Maintenance - hydraulic system
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15.4.3 Retracting the hydraulic cylinder for the working width and for the swath width
The following instructions must be strictly observed!
• Switch off the engine
• Secure the tractor and machine against rolling away.
• Screw in the set-screws Y6, Y10 (working width) and Y7, Y11 (swath width)
• Start the engine and pressurise the hydraulic system.
• Using a pointed object, press in the magnetic plunger of control valve (Y 1) and hold it
pressed in until the hydraulic cylinders for the working width are retracted
• Switch off the engine
• Screw out the set-screws (Y6, Y10, Y7, Y11)
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15.4.4 Raising the right and left supporting wheels
The following instructions must be strictly observed!
• Switch off the engine
• Secure the tractor and machine against rolling away.
• Screw in the set-screws Y 4, Y 8 (left supporting wheel) and Y 5, Y 9 (right supporting
wheel)
• Start the engine and pressurise the hydraulic system.
• Using a pointed object, press in the magnetic plunger of control valve (Y 1) and hold it
pressed in until the supporting wheels are fully raised
• Switch off the engine
• Screw out the set-screws (Y 4, Y 8, Y 5, Y 9)
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15.4.5 Moving the auxiliary steering to the centre position
The auxiliary steering must be in the centre position (see the chapter on operation "Auxiliary
steering")
15.4.6 Activating the self steer
The following instructions must be strictly observed!
• Switch off the engine
• Secure the tractor and machine against rolling away.
• Screw in the set-screws (Y 2, Y 3 )
• Start the engine and pressurise the hydraulic system.
• Using a pointed object, press in the magnetic plunger of control valve (Y 1) and control
valve Y 24 until the cylinder for the self steer is fully extended
• Switch off the engine
• Screw out the set-screws (Y 2, Y3 )
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