Liebherr Track Tensioner Tool

Technical Description Crawler Tractor

PR litronic 744

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

`

Basic machine Engine

Rating (ISO 9249) Rating (SAE J1349) Rated speed Displacement Design Injection system Lubrication Operating voltage Alternator Starter Batteries Air cleaner

Cooling system

Operator’s cab D 936-L A6 Emission regulations according to 2004/26/EEC Stage IIIa, EPA/CARB Tier 3 184 kW / 250 hp 184 kW / 247 hp 1,600 1/min 10.5 l / 641 in3 6 cylinder in-line engine (wet-sleeve), water-cooled, turbocharged, intercooled Direct fuel injection, pump-line-nozzle system Pressurized lube system, deep oil pan for inclination up to 45-degree 24 V DC / 80 A 7.8 kW / 11 hp 2 x 170 Ah / 12V Dry-type air cleaner with safety element, aspirated pre-cleaner with automatic dust ejector and dash-mounted restriction indicator Water cooler hydrostatically driven and thermostatically controlled

Travel drive, control Transmission system Travel speed*

Drawbar pull at 1.5 km/h / 0.9 mph Electronic control

Steering

Service brake Automatic park brake Cooling system Filter system Final drive

Control

Closed-loop hydrostatic travel drive, each track is driven independently 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 2: 0-6.5 km/h / 0-4.0 mph Speed range 1: (7.8 km/h / 4.8 mph reverse) Speed range 3: 0-11.0 km/h / 0-6.8 mph * Travel speed ranges can be set with the programmable control (memory function) 365 kN / 82,026 lb Electronic engine speed sensing control automatically adjusts travel speed and drawbar pull to match changing load conditions Hydrostatic, infinitely variable track speeds provide unlimited maneuverability and optimum control for full power turns and counterrotation Wear-free, hydrostatic (dynamic braking) Wear-free, wet multiple-disc brakes Separate oil cooler, hydrostatically driven and thermostatically controlled Micro cartridge filters Heavy-duty combination spur gear with double-reduction planetary final drives, double sealed with electronic seal-integrity indicator Single-lever steering allows for full power turns and counterrotation

2

PR 744 Litronic

535 l (117.7 gallons) 62 l (13.6 gallons) 43 l (9.5 gallons) 6.4 l (1.4 gallons) 189 l (41.6 gallons) 19.5 l (4.3 gallons)

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) Fully adjustable, suspended swivel seat adjustable to operator's weight Combination of LCD and analog instrument panel LpA (inside cab) = 78 dB(A) 2000/14/EC LwA (surround noise) = 105 dB(A) 2000/14/EEC

Operator’s seat Monitoring Sound-pressure level

Undercarriage L LGP Via separate pivot shafts and an oscillating equaliser bar Sealed and lubricated chains, single-bar grouser moderate service shoes, track chain tension via grease tensioner and hydraulic cylinders 40 each side 44 each side

Mount Chains

Links Track rollers/ carrier rollers Sprocket segments Track shoes standard Track shoes optional

7/2 each side 5 each side 508 mm/20” 560 mm/22” 610 mm/24” 710 mm/28”

8/2 each side 5 each side 812 mm/32” 914 mm/36”

Hydraulic system System type Pump type Pump flow max. Pressure limitation Control valve Filter system

Load Sensing proportional pump flow control Swash plate variable displacement piston pump 260 l/min / 57.2 gpm 260 bar / 3,770 PSI 2 segments, expandable to 4 Return filter with magnetic rod in the hydraulic tank Single joystick lever for all blade functions

Control

Drawbar pull PR 744 kN

x 1000 Ib 100

400 365

80

300 60 200 40 100

Refill capacities Fuel tank Cooling system Engine oil with oil filters Splitter box Hydraulic tank Final drive, each

Cab

Drawbar pull

Liebherr diesel engine

0

20 0 0 0

1 1

2 2

3

3 4

5

4 6

5 7

8

6 9

10

7 mph 11 km/h

Travel speed

Usable drawbar pull will depend on traction and weight of tractor

Dimensions

A

E F G

H

D C B

Dimensions

A Height over cab B Overall length without attachments C Distance idler/sprocket centre D Height of grousers E Track gauge F Total width without trunnions (standard shoe width) G Total width over blade-mounting trunnions H Ground clearance Tractor shipping weight1 1

mm ft-in mm ft-in mm ft-in mm inch mm ft-in mm ft-in mm ft-in mm ft-in kg lb

PR 744 L

PR 744 LGP

3,434 11’3” 4,657 15’3” 2,992 9’10” 71.5 2.81” 1,980 6’6” 2,488 8’2” 3,000 9’10” 546 1’9” 20,920 46,121

3,434 11’3” 4,692 15’5” 3,316 10’11” 71.5 2.81” 2,180 7’2” 2,992 9’10” 3,600 11’10” 546 1’9” 21,740 47,928

