Liebherr Pr 712 Litronic Final Drives

Technical Description Crawler Tractor

PR 712 B litronic`

Engine output 77 kW / 105 HP Operating weight 11.8 – 13.6 t / 26,000 – 30,000 lb Hydrostatic travel drive with electronic steering control

The Better Machine.

Engine

Travel Control

Liebherr-Diesel Engine ____ Rating per ISO 9249 ________________________ Displacement __________________ Bore/Stroke ____________________ Design ____________________________ Injection

________________________

Fuel filter ________________________ Lubrication

____________________

Operating voltage ____________ Alternator ______________________ Starter ____________________________ Central fuse box ______________ Batterie __________________________

D 924 T-E

1 joystick lever

77 kW (105 HP) at 2000 RPM 6.7 l (409 cu.in.) 122/142 mm (4.8/5.6 in.) 4 cylinder in-line engine, water-cooled, turbocharged direct fuel injection with injection pump, mechanical govenor pre-cleaner with water separator and fine filters pressurized lube system with full flow filter and integrated oil cooler, deep oil pan for inclinations, engine lubrication to an inclination of up to 45h to each side 24 V 55 Amp. 5.4 kW (7 HP) 35 A 110 Ah

Speed range 1 ____________ Speed range 2 ____________ Engine speed sensing control __________ electronic regulation assures constant balance between travel speed and necessary drawbar pull through engine speed sensing avoiding engine overload, even in partial load range Straight line travel ____ electronically controlled Parking/emergency brake ________________________ automatically applied after the joystick lever is put in neutral position Safety lever ______________ inactivates complete travel and working hydraulic circuit and automatically activates parking brake Emergency shut off ____ push button on instrument panel immediately activates parking and emergency brake

__________

Implement Hydraulic

Travel Drive

Hydraulic system

Design ____________________________ independent hydrostatic drive of travel gear Pump flow ______________________ max. 125 l/min (33 gpm) Max. pressure ________________ adjusted to 420 bar (6090 PSI) Travel speed ____________________ 0 – 11 km/h (0 to 6.8 mph) infinitely variable, forward and reverse Steering __________________________ hydrostatic Service brake __________________ hydrostatic Parking/emergency brake ______________________________ automatic multi disc brake in final drives Cooling system ________________ hydraulic oil cooler with separate cooling circuit with gear pump and front mounted cooler Filter system __________________ cartridge fine filters in the cooling circuit ______________________ Final drive 2-stage planetary reduction gear

______

Pump flow ________________ Pressure limitation ____ Control valve ____________ Filter system

____________

Control ______________________

Attachments

150 146

Operator's Compartment Cab

__________________________

100

50

Operator's seat 1

2

3

4

5

6

7

8

9 10 11 12 Travel speed km/h

Track Frame Design ____________________________ maintenance-free long (L) or low ground pressure (M) tractor-type track frames Mount ____________________________ elastic components at a separate pivot shaft and an oscillating equalizer bar, oscillation ± 2,5h Chains ____________________________ sealed or lubricated, track chain tension via grease tensioner and hydraulic cylinders, single grouser pads Chain links ____________________ 44 Sprockets ________________________ 2 replaceable segments Track rollers __________________ 7 Carrier rollers ________________ 2

__________

Instrument panel Ventilation

______

________________

resiliently mounted, with integrated ROPS (Roll Over Protective Structure, SAE J 1040/ISO 3471) and FOPS (Falling Objects Protective Structure, SAE J 231/ISO 3449), can be tilted with handpump to 40h to the rear for accessibility to machine components, diagonally arranged doors, all around safety glass fully adjustable, suspended swing seat, adjustable to operator weight comprehensive instrument panel on the right side of the operator's seat pressurized filtered air ventilation, 3 stage blower, 8 air nozzles, sliding windows on both sides and in the rear hot water heater

Heater ______________________ Sound level at operator’s ear ________ 82 dB(A) on job location, conforms to EG standard 86/662/EWG

