Great Plains 2515 Operator Manual - Manual (Page 21)

19
Section 3 Adjustments
4/20/05 1515, 2015 and 2515 Three-Point Soybean Machine 173-159M
Great Plains Mfg., Inc.
Marker Adjustments
Folding Speed with Needle Valves
A needle valve controls the folding speed of markers that
are plumbed separately. The needle valve is near the rod
end of the marker cylinder. See Figure 3-15.
With tractor idling at a normal operating speed, adjust
marker folding to a safe speed. Turn adjustment knob
clockwise to reduce folding speed or counterclockwise to
increase folding speed. Excessive folding speed could
damage markers and void the warranty.
Figure 3-15
Needle Valve
Folding Speed with Sequence Valve
If markers are tied together with an optional sequence
valve, adjust folding speed with hex adjustment screws on
the sequence-valve body. See Figure 3-16. There is one
adjustment screw for raising speed (1) and one for lower-
ing speed (2). Identify adjustment screws by markings
stamped in valve body.
With tractor idling at a normal operating speed, adjust
marker folding to a safe speed.Turn adjustment screws
clockwise to decrease folding speed and counterclock-
wise to increase folding speed. Excessive folding speed
could damage markers and void the warranty.
After adjusting the folding speed, tighten jam nuts on hex
adjustment screws to hold settings.
Figure 3-16
Speed Adjustment, Sequence Valve
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14048
Disk Adjustment
Changing disk angle. If mark left by marker disk is not
clearly visible, adjust disk angle to make a wider mark. Re-
fer to Figure 3-17. Loosen two 1/2-inch bolts (1) holding
disk assembly (2). Rotate disk assembly as desired.
Figure 3-17
Disk Angle
Changing disk direction. To change the direction of cut
to make different marks in different soil conditions, refer to
Figure 3-18.
1. Reverse disk (1) by removing four lug bolts on disk
hub (2). Reserve disk and remount depth band (3) and
lug bolts.
2. Turn entire disk assembly by removing two 1/2-inch
bolts, washers and nuts (4). Turn assembly (5) over.
Reinstall 1/2-inch bolts and set disk angle as desired.
Figure 3-18
Direction of Cut Reversed
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