Great Plains V-300F Operator Manual - Manual (Page 21)

Great Plains Manufacturing, Inc. Setup 17
11/15/2007 148-057M-A
Hydraulic Connections
!
WARNING
Escaping fluid under pressure can have sufficient force to pen-
etrate the skin. Check all hydraulic lines and hoses before
applying pressure. Fluid escaping from a very small hole can
be almost invisible. Use paper or cardboard, not body parts, to
check for suspected leaks. If injured, seek medical assistance
from a doctor that is familiar with this kind of injury. Foreign
fluids in the tissue must be surgically removed within a few
hours or gangrene will result.
Only trained personnel should work on system hydraulics!
Great Plains hydraulic hoses are color coded to help you
hook-up hoses to your tractor outlets. Hoses that go to
the same remote valve are marked with the same color.
The drill consumes hydraulic power for two or three cir-
cuits.
Refer to Figure 8
To distinguish hoses on the same hydraulic circuit, refer
to plastic hose label. The hose under an extended-cylin-
der symbol feeds a cylinder base end. The hose under a
retracted-cylinder symbol feeds a cylinder rod end.
Make sure all tractor levers are in neutral or float, or trac-
tor hydraulics are off, before making connections.
Note: If the tractor has only one circuit capable of provid-
ing continuous flow, connect the Lift/Lower drill cir-
cuit (Red) to that tractor circuit.
Note: If the tractor circuit can only be locked in continuous
flow at one end of the lever travel, connect the drill’s
Lift/Lower Retract/“base end” to that side of the
tractor circuit.
Hydraulic Charge and Bleed
The V300 and V300F is normally shipped with the
hydraulic hoses disconnected. They are installed by your
dealer, but the hydraulic system may not have been
charged and bled.
If there is any question about the possibility of air in the
hydraulic system, bleed all the systems per the instruc-
tions beginning on page 96.
If the system has not been charged, have 11.3 liters (3.5
gallons) of hydraulic oil available for refilling the tractor
reservoir.
IMPORTANT !
The standard model V300 and V300F require a trac-
tor with “Closed Center” hydraulics. If the intended
tractor has “Open Center” hydraulics, the drill
requires a kit to convert it to open center operation.
Have your Great Plains dealer contact the factory.
Figure 8
Plastic Hose Label
817-348c
17641
Color V300 Hydraulic Function
Red Transport Lift and
Hydraulic Down-Pressure
Blue Tongue Height
Markers (see footnote
*
)
* Markers are optional. Standard markers are on a
dedicated circuit. An optional selector valve is
available, and shares the tongue circuit.
Markers
*