PR 764 Liebherr PR 764 Specifications & Technical Data (2006—2014)

Low maintenance costs

All the diesel engine’s servicing points are grouped together centrally, and can be easily reached. The hydraulic tilt cab makes it even easier to reach the various mechanical assemblies for quick, effective servicing. Maintenance intervals are optimally matched to the various components and assemblies. Where parts are exposed to dirt and dust, for instance on the pushing frame, maintenance-free bearings are used.

Outstanding cab design

The well-planned cab layout makes conditions ideal for stress-free, efficient operation of the machine. All instruments and controls are clearly laid out and within easy reach.

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 754 and PR 764 never fails to impress. Liebherr has successfully been building crawler tractors with hydrostatic transmission for the past thirty years. The generation 4 models exemplify power, efficiency and capability in a wide range of applications.

Economy

Liebherr’s economic advantages are undisputed: like all Liebherr machines, the PR 754 and PR 764 save money by being easy to service, with shorter down times and lower maintenance costs. The latest generation of Liebherr diesel engines combines performance with economy, and with the machines’ efficient drive-train, impressive power is available at minimum fuel consumption. Liebherr crawler tractors are designed with economy in mind, featuring low fuel consumption, high productivity, extended component life and minimum maintenance costs.

Low fuel consumption

The Liebherr diesel engine always operates at a constant speed – in the most economical rpm range – regardless of the actual travel speed. A low mean piston speed boosts cylinder filling and leads to more efficient combustion of the fuel-air mixture. Hydrostatic transmission delivers the best possible level of efficiency over the full speed range. Even when peak power at low ground speed is required - e.g. when ripping - the oil temperature remains low. This system keeps energy consumption down to the level needed by the hydraulics at any given moment. It saves fuel when the work tools are not being operated.

Liebherr powertrain

Liebherr diesel engines have been developed for the toughest imaginable operating conditions. A rigid ladder-type frame reduces engine vibration and provides the strength needed for maximum operating reliability and long service life. A tried and tested system: Liebherr’s hydrostatic travel drive needs no torque converter, manual-shift gearbox, differential steering or steering clutches. The system’s hydraulic pumps and motors are standardized, effectively wear-free in operation and exceptionally reliable. Of ample dimensions, Generation 4 final drives are designed to withstand the most severe loads. Double transmission seals with automatic leak detection enhance reliability even more.

Safety in every situation

Even on steep gradients, the crawler tractor is always positively driven. Since the system cannot freewheel (hydrostatic transmission), the operator controls braking simply by moving back the travel joystick. When the machine comes to a halt, the parking brake is applied automatically for additional safety.

Comfort

The operator of a generation 4 Liebherr crawler tractor works in a cab of generous size, with controls laid out according to the latest ergonomic principles. This well-designed cab provides an ideal view of the work area and the working equipment. Intuitive single joystick control makes for sensitive and accurate dozer operation. The operator’s work area has been redesigned for an exceptionally high level of comfort and convenience. There is ample space, the controls are laid out ergonomically and the noise level is low. Liebherr cabs provide perfect conditions for concentrated work without fatigue. The excellent view makes safe, accurate operation much easier.

Well-planned details

A large storage compartment is standard, and includes a 12 Volt power. The seat with its wide range of adjustments and three-position armrests helps to provide a pleasant work area for the operator. Many other details, for example a sliding side window, tinted glass and a footrest, add to the operator’s comfort.

Excellent view of rear-mounted attachments

ROPS/FOPS protection is integrated into the cab, with large window area. Excellent view of ripper and surrounding work area. Direct view of ripper adjusting pin.