Great Plains NTA2007 Operator Manual - Manual (Page 31)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 27
2012-01-05 Table of Contents Index 166-372M
Hydraulic Hose Hook-up
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 colour coded to help
you hook-up hoses to your tractor outlets. Hoses that go
to the same remote valve have the same colour handles.
The fan pressure hose (black) must be connected to a
circuit capable of continuous flow at high volume.
Note: This implement is compatible only with tractors
having Closed Centre hydraulics.
Refer to Figure 7
To distinguish hoses on the same hydraulic circuit, refer
to handle symbols. The hose with an extended-cylinder
symbol feeds a cylinder base end. The hose with a
retracted-cylinder symbol feeds a cylinder rod end.
For the hydraulic fan, connect the hose with a retracted
cylinder symbol to the pressure side of the motor.
The fan motor further requires hook-up 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 167 prior to first hitching.
Protecting Fan Hydraulic Motor Seals
Low Pressure (Case) Drain Connection:
11. Attach case drain hose to low pressure drain
connection. 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
(2.7cm / 1.06in diameter) quick coupler.
13. Connect hydraulic hoses to tractor remotes.
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 6.4 mm (
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 7
Hose Handles
31733
Colour Hydraulic Function
Green Marker / Auxiliary
Blue Opener Lift
Yellow Wing Fold / Weight Transfer / Lock
Black Fan
“SUMP” Sump
“BRAKES” Hydraulic trailer brakes (Option)