ROAD OPERATIONS
Operating instructions • Load Carrier • 505410638-02 • 07/2019
91
Unhitching the turnframe trailer
INFO
After uncoupling the brake lines, close off
the coupling heads and the connection
sockets for the electrical cables/power to
prevent contamination.
► Position the train as straight as pos-
sible.
► Apply the parking brake on the tractor
unit.
► Apply the parking brake on the trailer
(see "5.9.2 Parking brake", pg.37).
► Use wheel chocks to prevent the trailer
from rolling away (see "5.1 Using wheel
chocks", pg.22).
► If necessary, arrest the height adjust-
ment device.
► Disconnect the supply and control
lines (see "5.6 Supply and control connec-
tions", pg.31).
► Use the coupling's hand lever to move
the coupling bolts to the “opened” posi-
tion.
► Slowly drive the tractor unit away in a
straight line.
► Use the coupling's hand lever to move
the coupling bolts to the “closed” posi-
tion.
ü The turnframe trailer is unhitched.
7.3 Manoeuvring the trailer
without a connected com-
pressed air supply
INFO
Manoeuvring without a connected com-
pressed air supply is only permissible in
exceptional cases.
To manoeuvre the trailer without a connec-
ted compressed air supply, the service
brake (see "5.9.1 Service brake", pg.37) must
be released.
500626977-01
P
P
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"
Fig.7-2: Control unit for brake system of
central axle trailer
1 Red control knob for the parking brake
2 Black control knob for the service
brake
Fig.7-3: Control unit for brake system of
turnframe trailer
1 Red control knob for the parking brake
2 Black control knob for the service
brake
þ The trailer's compressed air supply is
not connected.
► Press in the black control knob for the
service brake.
► Press in the red control knob for the
parking brake (see "5.9.2 Parking brake",
pg.37).
► The trailer brake is released.
ü The trailer can be manoeuvred.
► Pull out the black control knob for the
service brake again after manoeuvring.