Liebherr LTM 1050-3.1 - Manual (Page 7)

LTM 1050-3. 1
7
Variable steering concept
Active rear-axle steering
The rear axles are actively electro-hydraulically controlled in accordance with
the speed and steering angle of the front axle.
Five different steering programmes (P) can be selected by touch button.
• Remarkably reduced tyre wear
• Improved manoeuvrability
• Stable driving condition even at high speeds
• All three axles can be steered
High safety standards –
entire know-how from Liebherr
• Centring cylinder for automatic straightening of rear axles in case of failure
• Two independent hydraulic circuits with wheel and engine driven hydraulic pump
• Two independent control computers
P1 Road steering
The axle 1 is mechanically steered by the
steering wheel. The axle 3 is actively steered
depending on the speed and on the steering
angle of the front axle. Above 30 km/h it will
be adjusted to straight driving and fixed
P2 All-wheel steering
The axles 2 and 3 are turned by the steering
wheel depending on the steering angle of the
front axle to provide for the smallest turning
radius
P3 Crab steering
The axles 2 and 3 are turned by the steering
wheel to the same direction as the steering
position of axle 1
P4 Reduced swing out
The axles 2 and 3 are turned depending on
the wheel turn of the 1. axle to minimize the
back swing of the rear of the chassis
P5 Independent rear axle steering
The axle 1 is steered by the steering wheel,
the axles 2 and 3 are steered by push but-
tons independently from the steering angle
of the axle 1
Centring cylinder on the rear axles
• Automatic straightening of rear
axles in case of failure