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: 310 KW / 422 HP

Operating Weight: 45,220 – 53,590 kg – 99,693 – 118,146 lb

Blade Capacity: 13.6 – 17.0m3 – 17.8 – 22.2 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 764

Litronic

Engine

Liebherr Diesel engine D 9508 A7

Emission regulations: 97/68/EC, 2004/26/EC Stage IIIA and EPA/CARB Tier 3

Rated power (net): ISO 9249 310 kW / 422 HP,  SAE J1349 310 kW / 416 HP

Maximum power (net) : ISO 9249 357 kW / 486 HP,  SAE J1349 357 kW / 479 HP

Rated speed : 1,600 rpm

Displacement : 16.2 l / 989 in3

Design: 8 cylinder V-engine (wet-sleeve) water-cooled, turbocharged, air-to-air intercooler

Injection system: Direct fuel injection, common Rail system, electronic control


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)


Hydraulics

Hydraulic system: Load sensing (demand-controlled)

Pump type: Swash plate piston pump

Pump flow, max.: 352 l/min / 77.9 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-bar grouser shoes, tensioning via steel spring and grease tensioner


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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