-up.

Water Heater–Webasto with priority for the cabinThe optional Webasto auxiliary heater is a particu-larly efficient way to ensure a pleasant, comfortable climate. Once activated, the auxiliary heater gene-rates heat in the combustion chamber by burning fuel. Water from the vehicle's cooling system is passed through the heater and is preheated.The unit activates, using a set time, via a display in the cabin. The priority for pre-heating is for the driver's cabin.

This option is recommended for all applications in cold environments.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Base machine

Spade holder – mountedThe spade holder with spade is a factory fitted op-tion. The spade is used to clean the undercarriage.

It is recommended for use with binding material and in heavy dirt applications.

Handles at rear – at the fuel tankThis option provides an additional grip for the driver when climbing into the cabin and provides extra safety when refuelling.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Base machine

Ambient temperature Designated

Liebherr mineral oil 15 – 55 °C Liebherr Hydraulic Basic 100 10 – 45 °C Liebherr Hydraulic Basic 68 -10 – 40 °C Liebherr Hydraulic HVI

Liebherr PAOBiologically degradable

-25 – 45 °C Liebherr Hydraulic Plus -40 – 30 °C Liebherr Hydraulic Plus Arctic

All crawler dozers are factory-fitted with Liebherr Hydraulic HVI.

Liebherr Hydraulic HVI, Liebherr Hydraulic Basic 100 • The oils have particularly good cleaning properties, enabling dirt to be transported

effectively to the filter. The additives contain high reserves specially tailored to mobile applications

• Liebherr hydraulic oils achieve a lifespan of 6,000 working hours and more. Instead of fixed change intervals regular oil analysis results (every 1,000 working hours or minimum once a year) determine when the oil-change is due

• Liebherr Hydraulic HVI covers most standard applications due to its multi-grade properties

• Liebherr Basic 100 is ideal for tropical use, but should not be used in temperatures significantly below 0 °C

Liebherr Hydraulic Plus / Liebherr Hydraulic Plus Arctic• Biodegradable ** • For use in environmentally sensitive areas• Designed for a long service life,

- Normally 10,000 hours of service - Up to 20,000 hours of service possible in selected applications and with good care

• Reductions in fuel consumption of up to 4.5 % proven in tests compared to a stan-dard hydraulic oil and an ester product

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Base machine

Customer benefit• Reliability due to manufacturer warranty • Long life of the hydraulic components • All hydraulic oils are gentle to man and machine (no aggressiveness towards paintwork, hydraulic hoses,

hydraulic components, etc.) • All Liebherr hydraulic oils are miscible and compatible with each other1

Temperature range Biodegradable** Life span use possible

Liebherr Hydraulic Basic 100 0° to +55 °C no noLiebherr Hydraulic HVI* -20° to +40 °C no noLiebherr Hydraulic Plus -30° to +45 °C yes yesLiebherr Hydraulic Plus Arctic -40° to +30 °C yes yes

* Standard filling** Biodegradation (21 days, so-called primary degradation***) according to CEC-L-103-12 ≥ 60% *** The test method considers directly the disappearance of the oil up to the degradation level of water solubility1 This relates to technical compatibility. Mixing limits to comply with biological degradability are not affected.

All Liebherr safety data sheets can be found in the Liebherr lubricant portal: https: / / lubricants.liebherr.com


Branch deflector –standard version, without gridThis option protects the machine from damage from branches.

Note: Of particularly use in forestry operations.

Equipment list

Base machine

Lubrication – Automatic central lubrication systemBearings on the base machine, drive and equipment are mostly maintenance-free. The optional central lubrication system is an ideal addition for bearings subject to extreme operational stress (e.g. self-aligning bearings, front (lift cylinder) and rear (rear ripper) bearing eyes).

Lubricant is automatically fed at regular intervals to the bearings via the lubrication lines.

This reduces manual maintenance, saves time and increases the reliability of the machine.

Technical specification:Manufacturer type: Beka MaxLubricant: NLGI grade 2 greasesFilling weight: 4 kgTimed lubricationLubrication interval: adjustable from 0.5 h to 8 hLubrication interval: adjustable from 1 min to 16 min

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Supplementary tool kit – additional toolsThe supplementary tool kit facilitates maintenance and service work on the machine.The hoses included in the kit allow consumable materials to be changed cleanly and simply.The eyebolts in the kit make it easier to manipulate heavy service components and prevent damage during transport.

Recommended for customers who prefer doing some of their own service and maintenance.

Illuminated licence plate holder On customer request, dozers can also be fitted with a license plate holder.This option is often used for military licence plates. The license plate holder is illuminated as standard.

Equipment list

Base machine

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Oil cooler intake grille – mountedThe fine-meshed intake grille for the oil cooler is part of the Waste Recycling, Wood, Coal, and Forestry package.

The cooler is provided with a fine-meshed grille for dust-intensive operations. This reduces the amount of dirt entering the oil cooler and prevents damage.