Refill Capacities Fuel tank ________________________________________________________________ 310 Cooling system __________________________________________________________ 52 Engine oil__________________________________________________________________ 18 Splitterbox ________________________________________________________________ 2.5 Hydraulic tank ________________________________________________________ 178 Final drive, each ______________________________________________________ 5.5

Technical Description 2

load sensing proportional pump flow control, variable flow swash plate piston pump and pressure compensation max. 112 l/min (30 gpm) max. 160 bar (2300 PSI) 2 spool control block, can be expanded to 5 circuits return filter with magnetic rod in hydraulic tank single servo-assisted joystick lever for blade hoist and tilt functions, electrically controlled blade float and quick drop

Front side__________________ straight blade or 6-way-blade Rear side __________________ ripper, hydraulic winch or swinging drawbar Pivot points ______________ maintenance-free, with hardened and polished pins and bushings

Drawbar pull kN 200

0 0

with electronic control for all travel functions: travel direction, speed, steering and counter-rotation 0 – 5 km/h (0 to 3.1 mph) 0 – 11 km/h (0 to 6.9 mph)

l l l l l l

(81.8 (13.7 ( 4.8 ( 0.7 ( 47 ( 1.4

gal) gal) gal) gal) gal) gal)

Basic Machine

A

B

G

E

F

D C

A B C D E F G H

Height over cab Height over engine cover Overall length without attachments Distance idler/sprocket center Height of grouser Track gauge Ground clearance Width over frame mounting trunions Overall width with pad size 18”/457 mm 22”/560 mm 24”/610 mm 28”/711 mm 30”/762 mm 34”/864 mm

H

PR 712 B-L

PR 712 B-M

ft-in/mm

ft-in/mm

10’2”/3100 6’11”/2100 12’1”/3675 8’7”/2615 2”/56 5’9”/1750 1’3”/370 9’0”/2748

10’2”/3100 6’11”/2100 12’1”/3675 8’7”/2615 2”/56 6’4”/1930 1’3”/370 10’1”/3078

3,705 4,542 4,945 5,766

sq.in/2.39 sq.in/2.93 sq.in/3.19 sq.in/3.72 – –

m2 m2 m2 m2

4,945 5,766 6,185 7,006

– – sq.in/3.19 sq.in/3.72 sq.in/3.99 sq.in/4.52

m2 m2 m2 m2

Dimensions 3

Straight Blade

H

A

T

K U

P

B

N

Blade capacity

Dimensions A B H K T P U N

Blade height Blade width Blade lifting height Blade drop below ground Max. blade tilt Max. blade pitch Overall length Track pad width

Operating Weights Basic machine with blade and track pad width of 18"/457 22"/560 24"/610 28"/711 30"/762 34"/864

mm mm mm mm mm mm

Ground Pressure Basic machine with blade and track pad width of 18"/457 22"/560 24"/610 28"/711 30"/762 34"/864

mm mm mm mm mm mm

Attachments 4

PR 712 B-L

PR 712 B-M (LGP)

2.80 cu.yd/2.14 m3

2.81 cu.yd/2.15 m3

ft-in/mm

ft-in/mm

3’1"/950 9’10"/3000 2’11"/900 1’6"/445 1’9"/545 10h 15’4"/4665 18"/22"/24"/28" 457/560/610/711

2’11"/900 11’0"/3350 3’0"/905 1’6"/445 1’9"/540 10h 15’3"/4645 30"/34" 762/864

lb/kg

lb/kg

26,019/11800 26,460/12000 26,681/12100 27,122/12300 – –

– – – – 27,783/12600 28,224/12800

PSI/kg/cm2

PSI/kg/cm2

6.97/0.49 5.83/0.41 5.40/0.38 4.69/0.33 – –

– – – – 4.55/0.32 3.98/0.28

6-Way-Blade With Inside Mounted U-frame

H

A

T

K P

U

B

B1

N

Y

U1

Blade capacity

Dimensions A B B1 H K T P Y U U1 N

Blade height Blade width Transport width Blade lifting height Blade drop below ground Max. blade tilt Max. blade pitch Blade angle Overall length (blade straight) Overall length (blade angled) Track pad width