Includes coolant, lubricants, 20% fuel, ROPS/FOPS cab and track pads standard

PR 744 Litronic

3

Front attachment

B

A C

E

H

D

Semi-U blade and straight blade Blade capacity according to ISO 9246 A Height of blade B Width of blade C Lifting height D Depth below ground E Max. blade pitch Max. blade tilt

m3 yd3 mm ft-in mm ft-in mm ft-in mm ft-in

Semi-U blade

Straight blade

L

LGP

7.2 9.4 1,545 6’5” 3,690 14’4” 1,222 4’10” 511 2’1” 10°

6.0 7.9 1,320 4’4” 4,520 14’10” 1,179 3’10” 616 2’0” 10°

mm 930 ft-in 3’4” H Overall length mm 6,050 ft-in 23’0” kg 24,605 Operating weight1 lb 54,245 kg/cm2 0.81 Ground pressure1 PSI 11.52 1 Includes coolant, lubricants, full fuel tank, ROPS/FOPS cab, semi-U blade/straight blade, operator and track pads standard

4

PR 744 Litronic

933 3’1” 5,935 19’6” 25,570 56,372 0.47 6.68

Front attachment

B1 B

C

G

A

F D

E H

H1

Mechanical angle blade Blade capacity according to ISO 9246 A Height of blade B Width of blade B1 Transport width C Lifting height D Depth below ground

m3 yd3 mm ft-in mm ft-in mm ft-in mm ft-in mm ft-in

F Max. blade angle Max. blade tilt

mm ft-in G Width over C-frame mm ft-in H Overall length, blade straight mm ft-in H1 Overall length, blade angled mm ft-in kg Operating weight1 lb kg/cm2 Ground pressure1 PSI 1 Includes coolant, lubricants, full fuel tank, ROPS/FOPS cab, angle blade, operator and track pads standard

Angle blade L

4.90 6.41 1,200 3’11” 4,590 15’1” 4,175 13’8” 1,290 4’3” 570 1’10” 25° 735 2’5” 3,200 10’6” 6,215 20’5” 7,105 23’4” 24,805 54,686 0.82 11.66

PR 744 Litronic

5

Rear attachment

F

F

E

E F

F

B

B

A

A C

C

D

D

Ripper multi-shank

Ripper multi-shank

Parallelogram

Parallelogram with hydraulic pitch adjustment

A Ripping depth (max./min.) B Lifting height

(max./min.)

C Overall length, attachment raised D Overall length, attachment lowered E Ripper width F Distance between teeth Weight

mm ft-in mm ft-in mm ft-in mm ft-in mm ft-in mm ft-in kg lb

749 (449) 2’5” (1’6”) 755 (457) 2’6” (1’6”) 1,586 5’2” 1,937 6’4” 2,184 7’2” 1,000 3’3” 3,295 7,264

A Ripping depth (max./min.) B Lifting height

(max./min.)

C Overall length, attachment raised D Overall length, attachment lowered E Toolbar width F Distance between teeth Max. shank pitch Weight

A Additional length B Socket pin diameter C Height of jaw

B

D Ground clearance D C A

6

PR 744 Litronic

mm ft-in mm ft-in mm ft-in mm ft-in mm ft-in mm ft-in

Jaw opening Weight

749 (449) 2’5” (1’6”) 759 (459) 2’6” (1’6”) 1,569 5’2” 1,937 6’4” 2,184 7’2” 1,000 3’3” 25°

kg lb

3,305 7,286

Drawbar

Rigid

mm ft-in mm inch mm ft-in mm ft-in mm ft-in kg lb

435 1’5” 50 2’’ 521 1’9” 425 1’5” 95 4” 345 780

Equipment Basic machine Tow 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

O

• • • • • • • • • • • • • • • • • • • • • • •

Undercarriage Track 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

• • • •

Starter 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

Travel drive

S = Standard, O = Option Subject to changes.

O

• • • • • • • •

S

O

• • • • • • • • • • • •

S

• • • • • • • • • • • •

O

Storage compartment Armrest 3D adjustable Ash tray Pressurised air filter Operator’s seat, 6-way adjustable Operator’s 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

S

Instruments – indicators 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

Hydraulic system

• •

Operator’s cab

Parking 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

S

• • •

O

• • • • •

• • • • • • • •

Mounting 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

O

• • • • • • • • • • • • • • •

S

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

O

• • • • • • • • •

S

O

• • • • • • • • • •

• • • • • • • • •

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 744 Litronic

7

The Liebherr Group of Companies Wide product range

State-of-the-art technology

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.

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.

Exceptional customer benefit

Worldwide and independent

Every product line provides a complete range of models in many different versions. With both its technical excellence and acknowledged quality, Liebherr-products offer a maximum of customer benefits in practical application.

Hans 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

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

Liebherr-Werk Telfs GmbH Hans Liebherr-Straße 35, A-6410 Telfs  +43 5262 6 00-0, Fax +43 5262 6 00-72 www.liebherr.com, E-Mail: [email protected]