Rear oil cooler – covers on top & sideThe covers protect the oil cooler from falling objects.

This option is part of the Waste Recycling, Wood, Coal, and Forestry package.

Equipment list

Base machine

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– – – + +• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Base machine

L – DriveThis drive is suitable for manoeuvrability and high ground pressure.Areas of application are with hard subsurfaces or for compacting bulk materials such as coal and woodchips etc. Warning: High ground pressure

Important: This option is only available with the PR 736 G8 for IIIA versions

XL – DriveAn optional drive for optimum traction on normal ground and gradients due to the long track bearing surface.This drive guarantees smoother running for the best grading performance.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

+ + + – –• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Centre track guideThe centre track guide takes up the sideways forces when travelling over slopes and through curves. In addition, this version ensures increased stability and reduced tension in the track belt; –> reduced wear.

Attention: In every case a centre track guide or a continuous track guard must be configured.

Equipment list

Base machine

LGP – DriveAreas of applications are low load-bearing soils, such as clay.

Warning: Low ground pressure than L and XL – Drive

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Drive

Full-length track guardReasoningThe full-length track guide takes up the sideways forces when travelling over slopes and through curves. In addition, this version ensures increased stability and reduced tension in the track belt; –> reduced wear. Important: The track guard protects against the ingress of foreign matter.

Sealing of carrier rollersDescriptionAs an option seals are installed on the inner edge of the carrier rollers. ReasoningSealing the carrier rollers provides additional pro-tection for the carrier rollers against dust and dirt. Used in particular for waste handling applications.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Recessed sprocket segmentsAs an option the sprocket segment can have additional recesses in the sides, which facilitates improved self-cleaning properties –> less wear on the drive.

These segments are used in particular for applica-tions with binding materials (clay and coal, etc.).

Equipment list

Drive

Standard sprocket segmentsThe standard sprocket segments serve to transfer power from the propulsion drive to the track links.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

• • • + +• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Drive

Protection ring final drive –for mechanical sealThis option protects the mechanical seal from damage. Required for landfill site operations where there is a risk of damage to the mechanical seal (wire, fabric, bulky waste, etc.).

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Tumbler scraper – for coal mining applicationsTrack tumbler scrapers prevent coal deposits accumulating between the drive and the super-structure.

Application: Typical equipment version for dirt-intensive applications (coal, waste recycling, etc.)


Equipment list

Drive

Additionally sealed carrier – rear carrier rollers set higherThe higher rear carrier rollers are part of the waste recycling package.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– – – – +• = Standard + = Optional – = not available


Equipment list

Motor

SyKlone pre-separatorOptional dust filtration to the standard installed pre-separator on the air filter.The two-stage pre-separator is used in particular for very dusty applications, such as stockpiling woodchips.

Top Air pre-separatorOptional dust filtration for the standard installed pre-separator on the air filter.Dust that is drawn in is removed via the connecting line to the exhaust system.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Fuel pre-filter with water separator – not heatedFuel pre-filters with water separators are used to keep dirt out and to increase the service life.

Equipment list

Motor

External air supply, alternator – suction grilleThis optional extra enables external air to be drawn in free of dirt and provides for an increased service life of the alternator with dust intensive applications.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

• • • • •• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Motor

Fuel pre-filter with water separator – electrically heatedHeated fuel pre-filters with water separators are used to keep dirt out and to increase the service life.

As an option the fuel pre-filter can be additional fitted with heating. (Diesel fuel coagulates at minus 180C)

This type of equipment is particularly useful in low-temperature applications. (See low-temperatures version)

Quick refuelling couplingThe quick refuelling coupling on the outside of the fuel tank offers both additional safety as well as an ergonomic advantage for the driver. In addition, the quick refuelling coupling, with the included pump, provides a flow rate that is approximately 22 times faster than a conventional refuelling pump.

Comparison:Declaration of rapid refuelling pump data sheet: 800L/minDeclaration of refuelling pump drawing: 50L/min car fuel pump: approx. 30L/min

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Fine grille for radiator guardFor dust intensive applications the radiator is fitted with a fine mesh grille. This protects the radiator. As a result, dirt does not get through the radiator into the engine compartment.

Recommended for use with the seals in the engine compartment and with a reversible fan.

Equipment list

Motor

Reversible fan driveThe reversible fan drive is particularly suitable for heavy dust applications. The interval and the duration of the reverse operation can be selected by the driver.In addition, the reversible fan drive automatically delivers the cooling output required. After a pre-selectable time, the direction of the fan is changed in order to loosen the dirt and dust on the rear side of the radiator and to ensure the efficiency of the cooling fan.

Note: Used in particular for heavy dust applications

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Motor

Front fan arrangement –Hinged fan, boltedThe fan is unscrewed with the applicable tool to allow it to swivel forward.

Scraper brushes for V-belt – for wood chip applicationsWiper brushes protect the V-belt from dirt, waste chips or dust and are used to ensure functional cleanliness and maintain the quality of the V-belt.

