Performance
Power and innovative technology are features of Liebherr’s generation 4 crawler tractors. Their excellent power-to-weight ratio stands for maximum productivity in all operating conditions. Whether ripping hard ground, moving material or grading surfaces, the outstanding performance of the PR 744, PR 754 and PR 764 never fails to impress.
Engine Output: 250 KW / 340 HP
Operating Weight: 34,990 – 42,415 kg – 77,140 – 93,509 lb
Blade Capacity: 4.97 – 11.70m3 – 6.5 – 15.3 yd3
Reliability
Sturdy and strong: Liebherr crawler tractors and the materials used to build them are designed for long, trouble-free life. Components subject to severe loads are made from high-strength materials, and points exposed to possible damage are well protected. Liebherr crawler tractors owe their high levels of availability to these stringent reliability standards.
PR 754
Litronic
Engine
Liebherr Diesel engine: D 946 L A6
Emission regulations: 97/68/EC, 2004/26/EC Stage IIIA and EPA/CARB Tier 3
Rated power (net): ISO 9249 250 kW / 340 HP, SAE J1349 250 kW / 336 HP
Maximum power (net): ISO 9249 275 kW / 374 HP, SAE J1349 275 kW / 369 HP
Rated speed: 1,600 rpm
Displacement: 12 l / 733 in3
Design : 6 cylinder in-line-engine (wet-sleeve),
Injection system: Direct fuel injection, pump-line-nozzle system, electronic control
Hydraulics
Hydraulic system: Load sensing (demand-controlled)
Pump type: Swash plate piston pump
Pump flow, max.: 261 l/min / 57.4 gpm
Pressure limitation : 260 bar / 3,770 PSI
Control valve: 2 segments, expandable to 4
Undercarriage
Mounting Via separate pivot shafts and equalizer bar, Track chains Lubricated, single grouser shoes, tensioning via steel spring and grease tensioner
Travel drive, control
Transmission system : Infinitely variable hydrostatic travel drive, independent drive for each track
Travel speed continuously variable:
Speed range 1 (reverse): 0 – 4.0 km/h / 2.5 mph (4.8 km/h / 2.9 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)
Operator’s cab
Cab resiliently mounted cab with positive pressure ventilation, can be tilted with hand pump 40° to the rear. With integrated ROPS Rollover Protective Structure (EN ISO 3471) and FOPS Falling Objects Protective Structure (EN ISO 3449)
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