RUNNING GEAR OPERATION
Operating instructions • Semitrailer • 505369471-04 • 02/2019
35
5.6
Supply and control connec-
tions
!
DANGER
Disconnected supply and control con-
nections pose a risk of accident!
Driving without the supply and control con-
nections being connected between the
tractor unit and the trailer affects the driv-
ing and brake behaviour and is prohibited
by law. There is a risk of accidents due to
the malfunction.
Before each trip:
► Connect the compressed air supply.
► Connect the electrical power supplies
for the vehicle lighting.
► Connect the electrical power supplies
for the brake system.
!
WARNING
Damaged or inadequate supply and
control connections pose a risk of acci-
dent!
Damaged or inadequate supply and con-
trol connections between the tractor unit
and trailer affect driving and braking beha-
viour and can lead to accidents.
► Ensure that all compressed air con-
nections are properly connected and
not leaking.
► Ensure proper functioning of the
couplings.
► Replace damaged rubber seals or
damaged coupling heads on the
tractor unit and trailer.
► Ensure that the EBS plug is properly
locked.
!
WARNING
Improperly connecting and disconnect-
ing the supply and control connections
poses a risk of accident!
Improperly connected compressed air and
electrical lines affect driving and braking
behaviour and can lead to accidents.
► Observe the connection sequence of
the lines when hitching and unhitch-
ing.
► Always close the coupling heads with
the protective caps after unhitching
the brake lines.
For axle and brake control as well as air
and power supply, the trailer is equipped
with various connections on its front side.
1
2
3
4
5
6
Fig. 5-13:
Possible arrangement of the sup-
ply and control connections
1
Supply compressed air coupling (red)
2
Brake compressed air coupling (yel-
low)
3
Vehicle lighting socket N ISO 1185, 7-
pin (black)
4
Vehicle lighting socket ISO 12098,
15‑pin
5
Brake EBS socket power supply ISO
7638
6
Vehicle lighting socket S ISO 3731, 7-
pin (white)
More information about the plug and
socket assignment can be found in the
technical data
(see "13.2 Plugs and socket pin
.