Liebherr has started to release its generation 8 crawler tractors with the worldwide introduction of the new PR 736 G8 at bauma.
The new PR 736 G8 is powered by a new 217 hp Liebherr diesel engine that’s part of the company’s EVO series.
The 25,500-kg machine meets Level V emission standards, via a combination of a DOC (diesel oxidation catalyst) and a SCR filter (selective catalytic reduction).
To cover a large application range, various blade versions are available — including straight, semi-U and six-point blade — with capacities from 4.1 to 5.56 cubic metres, alongside several rear equipment options.
The new six-point blade with increased capacity improves production output and facilitates grading with its optimized linkage geometry.
New crawler tractor cab
The operator’s cab offers several new features to improve ergonomics and productivity. For the first time, a grab handle with integrated joystick for the rear ripper is used in the 25 tonne crawler tractor class. According to Liebherr, this guarantees a stable seating when driving in uneven terrain.
As well, Liebherr has fully separated the cab from the base machine. Alongside the noise-optimized drivetrain, operators will experience a significant reduction in vibration and further improvement in noise levels.
Standard climate control keeps a constant cab temperature even in adverse weather conditions. The new access and descent lighting with delay function, which can be activated from outside, provides additional safety at dusk.
The large 23 cm display is the new information and control station for all relevant operating data. Via the display, operators may precisely adjust the driving and steering response to their personal requirements.
Operator Assistance Systems
The new assistance systems on the generation 8 crawler tractors offer three assistance levels, including: Free Grade, for active blade stabilization during fine grading; Definition Grade, for automatic blade positioning when creating 2D grades; and 3D Grade, an optional GPS machine control system to model complex terrain shapes – among others, with the standard roof-mounted GPS/GNSS antennae.
Furthermore, Liebherr Active Sensor Control, which stabilizes all blade axes, is standard. Also, two independent, permanently mounted integrated sensor circuits (gyroscopic and inertia) allow for high grading speeds and perfect fine grading at all times.
Pilot controlled hydraulics
The electronic pilot controlled hydraulics allow for swift work cycles at high precision. It can be optimally adjusted to the operating conditions and the operator’s requirements.
Apart from the hydrostatic drive system, the performance adjustment system and Eco mode were both taken over from the generation 6 crawler tractors. As well as high pushing performance, this allows for particularly economical operation. The new 6-point blade with increased capacity improves production output and facilitates grading with its optimized linkage geometry.
LiDAT is standard
Wide hatches, central maintenance points and a tilting cabin are standard, and facilitate daily maintenance and access for inspection purposes. Long service intervals using Liebherr lubricants significantly contribute to the crawler tractor’s low operating costs.
The standard LiDAT fleet management system delivers information on localization as well as the crawler tractor’s operation. This includes the machine’s position, operating and usage duration, fuel consumption and service interval information.