Liebherr LTC 1045-3.1 - Manual (Page 9)

LTC 1045-3. 1
9
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. 5 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
Axle 1 is steered mechanically by using
the steering wheel. The axles 2 and 3 are
actively steered, depending on the speed
and the front axle lock angle. At speeds
of 30 km/h and higher they are set to
straight-ahead position and locked.
P2 All-wheel steering
Using the steering wheel the axle 3 is
turned in accordance with the steering
angle of axle 1 to achieve the smallest
possible turning radii.
P3 Crab steering
Axles 2 and 3 are turned in the same di-
rection as the wheel lock on axle 1 by us-
ing the steering wheel.
P4 Reduced swing-out
The axels 2 and 3 are turned in accord-
ance to the steering angle of the 1st axle
that the swing-out of the chassis back is
minimized.
P5 Independent rear-axle steering
Axle 1 is turned by using the steering
wheel; axles 2 and 3 are turned indepen-
dently of the wheel lock on axles 1 by
control levers.
Centring cylinder on the rear axles
• Automatic straightening of rear
axles in case of failure