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When the trailer couplings are not in use, they must be covered.
3.23.3
Hydraulic trailer brake valve
The hydraulic trailer brake valve (optional equipment) operates with the pressure
of the tractor hydraulics, controlled by the tractor brakes.
The trailer brakes are connected to the tractor with a quick coupling at the rear
part of the tractor.
GUID-067368C4-2DF8-4D2A-9395-91F79E765C26
1. Quick coupling for the trailer brakes (ISO 5676)
WARNING: When the tractor is towing a trailer, the brake pedals must
be locked together. The brakes are not to be used individually for
steering.
WARNING: The pressure of the air pressure system must be at its
maximum, about 7-8 bar, before driving the tractor with a trailer
equipped with air pressure brakes.
DANGER: The hydraulic trailer brakes do not engage when the
parking brake is engaged.
DANGER: When the engine is not running, the trailer brakes do not
work.
DANGER: The quick coupling for hydraulic trailer brakes must be
connected when bleeding the brakes. If the quick coupling is not
connected, the brakes will not be bled. This will cause the brakes to
malfunction.
WARNING: When the tractor is towing a trailer, the brake pedals must
be locked together. The brakes are not to be used individually for
steering.
WARNING: Always test the operation of the trailer brakes in safe
ground after connecting a trailer with brakes.
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3. Operation
1
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