Operating Weights Basic machine with blade and track pad width of 18"/457 22"/560 24"/610 28"/711 30"/762

mm mm mm mm mm

Ground Pressures Basic machine with blade and track pad width of 18"/457 22"/560 24"/610 28"/711 30"/762

mm mm mm mm mm

PR 712 B-L

PR 712 B-M

3.17 cu.yd/2.42 m3

3.18 cu.yd/2.43 m3

ft-in/mm

ft-in/mm

3'5"/1050 9'8"/2950 9'0"/2750 3'7"/1085 1'6"/445 1'5"/440 5h 23h 15'10"/4835 17'6"/5335 18"/22"/457/560

3'3"/1000 10'7"/3235 9'10"/3000 3'7"/1085 1'6"/445 1'7"/485 5h 23h 15'10"/4835 17'7"/5370 24"/28"/30"/610/711/762

lb/kg

lb/kg

26,129/11850 26,570/12050 – – –

– – 27,011/12250 27,232/12350 27,673/12550

PSI/kg/cm2

PSI/kg/cm2

7.11/0.50 5.97/0.42 – – –

– – 5.4/0.38 4.69/0.33 4.41/0.31

5

6-Way-Blade With Outside Mounted C-frame

H

A

T

K P

U

B

B1

G R

N

Y

We recommend using the 6-wayblade only in conjunction with rear mounted attachment or counterweight.

U1

PR 712 B-L Blade capacity

Dimensions A B B1 H K P Y T G R U U1 N

Height of blade Width of blade Transport width Blade lifting height Blade drop below ground Max. blade pitch Blade angled Max. blade tilt Width over frame mounting trunions Width over C-frame Overall length (blade straight) Overall length (blade angled) Track pad width

Operating Weights

ft-in/mm 3'3"/1000 10'7"/3235 9'10"/3000 3'11"/1200 1'4"/410 5h 23h 1'7"/485 8'7"/2618 8'7"/2620 16'6"/5040 18'3"/5575 18"/22"/457/560

lb/kg

Basic machine with blade, counterweight and track pads 18"/457 mm 22"/560 mm

29,216/13250 29,657/13450

Ground Pressures

PSI/kg/cm2

Basic machine with blade, counterweight and track pads 18"/457 mm 22"/560 mm

7.82/0.55 6.54/0.46

Attachments 6

3.18 cu.yd/2.43 m3

Ripper

Winch

H

D

I

C

B

X

A

A

G J

C

B

E

D H F G

E

H F

3-shank rigid type

Dimensions A B C D E F G H X

Ripping depth Lifting height Overall length attachment raised Ground clearance below toolbar Overall length attachment lowered Ripping width Toolbar width Distance between teeth Slope angle

Weight Ripper complete

Max. line pull: 50,900 lb/227 kN (23,1 t) Max. line speed: 0 – 105 m/min. (0 – 344 ft/min.) Cable size: 3/4"/19 mm Cable length: 230 ft/70 m

ft-in/mm 1'4"/ 400 1'8"/ 515 3'0"/ 925 6"/ 148 3'11"/1185 6'11"/1860 6'7"/2000 2'11"/ 900 31h

lb/kg 1,874/850

Dimensions

ft-in/mm

A B C D E F G H I J

3'9"/1135 2'1"/ 635 1'9"/ 525 8"/ 210 9"/ 230 1'6"/ 460 1'4"/ 405 3'4"/1020 4'5"/1350 1'5"/ 440

Height, cable exit Overall length Height drawbar Drum diameter Coiling width Flange diameter Distance to center of drum Height to drum center Total height Hook radius of winch

Weight Winch complete

lb/kg 2,646/1200

7

Basic machine

Operator’s cab Standard

x NEW!

x x x x x x x x x x x x x x x

NEW!

x x x x x

x x x x

x x x x x x x x x x x x x x x x x x x x x

x x x x x x x

x x x x x x x

NEW! x x x x x

Instruments – Indicators Battery charging Hour meter Electronic control Speed range Engine oil pressure Water temperature Oil pressure cooling circuit Oil level final drives Float position blade Fuel level Contamination hydraulic filter Contamination air filter Cold start Diesel engine

