Maintenance - hydraulic system
221
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Valve description
No. Description No. Description
Y 1 Control valve (function 1) Y14 Middle left rotor arm
Y2 / Y3 Steering Y16 Rear left rotor arm
Y4 / Y8 Left supporting wheel Y18 Front right rotor arm
Y 5 / Y9 Right supporting wheel Y20 Middle right rotor arm
Y 6 / Y10 Front working width Y22 Rear right rotor arm
Y 7 / Y11 Rear swath width Y24 Control valve (function 2)
Y12 Front left rotor arm Y25 / Y26 Parallel offset
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Note
The emergency manual operation is only intended for transporting the machine from the field to
the nearest workshop.
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Before executing the emergency manual operation, move the machine about two metres
forwards to straighten the supporting wheels.
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15.4.1 Parallel offset
The cylinders for the parallel offset must be retracted.
If this is not the case, carefully follow the procedure described below!
• Switch off the engine
• Secure the tractor and machine against rolling away.
• Screw set-screws (Y25 and Y26) all the way in
• 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 cylinders for the parallel offset are fully retracted
• Switch off the engine
• Screw the set-screws (Y25 and Y26) all the way out
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15.4.2 Moving all rotor arms from working position to transport position
The following instructions must be strictly observed!
• Switch off the engine
• Secure the tractor and machine against rolling away.
• Screw in the set-screws (Y18, Y20, Y22 right side of the machine) and
(Y 12, Y14, Y16 left side of the machine)
Note
The valves (Y18, Y20, Y22, Y 12, Y14, Y16 ) are for the supply line (no adjustable throttles are
fitted in the supply line)
• 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 rotor arms are raised into the transport position
• Switch off the engine
• Screw out the set-screws (Y18, Y20, Y22 right side of the machine) and
(Y 12, Y14, Y16 left side of the machine)
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