ROAD OPERATIONS
90
Operating instructions • Load Carrier • 505410638-02 • 07/2019
Unhitching the central axle 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
.
► Wind down the landing leg winch until
the coupling ring is slightly lifted off the
coupling funnel
.
► Disconnect the supply and control
(see "5.6 Supply and control connec-
.
► 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 central axle trailer is unhitched.
Hitching the turnframe trailer
► Before coupling, check:
○
Is the tractor unit's permissible towing
capacity adequate for the trailer?
○
Has the permissible drawbar load
been observed?
○
Has the permitted maximum length
been observed?
○
Do the tractor unit's trailer coupling
design and the trailer's coupling eye
design match?
○
Do the position of the draw gear and
the coupling height match?
► 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
► Release the front axle brake.
► Move the tractor unit towards the
coupling ring, leave approx. 1 m dis-
tance.
► Set the coupling ring of the draw fork
.
► Use the coupling's hand lever to move
the coupling bolts to the “opened” posi-
tion.
► Lock the coupling funnel in open posi-
tion.
► Vacate the danger area between the
tractor unit and trailer!
► Begin coupling by backing up the
tractor unit. The coupling automatically
takes place.
► Apply the parking brake on the tractor
(see "5.9.2 Parking brake", pg. 37)
► Check if the coupling bolt is properly
locked into place.
► Connect the supply and control lines
(see "5.6 Supply and control connections",
pg. 31)
.
► If necessary, release the height adjust-
ment device.
► Remove the wheel chocks and prop-
► Disengage the parking brake on the
(see "5.9.2 Parking brake", pg. 37)
► Set the air suspension to the driving
.
Commissioning before each trip", pg. 88)
ü
The turnframe trailer is hitched and
ready for travel.