Mercedes-Benz Actros 2017, Руководство по эксплуатации

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qualified specialist workshop as soon as pos-
sible.
Longitudinal play cannot be checked at the cou-
pling jaw.
Example: securing knob
Before coupling up:
X
Apply the parking brake and release the ser-
vice brake of the trailer; see the manufactur-
er's operating instructions.
X
Chock the trailer's rear wheels to prevent it
from rolling away.
The unbraked front axle of the trailer must
remain pivotable.
X
Set the towbar supports to the height of the
trailer coupling; see the manufacturer's oper-
ating instructions.
Coupling up:
X Back up slowly until the trailer coupling locks.
After coupling up:
X Check that the coupling pin on securing
knob
:
is in the correct position or check the
control pin of the trailer coupling.
X
Connect the cable and compressed-air lines
(
Y
page 324).
Uncoupling
!
Semitrailer tractor vehicles with air suspen-
sion: before completely uncoupling, lower the
chassis frame until there is a gap between the
semitrailer plate and the semitrailer coupling.
Otherwise, the chassis frame will spring up
suddenly when uncoupling. This can cause
damage to the chassis frame and the semi-
trailer.
X Park the vehicle on a firm and level surface.
X Apply the parking brake.
X
Chock the trailer/semitrailer's wheels to
secure it against rolling away.
X Extend the saddle supports of the semitrailer;
see the manufacturer's operating instruc-
tions.
X
Set the trailer's towbar support to the height
of the trailer coupling; see the manufacturer's
operating instructions.
X
Remove the cable and compressed-air lines
(
Y
page 324).
X Open the trailer coupling/semitrailer cou-
pling; see the manufacturer's operating
instructions.
Vehicles with a trailer:
X
Drive forwards slowly.
Vehicles with a semitrailer:
X
Drive slightly forward until the semitrailer
coupling pin is free.
X Semitrailer tractor vehicle with air suspen-
sion: lower the chassis frame (
Y
page 297)
until there is a gap between the semitrailer
plate and the semitrailer coupling.
X Drive forwards completely.
X Fit the mudguard centre part.
Cables and compressed-air lines
Important safety notes
G
WARNING
If you climb onto or down from the vehicle in
order to connect/disconnect the cables and
compressed-air lines without appropriate
climbing aids, you could:
R
slip and/or fall
R
damage components, e.g. the battery
cover, and fall as a result
R
burn yourself on hot components
There is a risk of injury.
Always use secure climbing aids, e.g. a suita-
ble ladder.
324
Trailers/semitrailers
Driving mode