This option is particularly recommended in wood chip, coal, and forestry applications.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Motor

Reversible fan driveThe reversible fan drive is particularly suitable for heavy dust applications. The interval and the duration of the reverse operation can be selected by the driver.In addition, the reversible fan drive automatically delivers the cooling output required. After a pre-selectable time, the direction of the fan is changed in order to loosen the dirt and dust on the rear side of the radiator and to ensure the efficiency of the cooling fan.

Note: Used in particular for heavy dust applications

Rapid engine oil drainOn customer request, a rapid drainage device can be supplied for emptying the engine oil pan. This device allows easier access to the drain valve and quicker engine oil changes. By coupling a suction pump to the rapid oil drainage device, oil can be simply evacuated out without any mess or dirt.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Motor

Quick oil drain for PVG / hydraulic fluid(Splitter box)The quick drainage device for hydraulic fluid is offered as an option and enables easier access to the hydraulic tank drain valve and quicker oil change.

Jump start aid – 2-pin connectorThe 2-pin plug on the machine allows it to be started quickly and easily with another machine when the battery is low or discharged.

Used in particular for extreme low temperature applications.

Attention: only jump start the machine with a 12 V battery and approx. 180 Ah.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Motor

Turbocharger fire guard coverThe optional turbocharger cover plate protects hot surfaces of the turbocharger from easily combusti-ble materials (dust).

Particularly recommended for use with readily combustible materials (e.g. coal, wood, recycling, paper production, etc.)

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Cabin – Exterior

Rear view mirror – not heatedApplication:In confined spaces. When there is danger to people in the work area.

Reasoning:Provides improved visibility or a further option for good view to the rear. Inexpensive alternative to camera systems.

Technical description:2 x rear view mirrors, left and right, 100 mm x 250 mm Continuous wide-angle effect for enlarged viewing angle.

Exterior mirror – heatedApplication:In confined spaces. When there is danger to people in the work area and cold temperature applications.

Reasoning:Provides improved visibility or a further option for good view to the rear. Inexpensive alternative to camera systems. Automatic defrost

Technical description:2 x rear view mirrors, left and right, 100 mm x 250 mm Continuous wide-angle effect for enlarged viewing angle.Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Cabin – Exterior

Safety guard for AC condenserProtects the air conditioning condenser from falling parts.Typical used for coal (under conveyor systems).

(See section on fields of application for coal and woodchips)

Operators platform seals – cab and containersSeals the gaps between the cabin, the container and base machine to prevent the ingress of dirt.Recommended for use with dirty and dust-intensive operations. (Refuse, coal, wood chips)

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Drive

Driver's cab canopyThe optional canopy gives additional protection for the roof from falling objects.

Note: Used in particular for waste recycling, wood chips, coal and forest use. (see section on Areas of Application)

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Driver cabin – interior

Grammer Comfort driver’s seatApplication:Standard use with shock loads

Reasoning:Cost-effective solution for a large range of opera-tions. Standard Liebherr seat already meets a high standard, for example, in adjustability, seating area and high backrest, etc.

Technical description:Air-cushioned driver's seat, manual adjustment of weight, backrest angle and seat position

ISRI Premium driver’s seatApplication:For use under frequent shock loads. High ergono-mic demands in the workplace.

Reasoning:Optional Isri driver's seat for perfect seat comfort.With fully adjustable backrest, suspension and armrests, the driver can individually adjust the seat to a comfortable sitting position. This seat also has a fitted fan that blows air through ducts in the backrest. (Seating climate)

Technical description:Low frequency air suspension driver’s seat. Electri-cal weight setting. Adjustable backrest angle, seat position, seat angle, lumbar support (ergonomic shape of back supports), and seat heating

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


AC – Automatic air conditioningTechnical descriptionCondenser above the rear cabin. Compressor in the engine compartment. Separate control element in the top left of the roof liner. This allows for control of the interior temperature.

Function:Automatic control of blower fan and temperature, with adjustable control of air distribution and defrost function (electrical control of the functional range). X air vents at Y locations in the cabin.

Difference over Generation 4:Electronic control of interior climate air flaps (comfort).Difference over Generation 6:Individual control display for direct operation, fully automatic mode including blower fan control

Fire extinguisher, 6 kgOptional 6 kg hand-held fire extinguisher is ins-talled in the cabin.The ABC powder extinguisher has a fine salt mixture extinguishing agent, suitable for fires with solid (A), liquid (B) and gaseous (C) substances. It is therefore suitable for fighting fires with flammable liquids and solid materials such as wood, paper or textiles.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Storage nets, tie-down strap and storage compartmentThe optional storage nets and tie-down straps give additional options for storage and enhance comfort and safety in the cabin.

The number of storage options can vary according to cabin size.

