For more information about
the axles, please check the
axle's user manual which was
delivered with your vehicle.
If the axles are used other
than the conditions specified
in the manufacturer’s man-ual
or if their maintenance is not
made properly, your vehicle
may be out of warranty.
If the vehicle is equipped with
emergency brake chambers,
apply the parking brake after
checking the drum temperatu-
re. Never use the parking bra-
ke when the drums are very
hot (the drum may crack).
3.7.1. Self-Steering Axles
Your vehicle may be equipped with a
self-steering axle to increase the maneu-
verability capacity during forwarding driv-
ing.
This
type
of
axle
is
usually
positioned at the rear axle of the vehicle
and has a locking mechanism.
The turning radius of the ve-
hicle which is equipped with a
self-steering axle is different
from standard vehicles. In ad-
dition, there will be differen-
ces in the maneuverability of
the vehicle in cases where the
self-steering axle is locked or
unlocked. Please be careful
about the self-steering axles.
3.7.1.1. Locking The Steering Axle
For vehicles with Electronic Braking Sys-
tem (EBS), the self-steering axle can be
locked automatically when the reverse
gear is engaged in order to reverse. It is
also possible to lock this axle manually.
Drive the vehicle straight ahead so that
the steering axle is in a straight position
before the steering axles will be locked.
If the automatic axle locking function is
active in your vehicle, the steering axle
will be locked automatically when you
engage reversing gear.
If you want to lock axles manually, make
sure that the steering axle is in a straight
position and close the valve (1) or turn
the button to the off position.
The locking valve will be positioned to-
wards you when the self-steering axle is
locked manually.
Reversing with unlocked stee-
ring axles is dangerous. The
semi-trailer can be separated
from the tractor. Before going
backwards be sure that self-
steering axle is locked.
Self-Steering Axle Release Valve
3.7.1.2. Unlocking The Self-Steering
Axle
The self-steering axles, which lock auto-
matically when reverse gear is engaged,
will automatically unlock when the ve-
hicle is moving forward.
To release the manually locked self-
steering axle, turn the valve handle 90°
(2) clockwise or move the button to the
open position.
