New Holland PS2045, Service Manual

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INTRODUCTION
HYDRAULIC SYSTEM
Through the triple control valve (5) assembled on the
machine frame, and the joystick type electric control (6),
attached to the tractor, is possible to select the desired
hydraulic function:
• I — up / down the transport drive wheels.
• II — lift row units (free passage of oil, circuit without
solenoid valve).
• III — moves the drawbar of the machine between the
transport and operation mode.
NOTE: After using the control (6) in position "I or III", re-
turn the control lever to the center position. This will pre-
vent the heating of the control valve coil
(6) .
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Disengage the machine of the tractor
1. With the control lever (6) in the central position "II",
raise the row units with remote control.
2. Install locks (7) of the row units.
3. Release pressure in the hydraulic circuit: if the remote
control has the "Floating" position, use it for this pur-
pose. If there is no "Floating", shut down engine and
move the remote control lever for both sides until the
stroke ends.
4. Remove the hoses (4) .
5. Lower and lock the support stand.
6. Disengage drawbar (2) of the lower lift arms of the
tractor.
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