Radio StandardThe radio is fitted as standard and has a tuner and station memory (permanent preset station memory for 24 stations), as well as front AUX-IN, SD card slot and USB connection for MP3 player. 2 x 20 watt speakers are also fitted.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Comfort RadioAs an option the Comfort Radio can be fitted, featuring all the basic features of the standard radio, with the addition of a Bluetooth function.

Foot support on front panel – mountedOptional footrest on the front console for increased driver comfort.

Recommended for use on sloping sites.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Traction hydraulics control –proportional joystick without inch pedalUsing a proportional joystick, the driving speed can be set directly from the joystick.

Traction hydraulics control –proportional joystick with inch pedalThe inch pedal helps to make it easier to switch from a machine with a conventional drive (torque converter) to a hydrostatic drive.

In addition, the driving speed can be selected directly via the proportional joystick.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Traction hydraulics control – Screened joysticks, with inch pedalThe optional de-accelerator / brake pedal superim-poses the selected travel speed on the joystick and reduces the travel speed. When fully activated, the multi-disc brake in the final drive activates.

The inch pedal simplifies changing from a machine with a conventional drive (torque converters) to a hydrostatic drive.

Important: The detented joystick limits the possibili-ties of the hydrostatic drive.The driving speed can only be set using the foot pedal or the push buttons on the joystick.Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Cabin – Lighting

Ascent and descent lighting (on entry side)LED lighting of the boarding area. Activation out-side the cabin via permanently illuminated buttons, as long as the main battery switch is not switched off. The lighting also comes on when the machine is switched off and the ignition key is removed.In both cases, the light stays on for about 5 minutes.

Cabin work spotlightApplication:At dusk and during night time operation (shift work) or in closed spaces.

Reasoning: New lighting design for Generation 8. Perfect illumination of the work area. No operator glare from the engine hood.

Options: • Work spotlights on cabin, 4x front,

2x rear halogen (standard)• Work spotlights on cabin, 4x front,

4x rear halogen• Work spotlights on cabin, 4x front, 2x rear LED• Work spotlights on cabin, 4x front, 4x rear LED

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Cabin – Lighting

Work spotlights on lift cylindersApplication:At dusk and during night time operation (shift work) or in closed spaces.

Reasoning:New lighting design for Generation 8. Ideal illumi-nation of the work area. No operator glare from the engine hood.

Options: • Work spotlights on lift cylinders 2x Halogen

(standard)• Work spotlights on lift cylinders 4x Halogen• Work spotlights on lift cylinders 4x LEDAvailability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Equipment – front mounted

Straight bladeApplication:Where maximum penetration forces are required: Lower thrust than Semi U blade. Sideways push off not possible.

Reasoning: Good rolling characteristics. Solidly constructed, cylinder protection as standard, chan-geable cutting blades, cutting angle adjustment.

Technical description:Hard-faced, wear-resistant surface, Hardox 400

Semi U bladeApplication:All round universal blade fitment. Used where pushing power is required. Attention: Less penetra-tion force than with straight blade. Sideways push off not possible.

Reasoning:Good rolling characteristics. Sturdy structure, hyd-raulic cylinder guard fitted as standard, replaceable blade edge, cutting angle adjustment.


Blade capacity PR 736 G6 PR 746 G6

L-DriveXL-DriveLGP-Drive 4.1 m³ 6.0 m³

Blade capacity PR 736 G8 PR 746 G8 PR 756 G8

L-Drive 7,2 m3

XL-Drive 5,56 m3

LGP-Drive (Single bogie rollers) 9,46 m3

L-Drive (Double bogie rollers) 8,92 m3

L-Drive (standard bogie rollers and Single bogie rollers) 8,92 m3


Equipment list


Rigid 6-point bladeApplication:Flexible blade fitment. Ideal for grading work and pushing material sideways. Attention: Lower pushing performance. Only for use in conjunction with rear ripper or counterweight.

Reasoning: Good rolling characteristics, standard cutting angle adjustment. Construction is not so solid as the semi U blade, and can move in 6 directions.


6-point blade with folding sidesIn addition to the standard rigid 6-point blade, the 6-point blade can have folding sides to reduce the width for transport when folded in.

Furthermore, the simple locking mechanism can be operated with a few hand movements.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

• • + – –• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


* Transport width 3,000 mm with 711 mm base plates, Transport width 3,202 mm with 812 mm base plates.

Transport width in mm

Under-carriage

PR 716 G8

PR 726 G8

PR 736 G8

6 way blade without folding sides XL 2,896 2,999 3,496

6 way blade with folding sides XL 2,467 2,498 2,990

6 way blade without folding sides LGP 3,226 3,660 3,876

6 way blade with folding sides LGP 3,226 2,990 3000/3202*

Blade capacity in m³

Under-carriage

PR 716 G8

PR 726 G8

PR 736 G8

6 way blade XL 2.92 3.33 4.78

6 way blade LGP 3.30 3.87 4.84

Note: Shield capacities are identical for the 6-way shield with hinged corners.