Hydraulic control 6-way-blade Hydraulic control ripper Hydraulic control winch Variable flow pump, load sensing Oil filter with strainer in hydraulic tank Blade quick drop Blade float position Control block for 2 circuits Hydraulic tank oil level control Hydraulic servo control

x x x x x x x x x x x x x x

x x x x x x x x x x x x x x

x x x x x x x x x x x x x

Implement hydraulic x x x x x x x x x x

Attachments Mounting plate rear for external tools Drawbar rear hinged Drawbar rear rigid Counterweight rear Ripper single shank Ripper 3 shank Ripper 5 shank Bumper rear Rake for landclearing 6-way-blade inside mounted 6-way-blade outside mounted 6-way-blade with hinged corners Blade – straight blade Blade – semi-U-blade Blade – trimming blade Blade – U-blade Blade – angle blade Blade – woodchip-U-blade Blade – coal-U-blade Blade – landfill blade Push plate Winch Rock guard for semi-U-blade Spill plate Wear plates for push arms Wear plates for blades

LIEBHERR-WERK TELFS GMBH, Hans-Liebherr-Straße 35, A-6410 Telfs, ç (0 52 62) 6 00, Fax (0 52 62) 6 00 72 www.liebherr.com, e-Mail: [email protected] With compliments:

x x

x x

Electrical system Starter motor 5.4 kW Starter motor 6.6 kW Starter motor 9 kW Working lights rear 2 units Working lights front 2 units Battery main switch electric Batteries, heavy duty cold start On-board system 24 V Alternator 55 A Alternator 80 A Back-up alarm Beacon Horn Start lock electronic Lights additional rear 2 units Ligths additional on lift cylinders Lights additional on engine hood

Option

x

Undercarriage Resilient mounting Track shoes extreme service (ESS) Track frame closed Sprocket segments bolt-on Master link 2 piece Track shoes with relief holes Tracks oil lubricated Track guide center part Track guard Undercarriage extented Undercarriage low ground pressure Undercarriage standard Undercarriage extra wide tracks Track frames oscillating +/- 3h Pivot shaft separate Sprocket segments with recesses

Standard x

x

Travel drive Parking brake automatic Function control automatic Control – single lever Load limit control electronic Travel control electronic Travel control 2-speed Travel control 3-speed Hydrostatic travel drive Emergency stop Oil cooler Final drives planetary gear Safety lever

Stowing box Armrest adjustable Ash tray Rear mirror outside left Pressurizer with air filter Operator’s seat 6-way adjustable Operator’s seat air suspended Fire extinguisher Dome light Coat hook Air conditioner FM radio Radio installation kit ROPS/FOPS-cab sound supressed ROPS-canopy Rear mirror inside Windscreen washer Windscreen wipers front, rear, doors Sliding windows Protective grids for windows Safety glass tinted Sun blinds Extra cab heater Cabin heater warm water

x x x x x x x x x x x

x x x x x x

LWT/VM 8434215-1.5-01.02 Printed in Germany by Wolf. Illustrations and data may differ from standard equipment. Subject to change without notice.

Cover engine hood Cover oil cooler Exhaust catalyst Tow switch Towing hitch rear Towing lug front Forestry equipment Woodchip handling equipment Coal handling equipment Landfill equipment Battery compartment lockable Filling with environmental friendly oil Filling with oil SAE 10 Filling with oil SAE 30 Tank guard complete Tank guard bottom Refuelling pump electrical Belly pans heavy duty Fire supression system engine compartment Connector external electric power Cold start device ether Cold start device glow plug Radiator coarse mesh Radiator guard 2-piece, hinged Liebherr Diesel engine Fan – hydraulically driven Fan guard Engine oil cooler Engine doors perforated Engine doors hinged, lockable Lugs for crane lifting Platform rear Special paint Settling pund equipment Fuel water separator Fuel water separator with electric heater Air filter dry-type, dual step Wear guard for radiator Precleaner with automatic dust ejector Preheater for engine electric Tool kit in batteries compartment

Option