Great Plains 2N-3020 Assembly Instructions - Manual (Page 6)

6 24- and 30-Foot, No-Till Flat Fold Marker Option 113-502M 4/9/04
Great Plains Mfg., Inc.
Assembly Instructions
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Dual Marker Hydraulics
NOTE: JIC fittings do not require high torque. JIC and O-
ring fittings do not require sealant. To avoid cracking fit-
tings or castings from overtightening, do not use plastic
sealant tape.
Refer to Figure 1.
1. Attach the 90˚ swivel elbows (1) to the rod end of both mark-
er cylinders (2). Insert the orifices (7) in the base end of the
marker cylinders (2). Attach the 90˚ swivel elbows (1) to the
base end of the marker cylinders (2).
2. Uncoil and attach hoses (3 and 4) to the swivel elbows (1).
Notice that the longer hoses go to the rod end of the cylin-
ders.
3. Attach the two adapters (9) and the 90-degree elbows (6) in
the manifold valve (8) at ports A2 and B2. The manifold
valve is located in the rear-center of the main frame.
4. Attach the sequence valve (10) on the mounting bracket us-
ing the lock washers (11) and 3/8 x 7/8-inch bolts (12).
5. Install hydraulic hoses (13) on the sequence valve (10).
Connect port A2 on the manifold valve (8) to port 2 on the
sequence valve (10). Connect port B2 on the manifold valve
to port 1 on the sequence valve.
6. Connect the four hoses coming from the marker cylinders to
the sequence valve. Connect the base-end hoses (4) to
ports R1 and R2 (10) and the rod hoses (3) to ports C1 and
C2 as shown.
7. Route the hoses coming from the marker cylinders through
the frame member cut-outs and hose clamps. Run the hos-
es parallel to the hoses feeding the outer gauge-wheel cyl-
inder as shown in Figure 1 on page 5.
8. Fine tune the hose placement. Make a generous loop in
both hoses near the box flex hinge. This loop should be
large enough to allow the outer wing to flex without the hos-
es pulling tight. Maintain the loops by clamping the hoses in
the center hole of the existing hose clamps. Use the split
rubber sleeves as bushings between the clamps and the
marker hose. Use the cable ties (6) supplied with the kit to
hold the hoses away from any pinch point.
IMPORTANT: Read and complete Setup Adjustments,
page 7 before folding the markers.
Figure 1
Dual Marker Hydraulic Schematic
14683