Equipment list


U-bladeTechnical description:Hard-faced, wear-resistant surface, Hardox 400

The U blade differs from the semi U blade both due to the larger side parts and in the larger capacity.It is the ideal fitment for demanding work geared to output, such as, moving large quantities over large distances (stockpiling and removal work, moving bulk materials, loading hoppers) and pushing with loaders.However, not suitable for hard and sedimentary materials.

Blade capacity in m³

PR 756 G8 11.8


Equipment list


Cutting system attachment, offset cuttingApplication:In the lower area of the blade, sloping cutting edges are screwed on to the left and right, as an option.

Reasoning:This option enables better penetration behaviour, but creates side furrows in the material.The thicker (heavy duty) design provides more wear material, but reduces the penetration charac-teristics of the blade.

Cutting system attachment, straight cuttingApplication:In the lower area of the blade, straight cutting edges are screwed on to the left and right, as an option.

Reasoning:This option is particularly suitable for fine grading as it does not create side furrows. However, in contrast to the sloping cutting edge option, these cutters have notably poorer penetration characte-ristics.

The choice of suitable cutting edges depends on the blade type.Availability

PR 716 PR 726 PR 736 PR 746 PR 756

• + + • •• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– • • • •• = Standard + = Optional – = not available


Equipment list


Blade attachment – centre overflow plateOptional blade attachment prevents material overflowing from the blade, protecting components behind the blade.

Attention: Does not increase blade capacity!

Blade attachment –Full blade width overflow plateThe optional full blade width overflow plate provi-des protection across the full width of the blade and also prevents material flowing over the blade in front of the tracks.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

• + + + +• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Blade attachment – Waste grilleOptional blade attachment grille for increasing the blade capacity with low density materials (waste). The grille provides good forward view.

Push frame wear-resistant plate – welded onOptional wear-resistant plate for push frame, which is welded on directly to the existing push frame.

This option is used, in particular, for applications with heavy wear and tear, such as for stones and rocks.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Inboard push frame versionOptional inboard push frame with tilting device for 6-point blade.

This fitment allows for blade movement in 6 directions (lift, lower, l/r swivel and l/r tilt). Advantage: The outer dimension of the machine is restricted to the transport size.

Outboard push frame versionOptional outboard push frame with tilting device for mechanical swivel blade enables better transmissi-on of force with tough applications.

Advantage: Better transmission of force than inboard push frame. Also available for LGP drive.

Disadvantage: The blade must be swivelled mechanically therefore restricting the track width.

Note: Only available in conjunction with a mechanical swivel bladeAvailability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Tilt cylinder guard – mountedUsed with external push frames when there is a risk of damaging the tilt cylinder.

Typical for rock quarry operations or, for example, in waste recycling.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756




Equipment list

Equipment – rear mounted

Single tooth rear ripperOptional rear ripper for material that is difficult to rip or breaks into large lumps.

High depth of penetration in hard sub-surface (typi-cal for PR 756 upwards). This option is particularly suitable deep ripping of hard material.

Application:Typical equipment version for PR 756 or larger

3 tooth rear ripperOptional 3 tooth rear ripper without pitch adjustment.

Larger ripping surface than with single tooth rear ripper, but lower penetration force (typical for PR 716 – PR 746, and crawler loaders).

Application:Typical equipment versions for PR 716 – PR 746 and LR 626 – LR 636.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


5 tooth rear ripperOptional 5 tooth rear ripper without pitch adjustment.

Particularly suitable for light materials, such as for soil or spreading materials and adding lime.

Application:Typical equipment versions for PR 726 and PR 736.

CounterweightOptional counter balance weight required for applications where a rear ripper is not used (centre of gravity).

Important: This required for a neutral location of the centre of gravity and enables better traction when working on slopes.

2,000 kg counterweight is only available on PR 736 G8.

3,200 kg counterweight is only available on PR 746 G8.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756

+ + + – –• = Standard + = Optional – = not available


Equipment list


Rear mounted scraper barOptional scraper bar prevents waste material accu-mulating between drive and attachments.

Application: Typical equipment version for heavy dirt applications (waste, etc.).

Cable winchOptional cable winch (45mm) is particularly suitable for pulling various shapes of load and securing the machine when working on slopes.

The cable drum is hydraulically driven in open circuit.

Application:Typical equipment version for forestry applications

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Safety

Fairlead (4 rollers)The cable winch is augmented with guide rollers.These ensure that the cable is neatly wound onto the rope drum.

Important: For use in operations where the cable may run at an angle (e.g. hauling loads in forestry operations)

Coupling mounting panel – for mounting third-party attachmentsOptional mounting plate for fitting of third-party equipment. Additional equipment, such as a towing hitch, not included in the Liebherr product portfolio, can be mounted directly on the mounting plate.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list


Trailer couplingThe towing hitch is attached directly to the base machine and is used, for example, for pulling rollers in ground compacting work.

