Great Plains NTA2007HD Operator Manual - Manual (Page 27)

Great Plains Manufacturing, Inc. Contents Index Preparation and Setup 23
04/04/2011 Contents Index 166-283M
Hydraulic Hose Hookup
High Pressure Fluid Hazard:
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 assistance from a physician familiar
with this type of injury.
Only trained personnel should work on system hydraulics!
Great Plains hydraulic hoses are color coded to help you
hookup hoses to your tractor outlets. Hoses that go to
the same remote valve are marked with the same color.
The fan pressure hose (yellow) must be connected to a
circuit capable of continuous flow at high volume.
Note: This implement is compatible only with tractors
having Closed Center hydraulics.
Refer to Figure 5
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.
For the hydraulic fan, connect the hose under the
retracted cylinder symbol to the pressure side of the
motor.
The fan motor further requires hookup of a (third) case
drain line, which returns lubricating/cooling fluid.
Marker hoses are provided on the cart even if markers
are not installed on the implement. See “Marker Hose
Tips” on page 162 prior to first hitching.
Protecting Fan Hydraulic Motor Seals
Low Pressure (Case) Drain Connection:
11. Attach case drain hose to low pressure drain con-
nection. See Notice at right.
12. Connect low pressure motor return hose, marked
“SUMP”, to a high volume low pressure return port.
The sump line is distinguished by a large (1.06in/
2.7cm diameter) quick coupler.
13. Connect hydraulic hoses to tractor remotes.
Null4:
Null4:
Null4:
Null4:
Equipment Damage Risk:
Case Drain Hose must be attached first, prior to inlet and
return hoses being connected, to prevent damage to hydraulic
motor seals. The case drain has the smaller
1 ⁄
4
in I.D. hose and
small, flat-face, low-seep connector. DO NOT connect the case
drain line to a power-beyond port.
Case Drain Hose must be detached last, to prevent damage to
the fan motor. To allow pressure relief during temperature
cycles, it is normal for this line to release small amounts of oil
even when stored with the connector elevated.
Figure 5
Hose Label
27270
Color Hydraulic Function
Orange Marker / Auxiliary
Blue Opener Lift
Yellow Wing Fold / Weight Transfer / Lock
Fan (via shutoff valve)
Black Sump
“BRAKES” Hydraulic trailer brakes (Option)