Liebherr PR 724 Litronic - Manual (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
pA
= 77 dB(A)
ISO 6396 (emission at the operator’s position)
Exterior sound pressure L
wA
= 109 dB(A)
2000/14/EC (emission in the environment)
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