Crane loading hooks – rearOptional eyelets attached to the rear for crane loading.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– + + – –• = Standard + = Optional – = not available

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Safety

Acoustic reverse warning deviceDescriptionNoise level: 87 – 112 dB at approx. 1.2 m distance Housing: Glass reinforced nylon Frequency: 700 – 2800 HzOutput: 19.1 W

ReasoningThis option gives an acoustic warning when rever-sing and has an additional safety function.The acoustic tone hereby generated provides for additional safety.

Acoustic reverse warning device with BBS broadband soundReasoningThe BBS broadband sound is more pleasant to the ear and propagates more rapidly. The sound is also easier to localise and indicates which vehicle is re-versing. Due to improved awareness, the reaction of people to the alarm is stronger.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Safety

Reversing cameraApplication:Where space conditions are restricted and there is danger to people in the work area.

Reasoning:Direct integration into the machine display. Auto-matically activated when reversing. Factory fitted.

Technical description: Camera resolution: 640px x 480pxAngle of vision: 60°

Automatically activated when reversing

Anti-theft protection via the ignitionDescription:The machine can only be started with the key specific for the corresponding machine. When the key is inserted into the ignition lock, the machine communicates with the corresponding key and unlocks the machine.

2x operator keys (blue) and 1x master key (red) are provided on sale of each machine. The master key is used for teaching-in additional operator keys.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Equipment list

Safety

Beacon – yellow, fixed The rotary beacon facilitates better visual recognition, marking and the consequent securing hazardous areas.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756



Further information

Overview

Drive• Nomenclature• Drive versions• Reasons for Highdrive / Lowdrive• Base plates• Track tension

6162646465

Equipment• Overview of front mounted equipment• Rationale for type of blade

6767

Needs assessment / calculating output• Calculating output (graphs, influencing factors, material tables, etc.)• Ripping performance diagram

6871

Machine Control and Assistance Systems • Comparison of systems (1D, 2D, 3D)• Free Grade, Definition Grade, 3D Grade• Basics of satellite navigation / geographic reference systems• Ready Kits

74757879


Drive

Drive – Nomenclature

Drive frame Guide wheel

Equaliser bar

Carrier roller

Track roller

Tensioning device

Sprocket

Thru-axle

Final drive(mounted on main frame)

Track beltwith base plate


Drive

Drive Options

L – DriveThis drive is suitable for manoeuvrability and high ground pressure.Areas of application are with hard subsurfaces or for compacting bulk materials such as coal and woodchips etc. Warning: High ground pressure

Important: This option is only available with the PR 736 G8 for IIIA versions

XL – DriveAn optional drive for optimum traction on normal ground and gradients due to the long track bearing surface.This drive guarantees smoother running for the best grading performance.


Drive

Drive Options

LGP – DriveThis drive is suitable for low ground pressure and manoeuvrability.Areas of applications are low load-bearing soils, such as clay.

Warning: Low ground pressure

FTB (Free Turning Bushings) trackBushing rotates freely regardless of track link. This drive is used mainly with soft, very abrasive materi-als, such as sand and sand-clay mixtures.

Rolling off of track bushing in the sprocket => reduced friction => reduced bushing and sprocket wear. Attention: Not suitable for rocks and stones–> Risk of damage.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756

– – + – –• = Standard + = Optional – = not available


Drive

Base plates

Available grades of base plates:

MS (Moderate Service)

ES (Extreme Service)

SESS (Super Extreme Service Shoes)

Standard version for less abrasive material (light profile shape)

Optional version with a stronger profile shape (thicker plate with increased web-bing) –> more wear material for abrasiveterrain

Standard version for PR 756 or higher (heavy profiled shape)

High Drive

✔ The sprocket is not in the dirt zone, i.e. less wear on sprocket and bushings

✔ The gearbox seal is above the dirt zone✔ The gearbox has better protection against

shock loads✔ Bogie guide wheels on large crawler dozers

reduce vibrations✘ Higher noise levels due to longer unsupported

track length✘ Increased shaft wear on the track belt due to

extra deflection at the guide wheels✘ Higher centre of gravity✘ More components and therefore greater initial

cost

Low Drive

✔ DThe centre of gravity of the machine is lower – lower tendency to overturn when working on embankments

✔ Lower noise emissions✔ Fewer components => lower initial cost: e.g.,

only 2 guide wheels instead of 4✘ The sprocket is in the dirt zone, i.e. more wear

on sprocket and bushings✘ The gearbox seal is in the dirt zone

=> as a result, double shaft seal used with Liebherr!

✘ With shock loads the gearbox is more exposed

Drive

Difference between High Drive and Low Drive


Drive

Track tension

Tip: Check the track tension regularly and retighten, if necessary, as the drive wears. A track that is too tight increases build-up of dirt and wear and tear. A too loosely tensioned track can jump and result in damage to the drive train.

