![Krone AX 250 D Original Operating Instruction Download Page 86](http://html1.mh-extra.com/html/krone/ax-250-d/ax-250-d_original-operating-instruction_2004854086.webp)
Start-up
86
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7.3.1
Connecting the hydraulic lines
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•
Switch the control units on the tractor to float position.
•
Depressurise the hydraulic system on the tractor and the machine.
•
Shut down and safeguard the machine, see chapter Safety -> Safety routines, "Shutting
down and safeguarding the machine".
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Fig. 41
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Tractor with constant flow pump:
•
Connect the pressure line (red P) to a single-action control unit on the tractor, nominal
width 20 / plug size 4.
•
Connect the return-flow line (blue T) to the unpressurised return flow on the tractor, nominal
width 25/sleeve size 4.
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or
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Tractor with load-sensing pump and signal line (LS):
•
Connect the pressure line (red P) to the Load Sensing connection on the tractor, nominal
width 20/plug size 4.
•
Connect the return-flow line (blue T) to the unpressurised return flow on the tractor, nominal
width 25/sleeve size 4.
•
Connect the signal line (green LS) to the connection for the Load Sensing control, nominal
width 12/plug size 2.
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or
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Tractor with constant pressure pump:
•
Connect the pressure line (red P) to a single-action control unit on the tractor, nominal
width 20 / plug size 4.
•
Connect the return-flow line (blue T) to the unpressurised return flow on the tractor, nominal
width 25/sleeve size 4.
•
Place the signal line (green LS) into the retainer on the machine.
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Additional For (AX 250 L /AX 280 L/ AX 250 D):
A single-acting control unit: lifts or lowers the folding grid (plug size 3)
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7.4
Hydraulic brake (Export)
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•
Shut down and safeguard the machine, see chapter Safety -> Safety routines, "Shutting
down and safeguarding the machine".
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A hydraulic brake is provided for certain export versions. In this version, the corresponding
hydraulic hose is connected with the control valve on the tractor side. The brake is activated by
actuating the tractor brake pedal.
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