Liebherr LTM 1350-6.1 - Manual (Page 7)

LTM 1350-6. 1
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 preselecta-
ble by push button.
• Distinct reduction of the tyre wear
• Improvement of the manoeuvrability
• Stabile driving performance also at high speeds
• All 6 axles steerable, no lifting of the centre axles at crab steering
High safety standards –
complete know-how from Liebherr
• Centralizing 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 3, 4, 5 and 6 are
actively steered depending on the speed and
on the steering angle of the front axle. From
30 km/h the axles 3 and 4 will be adjusted to
straight driving and fixed. From 60 km/h
the axles 5 and 6 are also adjusted to
straight driving and fixed.
P2 All-wheel steering
The axles 3, 4, 5 and 6 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, 4, 5 and 6 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, 4, 5 and 6 are turned de-
pending 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, 4, 5 and 6
are steered by push buttons indepen-
dently from the steering angle of the
axles 1 and 2.
Centralizing cylinders at the rear
axles
• Automatic straight positioning of
the rear axles in case of failure