Check track tension:1. 1. Machine is in maintenance position2. Have a straight edge ruler ready3. Release load on tracks: Drive the machine forwards and backwards4. Place the ruler in the area between guide wheel and carrier roller

Influence of track tension on bush wear

Bush wear

500 1,000 1,500 2,000 2,500 3,000 3,500

100 %

80 %

60 %

40 %

20 %

Track

tens

ion to

o tigh

t

Track

tensio

n ideal

75 % more

Service life

Service Life

Continued on next page


Drive

Track tension

Measure the sag between the lower edge of the ruler and the track link. The track must have a sag of 30 to 40 mm between the guide wheel and the carrier roller or between the sprocket and carrier roller.

If you have any further questions, please contact the sales personnel at the Liebherr factory in Telfs.


Semi U blade Straight blade 6-point blade

4 directions of movement 4 directions of movement 6 directions of movement

Blade type Schubleistung Eindringverhalten LenkverhaltenSemi U blade high good goodStraight blade medium very good very good6-point blade low very good very good

Equipment

Overview of front mounted equipment

Equipment

Rationale for type of blade


Performance CalculationNeeds Assessment / Performance Calculation

Maximum pushing performance for semi U blade 1)

The diagrams are based on a series of tests under varying conditions of use. Please note the correction factors:

lm³/h Fördermenge1400

PR 7561300

1200

1100

1000

900

800

700

600

500

400

300

200

100

10 20 30 40 50 60 70 80 90 100 110 120 130 140

Förderstrecke150 m0

PR 746

PR 736

PR 726

Legend: t cycle time in secondsD pushing distance in metresV driving speed in kph

t [s] = +D [m] * 3.6

vforward [kph]D [m] * 3.6

vbackwards [kph]

Feed path

lm³/h feed rate


E�ektive Schildkontur

W

H´

H´

W

Z

0,4 W2 H´

Z

Performance Calculation (blade capacity)

Blade capacity: V = 0,8 * W * (H')2 + Z * H' * (W - Z) * tan α

Needs Assessment / Performance Calculation

U blade and semi U blade

Semi U and U blade

Effective blade contour

Blade fill for semi U and U blade


-30 -20Gefälle

-10

0,40

0,60

0,80

1

1,20

1,400 +10 +20 +30

Steigung%

Attention:Swivel blade devices are not suitable for achieving large pushing performance. Depen-ding on the operating conditions, the swivel blade only achieves 50 - 75% of the pushing power of a straight blade.

Incline % Gradient

OperationPractised 1.00Average 0.80MaterialLoose pile 1.20Difficult to separate, frozenWith tilt cylinder 0.80Without tilt cylinder 0.71Difficult to push (dry non-binding material) or very sticky material, ripped or blasted rocks

0.60 - 0.80

Slot dozing (trenches)Visibility conditionsDust, rain, snow, fog or darkness 0.80Efficiency50 min/h 0.8440 min/h 0.67Blade equipmentSwivel blade 0.50 - 0.75Light material U blade 1.20Gradients(see diagram)

Performance Calculation (Correction factors)Needs Assessment / Performance Calculation

Meter pro Sekunde x 1000

Obere BodenschichtLehm, Ton

GletschermoräneVulkanisches Gestein

Sedimentgestein

Granit

BasaltTrappfels

SchieferSandsteinSchlu�mergelTonschieferKonglomeratBreccieKalziumkarbonatKalkstein

Metamorphoses Gestein

TonschieferTafelschiefer

KohleEisenerz

reißbar

Mineralien und Erze

0 0,5 1 1,5 2 2,5 3 3,5 4

bedingt reißbar nicht reißbar


Rippable materials (PR 756)Needs Assessment / Performance Calculation

Represented by the seismic wave speed of the materials. With single and multi-tooth rippers

Seismic wave speed

Metres per second x 100

OverburdenLoam, clay

Glacier moraineVolcanic rock

Sedimentary rock

Granite

BasaltHornblende rock

SlateSandstoneMarlClay shaleConglomerate materialBrecciaCalcium carbonateLimestone

Metamorphic rock

Clay shaleSlate slabs

CoalIron ore

Rippable

Minerals and ores

0 0.5 1 1.5 2 2.5 3 3.5 4

Partially rippable Non-rippable


OverviewMachine Control and Assistance systems



Machine Control and Assistance systems

2D – 3D system comparison

2D Systems

• Producing horizontal or inclined grades to a high level of accuracy

• Suitable for small to medium-sized construction sites

• Used for creating sports fields, road and car park construction, and constructing industrial facilities and halls.

3D Systems

• Creating large grades and complex three-dimen-sional surfaces

• Suitable for medium-sized to very large const-ruction sites

• Used for road and rail track construction, lands-caping golf courses, constructing large industrial facilities, earthworks and landfills, etc.



