Great Plains NTA2007HD Installation Instructions - Manual (Page 12)

12 2014+ Single Fold Marker Front Parts Great Plains Mfg., Inc.
113-921M Front Parts 2013-10-16
Charge and Bleed System
Refer to Figure 16
66. Put on gloves and safety glasses.
67. Connect the QD ends of the marker supply
hoses to cart outlets A and B. Either hose may
be connected to either port.
68. Remove any strapping that holds the marker arms
closed.
Pinch / Crush / Striking Hazards:
Clear all objects from the sweep arcs of the marker arms.
Have all persons stand clear. The next steps fully deploy the
arms, and the motion may be sudden and irregular due to air
in the system.
69. Set the remote circuit assigned to the markers to
Neutral. Activate hydraulic power.
Note: Implement is still lowered. Normally, the
implement is raised for marker operations. With no
third stage arm or disk assembly installed, the
markers are short enough and light enough that
they will not strike the ground during initial
exercising.
70. While charging the system, bleed the markers per
the instructions in the air drill implement Operator
Manual, Maintenance topic.
71. Slowly move the marker circuit lever to Extend.
Observe which marker begins to move, and if
neither, slowly reverse the lever to Retract.
72. Continuing slow operation, gradually extend a
marker arm on one side. When it reaches full
extension, slowly reverse the lever and fold the
marker. When fully folded, set lever to Neutral.
73. Slowly reverse the lever. The other marker should
begin to deploy. Fully extend the marker, then fully
fold it.
74. Set circuit to Float and shut off hydraulic power.
Inspect the system for hydraulic leaks.
75. Repeat step 71 through step 73 two more times.
76. Perform another leak inspection.
77. Fold both markers. Set circuit to Neutral. Shut off
hydraulic power.
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.
Figure 16
Cart Hose Connections
31349
81
A
81
B
81