Liebherr PR 724 Litronic User Manual download pdf (Page 12)

12 PR 724 Litronic

Basic machine

Engine

Liebherr diesel engine D 934 L A6

Emission regulations according to 97/68/EC,

2004/26/EC Stage IIIA and EPA/CARB Tier 3

Rating (SAE J1349) 120 kW / 161 HP

Rating (ISO 9249) 120 kW / 163 HP

Rated speed 1,800 rpm

Displacement 7.0 l / 427 in³

Design 4-cylinder in-line engine, water-cooled,

turbocharged, air-to-air intercooler

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

electronic control

Engine lubrication Pressurized lube system, engine lubrication

guaranteed for inclinations up to 45-degree

Operating voltage 24 V

Alternator 80 A

Starter 5.4 kW

Batteries 2 x 170 Ah / 12 V

Air cleaner Dry-type air cleaner with pre-cleaner, main and

safety elements, control light in the operator’s

cab

Cooling system Combi radiator, for water, hydraulic fluid, fuel,

charge air. Hydrostatic fan drive

Travel drive, control

Transmission system Variable hydrostatic travel drive, independent

drive for each track frame

Travel speed * Continuously variable

Speed range 1 (reverse) 0–4.0 km/h / 2.5 mph (4.8 km/h / 3.0 mph)

Speed range 2 (reverse) 0–6.5 km/h / 4.0 mph (7.8 km/h / 4.8 mph)

Speed range 3 (reverse) 0–11.0 km/h / 6.8 mph (11.0 km/h / 6.8 mph)

* Travel speed ranges can be set on the travel

joystick (memory function)

Drawbar pull 235 kN at 1.5 km/h / 52,839 lbf at 0.9 mph

Litronic-System Electronic engine speed sensing control

(load-sensing feature) automatically adjusts

travel speed and drawbar pull to match

changing load conditions

Steering Hydrostatic

Service brake Hydrostatic (self locking), wear-free

Parking brake/ Multi-disc brake, wear-free, automatically

emergency brake applied with neutral joystick position

Cooling system Hydraulic oil cooler, integrated in combi radiator

Filter system Micro cartridge filters in cooling circuit

Final drive Combination spur gear with planetary gear,

double sealed (duo cone seals) with electronic

seal-integrity indicator

Control Single joystick for all travel and steering

functions and counter rotation

Track frame

L XL LGP

Mount Via separate pivot shafts and an oscillating

equalizer bar

Chains Lubricated, single grouser pads, tension via

steel spring and grease tensioner

Links 42 46 46

Track rollers/carrier rollers 7/2 8/2 8/2

Sprocket segments 5 5 5

Track pads width 508 mm (20”) 508 mm (20”) 711 mm (28”)

standard 812 mm (32”)

Track pads width 560 mm (22”) 560 mm (22”) 914 mm (36”)

option 610 mm (24”) 610 mm (24”)

Operator’s cab

Cab Resiliently mounted cab with enclosed positive

pressure ventilation, can be tilted with the hand

pump 40° to the rear. With integrated ROPS

Rollover Protective Structure (EN ISO 3471)

and FOPS Falling Objects Protective Structure

(EN ISO 3449)

Operator’s seat Fully adjustable comfort seat adjustable to

operator’s weight

Monitoring Combined analog / LC display, automatic

monitoring of abnormal operating conditions

Drawbar pull PR 724

Noise emissions

Operator sound exposure L

= 77 dB(A)

ISO 6396 (emission at the operator’s position)

Exterior sound pressure

= 109 dB(A)

2000/14/EC (emission in the environment)

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Liebherr PR 724 Litronic User Manual Page 12

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