Great Plains 3N4010HDA Operator Manual - Manual (Page 21)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 17
2013-09-24 Table of Contents Index 196-444M
Tractor Hydraulic Hose Hookup
High Pressure Fluid Hazard:
Only trained personnel should work on system hydraulics!
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin, causing serious injury. Avoid the hazard by
relieving pressure before disconnecting hydraulic lines. Use a
piece of paper or cardboard, NOT BODY PARTS, to check for
leaks. Wear protective gloves and safety glasses or goggles
when working with hydraulic systems. If an accident occurs,
seek immediate medical attention from a physician familiar
with this type of injury.
Refer to Figure 9
Great Plains hydraulic hoses have color coded handle
grips to help you hookup hoses to your tractor outlets.
Hoses that go to the same remote valve are marked with
the same color.
1. Connect sump return line.
2. Connect pass-through fan hoses to circuit desig-
nated for hydraulic-motor control.
3. Connect transport-lift hoses to tractor remote valve.
4. Connect fold/marker hoses to tractor remote valve.
5. Connect lock hoses to tractor remote valve.
Sump First and Last
Seals in the hydraulic fan motor can be damaged if the
return line is pressurized. Always connect the SUMP
hose first and disconnect it last. The sump hose has a
larger (1.06in) quick-connect coupling.
The hose, and large connector, labeled SUMP refers to high
volume hydraulic motor return and should always be
connected to the port on the tractor capable of handling high
volume low pressure return oil. DO NOT connect this line to
low volume case drain lines or low volume sump lines on the
tractor. See tractor manufactures recommendations for high
volume hydraulic motor return.
Fan Priority
If your tractor has a priority circuit for hydraulic motors,
connect the auger/fan (Yellow) to this circuit. The fan
uses only the Extend side of this circuit (return flow is via
Sump line).
Cart Hydraulics
There is also a hydraulic connection between the drill
and trailing air cart. The steps for making this connection
are detailed in the air cart Operator manual.
Figure 9
Color Coded Hose Grips
31733
Color Hydraulic Function
Blue Drill Lift Cylinders
Gray
Drill: Fold Cylinders
via selector valve if installed to:
Optional: Markers
Yellow
Drill: <no function>
pass-through to
Cart: Fan and Auger
(Extend side of circuit only)
Orange Drill: Lock Cylinders
<none>
Drill: <no function>
pass-through to
Cart: Sump: Fan/Auger Return