RUNNING GEAR OPERATION
46
Operating instructions • Semitrailer • 505369471-04 • 02/2019
lift axle control systems. The design and
arrangement of the control switch depends
on the vehicle equipment.
Using the lift axle's control switch, the
driver can interrupt the automation of the
lift axle control to activate the following
functions:
○
Starting aid:
Manually raise the lift
axle
A lift axle can be raised by force at a
maximum vehicle speed of 30 km/h
and up to 30% overload for the axle re-
maining on the ground.
○
Manoeuvring aid:
Manually raise the
lift axle
A lift axle can be raised by force at a
maximum vehicle speed of 30 km/h
and up to 0 % overload for the axle re-
maining on the ground.
○
Deactivating the lift axle automatic
system:
Manually lower the lift axles
The starting aid function refers to a lift axle
in the first position of the axle group. The
manoeuvring aid function refers to a lift
axle in the last position of the axle group.
Only the starting aid function is available if
more than one lift axle is installed on the
trailer. The automatic lift axle control is re-
activated by turning the ignition off and on
in the tractor unit.
505821725-01
7
5
6
11
10
8
4
2
1
9
3
< 5"
7
5
6
11
10
8
4
2
1
9
3
+
> 5"
500626977-01
P
P
515040284-01
Senken / Stopp / Heben
Lower / Stop / Raise
Abgesenkt
Lowered
Fahrt
Drive
500626979-01
1
Fig. 5-27:
Control unit
1
Lift axle control switch
► Operate the control switch time-de-
pendently (rotary push-button switch
with reset).
ü
The lift axle is raised in compliance
with legal regulations when the button
is actuated for less than 5 seconds
(starting aid).
ü
When operated for longer than 5
seconds, the lift axle automatic system
is deactivated and the lift axle remains
down regardless of the load state
(force lowered). This position is kept
as long as the ignition of the tractor is
not interrupted.
Fig. 5-28:
Control switch functions of the lift
axle control system
5.11
Rigid axle
KRONE trailers are equipped with rigid
axles.
Also observe the enclosed supplier
documentation.
5.12
Self-steering axle
KRONE trailers can be fitted with a self-
steering axle with a back-up interlock. The
self-steering axle is the rearmost axle of
the vehicle. When driving in reverse, the
steering axle is locked:
○
Automatically if the back-up spotlight is
activated on the tractor unit or
○
Manually (e.g. during manoeuvring
without supply and control connec-
tions).
