Liebherr LTM 1100-4.2 - Manual (Page 7)

LTM 1100-4. 2
7
Variable steering concept
Active rear axle steering
The rear axles are electro-hydraulically actively steered depending on the
speed and the steering angle of the front axles.
5 steering programs (P) are preselectable by push button.
• Distinct reduction of the tyre wear
• Improvement of the manoeuvrability
• Stable driving performance also at high speeds
• All 4 axles steerable
High safety standards – complete know-how
from Liebherr
• Centring cylinders for automatic straightening of the rear axles in case of failure
• Two independent hydraulic circuits with wheel driven and motor driven hy-
draulic pumps
• Two independent steering computers
P1 road steering
The axles 1 and 2 are mechanically steered
by the steering wheel. The axle 4 is actively
steered depending on the speed and on
the steering angle of the front axle. From 30
km/h it will be adjusted to straight driving
and fixed. Axle 3 is none steered for road
driving.
P2 all-wheel steering
The axles 3 and 4 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 3 and 4 are turned by the steering
wheel to the same direction as the steering
position of axle 1 and 2.
P4 reduced swing out
The axles 3 and 4 are turned depending on
the wheel turn of the front axles to minimize
the back swing of the rear of the chassis.
P5 independent rear axle steering
The axles 1 and 2 are steered by the steering
wheel, the axles 3 and 4 are steered by push
buttons independently from the steering angle of
the axles 1 and 2
Centring cylinder at the rear axles
• Automatic straight positioning of
the rear axles in case of failure