Great Plains NTA3007HD Predelivery Manual - Manual (Page 54)

50 NTA907HD
166-207Q 03/29/2010
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 (orange) must be connected to a
circuit capable of continuous flow at high volume.
The lift/down-pressure hose (blue) must be connected to
a circuit capable of continuous pressure.
Note: This implement is compatible only with tractors
having Closed Center hydraulics.
Refer to Figure 89
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 hydraulic fan and auger drive motors, connect the
hose under the retracted cylinder symbol to the pressure
side of the motor. Connect the hose under the extended
cylinder symbol to the return side of the motor.
The fan motor further requires hookup of a (third) case
drain line, which returns lubricating/cooling fluid.
Protecting Fan Hydraulic Motor Seals
Low Pressure (Case) Drain Connection:
Attach case drain hose to low pressure drain connection.
Note: Case drain hose must be hooked up first and un-
hooked last to prevent damage to hydraulic motor
seals. It has the smaller
1 ⁄
4
in I.D. hose and small,
flat-face, connector.
Connect low pressure motor return hose to low pressure
return connector. It is distinguished by a large (1.06in/
2.7cm diameter) quick coupler.
Connect hydraulic hoses to tractor remotes.
Figure 89
Plastic Hose Label
27270
Color Hydraulic Function
White Fold / Tilt / Marker (Option)
Blue Opener Lift / Down-Pressure
Orange Fan / Auger (Option)
Yellow Transport Hook
“BRAKES” Hydraulic trailer brakes (Option)
Case Drain Hose must be attached first,
prior to inlet and return hoses being connected.
Case Drain Hose must be detached last,
to prevent damage to the fan motor.
DO NOT connect the case drain line to a
power-beyond-port.