liebherr track tensioner tool

8/14/2019 Liebherr Track Tensioner Tool

1/8

Technical Description PR 744Crawler Tractor

Engine Output 184 kW/250 hpOperating Weight 24,605 29,115 kg/54,245 64,188 lb

litronic


2/82 PR 744 Litronic

Basic machine

EngineLiebherr diesel engine D 936-L A6

Emission regulations according to

2004/26/EEC Stage IIIa, EPA/CARB Tier 3

Rating (ISO 9249) 184 kW / 250 hp

Rating (SAE J1349) 184 kW / 247 hp

Rated speed 1,600 1/min

Displacement 10.5 l / 641 in3

Design 6 cylinder in-line engine (wet-sleeve),

water-cooled, turbocharged, intercooled

Injection system Direct fuel injection, pump-line-nozzle system

Lubrication Pressurized lube system, deep oil pan for

inclination up to 45-degree

Operating voltage 24 V

Alternator DC / 80 A

Starter 7.8 kW / 11 hp

Batteries 2 x 170 Ah / 12V

Air cleaner Dry-type air cleaner with safety element,

aspirated pre-cleaner with automatic dust

ejector and dash-mounted restriction indicator

Cooling system Water cooler hydrostatically driven and

thermostatically controlled

Travel drive, controlTransmission system Closed-loop hydrostatic travel drive,

each track is driven independently

Travel speed* Infinitely variable

Speed range 1: 0-4.0 km/h / 0-2.48 mph

Speed range 1: (4.8 km/h / 2.9 mph reverse)


Speed range 1: (7.8 km/h / 4.8 mph reverse)


* Travel speed ranges can be set with the

programmable control (memory function)

Drawbar pull at 365 kN / 82,026 lb

1.5 km/h / 0.9 mph

Electronic control Electronic engine speed sensing control

automatically adjusts travel speed and drawbar

pull to match changing load conditions

Steering Hydrostatic, infinitely variable track speeds

provide unlimited maneuverability and

optimum control for full power turns and

counterrotation

Service brake Wear-free, hydrostatic (dynamic braking)

Automatic park brake Wear-free, wet multiple-disc brakes

Cooling system Separate oi l cooler, hydrostatically driven and

thermostatically controlled

Filter system Micro cartridge filters

Final drive Heavy-duty combination spur gear with

double-reduction planetary final drives, double

sealed with electronic seal-integrity indicator

Control Single-lever steering allows for full power turns

and counterrotation

UndercarriageL LGP

Mount Via separate pivot shafts and an oscillating

equaliser bar

Chains Sealed and lubricated chains, single-bar

grouser moderate service shoes, track chain

tension via grease tensioner and hydraulic

cylinders

Links 40 each side 44 each side

Track rollers/

carrier rollers 7/2 each side 8/2 each side

Sprocket segments 5 each side 5 each side

Track shoes standard 508 mm/20 812 mm/32

Track shoes optional 560 mm/22 914 mm/36

610 mm/24

710 mm/28

Refill capacitiesFuel tank 535 l (117.7 gallons)

Cooling system 62 l (13.6 gallons)

Engine oil with oil filters 43 l (9.5 gallons)

Splitter box 6.4 l (1.4 gallons)

Hydraulic tank 189 l (41.6 gallons)

Final drive, each 19.5 l (4.3 gallons)

Hydraulic systemSystem type Load Sensing proportional pump flow control

Pump type Swash plate variable displacement piston pump

Pump flow max. 260 l/min / 57.2 gpm

Pressure limitation 260 bar / 3,770 PSI

Control valve 2 segments, expandable to 4

Filter system Return filter with magnetic rod in the hydraulic

tank

Control Single joystick lever for all blade functions

Operators cabCab Resiliently mounted cab with positive pressure

ventilation, can be tilted with the hand pump

40 to the rear. With integral ROPS Rollover

Protective Structure (ISO 3471) and FOPS

Falling Objects Protective Structure (ISO 3449)

