For 4x2 DAF CF and XF tractors that sometimes have to drive in off-road conditions, DAF is introducing the ‘PXP’: a hydraulic front-wheel drive that can be activated at the flip of a switch.
Robustand maintenance-friendly system can be maintained by any DAF dealer
For trucks that clock up most of their mileage on the road but are sometimes required to drive off-road or in slippery conditions, DAF is introducing hydraulic front-wheel drive that can be activated at the flip of a switch. This new ‘PXP’ drive has been developed together with Paul Nutzfahrzeuge and will be available on the DAF CF and XF 4x2 tractors powered by the PACCAR MX-11 or MX-13 engine. Other chassis types will follow later in the year.
Permanent all-wheel drive for a truck that drives off-road only occasionally, usually means a considerable cost in terms of acquisition, maintenance and fuel consumption. However, it is sometimes very important to have extra traction to tackle ditches,sandy roads, unpaved tip sites and steep inclines.
For challenging situations like these, DAF is now introducing a hydraulic front-wheel drive option for the CF and XF 4x2 tractors that can be activated via a switch on the dashboard. If the vehicle registers slip from the powered wheels, PXP – ‘Paul Xtra Power’ – is automatically activated. The greater the amount of slip from the rear, the more traction the front wheels provide.
Available up to 4th gear
DAF’s switchable front-wheel drive is available in the first four forward gears and the first and second reverse gears. At speeds above 20 kilometres per hour (and/or in 5th gear and upwards) PXP switches back to stand-by mode. The system activates itself again at lower speeds and whenever use is required.
No concessions in terms of optimal usability
To make the switchable front-wheel drive possible, each front axle wheel hub is equipped with a hydraulic motor, producing torque of no less than 6,435 Nm at a maximum system pressure of 360 bar. This ensures optimal performance and optimal longevity and reliability. A unique feature is that the motors are driven by a hydraulic pump that is fitted directly onto the Engine-PTO, which saves both weight and space. In addition, the hydro pump can also drive components like cranes, hook arms, stabilizers and skip loader systems for maximum efficiency. This means that only one hydraulic tank is required, which also results in less weight and more space.
With the new PXP system, DAF has once again demonstrated its ability to provide optimal solutions for every transport requirement. In addition to that, DAF’s variable front-wheel drive offers specific benefits with regard to performance, weight and space in the chassis.
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