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RUNNING GEAR OPERATION
28
Operating instructions • Box Liner • 515108039-02 • 11/2018
Disconnecting C-coupling heads
þ
The parking brake on the tractor unit is
applied.
þ
The parking brake on the trailer is ap-
plied
(see "5.6.2 Parking brake", pg. 31)
.
► Always disconnect the supply com-
pressed air coupling first.
► Disconnect the brake compressed air
coupling.
► Disconnect the power supply (vehicle
lighting) and the brake power supply
(EBS).
ü
The supply and control connections
are disconnected.
5.5
Draining the compressed air
tanks
!
WARNING
Risk of accident due to condensation
water!
Condensation water in the compressed air
tank can cause corrosion and affect the
functionality of the brake system and the
air suspension. Frozen condensation wa-
ter can lead to total failure of the brake
system and to serious accidents.
► Check the compressed air tank for the
presence of condensation water.
► Drain any existing condensation wa-
ter.
► Drain existing condensation water
more frequently in case of low or
strongly fluctuating outside temperat-
ures.
The tractor vehicles are fitted with air dry-
ers. This means that condensate in the
compressed air is largely prevented. Dur-
ing cold periods of the year, or when air
humidity is high, condensation water can
still form and collect in the compressed air
tank. The compressed air supply for the
brake system and the air suspension is
stored in the compressed air tanks. Exist-
ing condensation water can be drained us-
ing the water drain valve.
2
1
Fig. 5-10:
Compressed air tank
1
Compressed air tank
2
Water drain valve
► Push the valve pins of the water drain
valves on all compressed air tanks to
the side until the condensation water is
fully drained.
ü
The condensation water is drained.
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