Operators seat Fully adjustable, suspended swivel seat

adjustable to operator's weight

Monitoring Combination of LCD and analog instrument

panel

Sound-pressure level LpA (inside cab) = 78 dB(A) 2000/14/EC

LwA (surround noise) = 105 dB(A) 2000/14/EEC

kN

300

365

200

100

0

km/h

400

Drawbarpull

Travel speed

0 1 2 3 4 5 6 7 8 9 10 11

0 1 2 3 4 5 6 7 mph

0

20

40

60

80

100

x 1000 Ib

Drawbar pull PR 744

Usable drawbar pull will depend on traction and weight of tractor


3/8

Dimensions PR 744 L PR 744 LGP

A Height over cab mm 3,434 3,

ft-in 113 113

B Overall length without attachments mm 4,657 4,692

ft-in 153 155

C Distance idler/sprocket centre mm 2,992 3,316

ft-in 910 1011

D Height of grousers mm 71.5 71.5

inch 2.81 2.81

E Track gauge mm 1,980 2,180

ft-in 66 72

F Total width without trunnions (standard shoe width) mm 2,488 2,992

ft-in 82 910

G Total width over blade-mounting trunnions mm 3,000 3,600ft-in 910 1110

H Ground clearance mm 546 546

ft-in 19 19

Tractor shipping weight1 kg 20,920 21,740

lb 46,121 47,9281 Includes coolant, lubricants, 20% fuel, ROPS/FOPS cab and track pads standard

PR 744 Litronic 3

Dimensions

C

B

D

A

H

E GF



Front attachment

Semi-U blade and Semi-U blade Straight blade

straight blade L LGP

Blade capacity according to ISO 9246 m3 7.2 6.0

yd3 9.4 7.9

A Height of blade mm 1,545 1,320

ft-in 65 44

B Width of blade mm 3,690 4,520

ft-in 144 1410

C Lifting height mm 1,222 1,179

ft-in 410 310

D Depth below ground mm 511 616

ft-in 21 20

E Max. blade pitch 10 10

Max. blade tilt mm 930 933ft-in 34 31

H Overall length mm 6,050 5,935

ft-in 230 196

Operating weight1 kg 24,605 25,570

lb 54,245 56,372

Ground pressure1 kg/cm2 0.81 0.47

PSI 11.52 6.681 Includes coolant, lubricants, full fuel tank, ROPS/FOPS cab, semi-U blade/straight blade, operator and track pads standard

H

B

A

D

E

C


5/8PR 744 Litronic 5

Front attachment

H

B1

C

ED

H1

G

A

B

F

Mechanical Angle blade

angle blade L

Blade capacity according to ISO 9246 m3 4.90

yd3 6.41

A Height of blade mm 1,200

ft-in 311

B Width of blade mm 4,590

ft-in 151

B1 Transport width mm 4,175

ft-in 138

C Lifting height mm 1,290

ft-in 43

D Depth below ground mm 570

ft-in 110

F Max. blade angle 25

Max. blade tilt mm 735

ft-in 25

G Width over C-frame mm 3,200

ft-in 106

H Overall length, blade straight mm 6,215

ft-in 205

H1 Overall length, blade angled mm 7,105

ft-in 234

Operating weight1 kg 24,805

lb 54,686

Ground pressure1 kg/cm2 0.82

PSI 11.661 Includes coolant, lubricants, full fuel tank, ROPS/FOPS cab, angle blade, operator and track pads standard



Rear attachment

Ripper Parallelogrammulti-shank

A Ripping depth (max./min.) mm 749 (449)

ft-in 25 (16)

B Lifting height (max./min.) mm 755 (457)

ft-in 26 (16)

C Overall length, mm 1,586

attachment raised ft-in 52

D Overall length, mm 1,937

attachment lowered ft-in 64

E Ripper width mm 2,184

ft-in 72

F Distance between teeth mm 1,000ft-in 33

Weight kg 3,295

lb 7,264

Drawbar Rigid

A Additional length mm 435

ft-in 15

B Socket pin diameter mm 50

inch 2

C Height of jaw mm 521

ft-in 19

D Ground clearance mm 425

ft-in 15

Jaw opening mm 95

ft-in 4

Weight kg 345

lb 780

Ripper Parallelogrammulti-shank with hydraulic

pitch adjustment

A Ripping depth (max./min.) mm 749 (449)

ft-in 25 (16)

