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
from rolling away (see "5.1 Using wheel
chocks", pg.22).
► Wind down the landing leg winch until
the coupling ring is slightly lifted off the
coupling funnel (see "5.2 Landing leg
winches", pg.23).
► 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 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 (see "5.1 Using wheel
chocks", pg.22).
► 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
to the coupling height (see "5.4 Draw
fork", pg.27).
► 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
unit (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-
erly secure them (see "5.1 Using wheel
chocks", pg.22).
► Disengage the parking brake on the
trailer (see "5.9.2 Parking brake", pg.37).
► Set the air suspension to the driving
position (see "5.10 Air suspension",
pg.41).
► Carry out a departure check (see "7.1
Commissioning before each trip", pg.88).
ü The turnframe trailer is hitched and
ready for travel.
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