Bleeding hydraulics – Great Plains NTA3010 Operator Manual User Manual
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NTA3010 and NTA3510
Great Plains Manufacturing, Inc.
160-219M-A
2014-03-26
Refer to Figure 10
2.
The drill’s fold/unfold circuit is only active and fully
powered if the air cart’s hydraulic fan is disabled by a
two-position valve
handle at the fan:
Closed (handle forward): Fan off;
Open (handle Left): Fan on.
Refer to Figure 11
3.
Markers (optional, third-party) share a circuit with the
air cart’s auger, controlled by a two-position selector
valve
on the cart. Handle settings:
Back: drill marker circuit enabled;
Forward: cart auger circuit enabled
At the drill, markers are typically controlled by a local
automatic sequence valve or solenoid valve (from a
cab switch).
Bleeding Hydraulics
To function properly, the hydraulics must be free of air. If
hydraulics have not been bled, they will operate with
jerky, uneven motions and could cause wings to drop
rapidly during folding or unfolding. During initial
implement setup (which may have been done by your
dealer) or if you replace a hydraulic component,
complete the following procedures.
High Pressure Fluid Hazard: Escaping fluid under pressure
can penetrate skin, causing serious injury. 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.
Bleed only at a
JIC (Joint Industry Conference, 37
°
flare) or
NPT (National Pipe Thread, tapered thread) fittings, and
never at
ORB (O-Ring Boss) or
QD (Quick Disconnect) fittings.
Figure 10
Cart Fan Shutoff Valve
26419
1
2
3
1
2
3
Figure 11
Cart Selector Valve
26417
1
3
2
1
2
3
Figure 12
Lift Cylinder Supported
16238