B Lifting height (max./min.) mm 759 (459)

ft-in 26 (16)

C Overall length, mm 1,569

attachment raised ft-in 52

D Overall length, mm 1,937

attachment lowered ft-in 64

E Toolbar width mm 2,184

ft-in 72

F Distance between teeth mm 1,000ft-in 33

Max. shank pitch 25

Weight kg 3,305

lb 7,286

B

A

C

D

E

F

FE

F

F

B

A

C

D

D C

A

B


7/8PR 744 Litronic 7

Equipment

Basic machine S OTow switch

Towing hitch rear

Towing lug front

Forestry equipment

Landfill equipment

Battery compartment, lockable

Filling with environmental-friendly oil

Filling with oil SAE 30

Filling with oil SAE 10

Tank guard, complete

Refuelling pump, electric

Belly pans, heavy-duty

Cold start device, heating coil

Radiator, wide-meshed

Radiator guard, heavy-duty

Radiator guard, hinged

Liebherr diesel engine

Fan, hydraulically driven temp. control

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

S = Standard, O = Option

Travel drive S OParking brake, automatic

Function control, automatic

Control, single joystick

Load limit control, electronic

Electronic control

Travel control, 3-speed

Hydrostatic travel drive

Inching brake pedal

Emergency stop

Oil cooler

Spure gear with double reduction gear

Safety lever

Undercarriage S OTrack frame, closed

Sprocket segments, bolted

Master link, two-piece

Track shoes with mud hole track pads

Track guide centre part

Tracks oil lubricated

Track guard

Undercarriage, rigid

Track frames, oscillating

Pivot shaft, separate

Sprocket segments with recesses

Electrical S OStarter motor 7.8 kW

Working lights, front, 6 units (halogen)

Working lights, rear, 2 units (halogen)

Batteries, cold start, 2 units (170 Ah)

Battery main switch, mechanical

On-board system 24 V

Alternator 80 A

Back-up alarm

Beacon

Horn

Start lock, electronic

Additional lights, rear

Operators cab S OStorage compartment

Armrest 3D adjustable

Ash tray

Pressurised air filter

Operators seat, 6-way adjustable

Operators seat, air-suspended

Fire extinguisher

Dome light

Coat hook

Air conditioner

FM radio

Radio preinstallation

ROPS/FOPS

Rear mirror, inside

Safety glass, tinted

Windshield, washer system with

intermittent function

Windshield wipers front, rear

Sliding windows, left

Sliding windows, right

Protective grids for windows

Extension, seat back

Sun visor

Socket 12 V

Warm water heating

Instruments indicators S O

Battery charging

Engine-hour meter

Electronic travel control Electronic engine control

Speed range

Cooling water temperature

Cold start Diesel engine

Oil level final drives

Float position blade

Fuel level

Contamination hydraulic filter

Contamination air filter

Engine oil pressure warning lamp

Oil temperature warning lamp

Water contamination fuel system

Hydraulicsystem S O

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 S OMounting plate for external tools

Drawbar rear, rigid

Drawbar rear, swivelling

Counterweight, rear

Ripper, 3 shanks

Straight blade

Semi-U blade

Angle blade

Winch

Spill plate for blade

Subject to changes.

Options and/or special attachments, supplied byvendors other than Liebherr, are only to beinstalled with the knowledge and approval ofLiebherr to retain warranty.


8/8

Printed in Germany by Eberl RG-BK-RP LWT/VM 10290895-0.3-10.05

The Liebherr Group of Companies

Wide product rangeThe Liebherr Group is one of the largest construction

equipment manufacturers in the world. Liebherrs high-

value products and services enjoy a high reputation in

many other fields, too. The wide range includes domes-

tic 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 its technical excel-

lence and acknowledged quality, Liebherr-products offer

a maximum of customer benefits in practical application.

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 techno-

logy for construction equipment.

Worldwide and independentHans Liebherr founded the Liebherr family company in

1949. Since that time, the enterprise has steadily grown to

a Group of 100 companies with over 22,000 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-Strae 35, A-6410 Telfs +43 5262 600-0, Fax +43 5262 600-72www.liebherr.com, E-Mail: [email protected]

liebherr track tensioner tool

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