Liebherr Operator Assistance System (OAS)

Free Grade (Blade Stabilisation)• Creation of a formation level: flat surfaces,

ramps, dams• Active blade stabilisation (longitudinal / transverse

inclination) when grading• Increased productivity with simultaneous time

saving• Improved quality with less experienced opera-

tors, less stress for experienced operators• Greater safety on the construction site as more

attention is given to what is going on around the machine

Definition Grade (Blade Inclination Control)• Basic modelling of 2D surfaces• Automatic / active position control of the blade

to a specified target inclination• Operation without additional equipment, e.g.

GNSS receiver, base station, etc.• Operation independent of local conditions,

satellite reception, Internet, etc.• Savings on costs (no additional equipment /

hardware necessary)• Increased productivity with simultaneous time

saving• Improved quality with less experienced ope-

rators, stress-free comfort for experienced operators

• Greater safety on the construction site as more attention is given to what is going on around the machine

Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Availability

PR 716 PR 726 PR 736 PR 746 PR 756


Free Grade / Definition Grade is factory fitted and calibrated as standard in the PR 716 – 756 G8 emission stage V machine types.

Free Grade / Definition Grade is factory fitted and calibrated as standard in the PR 716 – 756 G8 emission stage V machine types.



Liebherr Operator Assistance System (OAS)

3D – Grade• Factory installed, roof mounted Topcon• Modelling of complex 3D site models• Automated 6-way blade control• Exact positioning of the blade relative to a target

profile (terrain model)• Theft protection, no need to mount/dismantle

mast, smart/intelligent• Full integration into Construction 4.0• Roof-mounted system – dispenses with daily

mounting of masts on the blade.

Factory fitted roof-mounted Topcon system only available for PR 716 – 726 –736 G8 machine sizes.

Factory fitted Ready Kits from Leica and Trimble are available for the 746 – 756 G8 machines.

Availability

PR 716 PR 726 PR 736 PR 746 PR 756




3D Grade – factory-fitted roof-mountedgrading system (Topcon)

MC-i4 Communication UnitThis interchangeable module houses a radio modem, a mobile modem and the LongLink™ module.

GNSS Receiver GR-i3FThese fully integrated GNSS receivers capture signals from multiple satellite systems in order to enable precise positioning of the dozer at any one time.

Intuitive Display GX-55This robust display features a light and compact aluminium housing with integrated LED light bars, a graphical user interface and a fast processor.

MC-X1 Control ComputerThis future-proof, compact and ro-bust unit was specially developed for machine control. This also took into account future add-ons.

TS-i4 IMU SensorsThe IMU sensors on the vehicle and the blade deliver data at high speed so that the blade remains on target even at maxi-mum speed.



Available 1D, 2D and 3D versions available for each fitment

Ready Kits for Liebherr crawler dozers

Liebherr offers factory fitted Ready Kits for control from various manufacturers. These in-clude all preparatory work on the machine that is necessary for mounting of an automatic control at a later date. This includes electrical components as well as all the brackets and plug connectors.

Liebherr Assistance Systems and Ready Kits are not available for all blade types and emission tiers.

Please contact Liebherr sales personnel for any queries regarding availability of Liebherr Assistance Systems for different types of crawler dozer.

* Available factory fitted

1D 2D 3D

Available equipmentDual IMUs

Dual IMUs

Single Mast Laser

Dual Mast Laser

Single Mast GNSS

Dual Mast GNSS

Single Cab

GNSS

Dual Cab

GNSS

Single TPS / UTS

Free & Definition Grade ✔ * ✔ *

3D Grade (Topcon) ✔ ✔ * ✔

Trimble Earthworks Ready Kit ✔ ✔ ✔ ✔ ✔ ✔ ✔

Leica Ready Kit ✔ ✔ ✔ ✔ ✔ ✔ ✔ ✔

Topcon Ready Kit Upon request Upon request



Ready Kits for Liebherr crawler dozers

Brackets for roof mounted antennas

Mounting base and connections for display / interface

Wiring including plug connections

Brackets for mounting masts and IMU (trans-verse tilt sensor)


Available 1D, 2D and 3D versions available for each fitment



© DB AG

The Liebherr Group of Companies

Wide Product RangeThe Liebherr Group is one of the largest construction equipment manufacturers in the world. Liebherr’s high-value products and services enjoy a high reputation in many other fields. The wide range includes domestic appliances, aerospace and transportation systems, machine tools and maritime cranes.

Exceptional Customer BenefitEvery 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 applications.

State-of-the-art TechnologyTo 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 in-house, for instance the entire drive and control technology for construction equipment.

Worldwide and IndependentHans Liebherr founded the Liebherr family company in 1949. Since then, the family business has steadily grown to a group of more than 140 companies with nearly 48,000 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.com

Liebherr-Werk Telfs GmbHHans Liebherr-Straße 35, A-6410 Telfs +43 50809 6-100, Fax +43 50809 6-7772www.liebherr.com, Email: [email protected] www.facebook.com/LiebherrConstruction

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Documents

Equipment Guide 2021-09 PR 716 PR 726 PR 736 PR 746 PR 756