Great Plains 8030P G1022 Operator Manual - Manual (Page 27)

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Section 3 Adjustments
60303P and 80303P Three-Point Planter 401-008M-A 5/2/07
Great Plains Mfg., Inc.
Folding Speed
The marker hydraulic system is equipped with needle
valves to control how fast each marker operates. The nee-
dle valves are built into the sequence valve body. There
are two hex adjustment heads, one for controlling marker
speed up and one for controlling marker speed down.
Excessive folding speeds can cause marker damage.
With the tractor engine at an operating rpm, loosen jam
nut and adjust the needle valve to limit the marker to a safe
operating speed. Make sure all adjustments are made
with warm oil. Fold the marker up and down a few times
and recheck for pinching and kinking of hoses.
Figure 3-18
Flow Control Raise/Lower
Marker Width
Refer to Figure 3-19.
To adjust marker width, loosen the marker tube u-bolt (1)
and slide marker tube in or out to dimension A. After ad-
justing, retighten u-bolt.
Dimension A is measured from the center line of the plant-
er to the marker disk. The dimensions provided are ap-
proximate. After adjusting, field check the actual
dimension.
For 6-row, 30 inch rows, A = 180 inches.
For 8-row, 30 inch rows, A = 240 inches.
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IMPORTANT: JIC fittings do not require high torque.
JIC and O-Ring fittings do not require sealant. Al-
ways use liquid pipe sealant when adding or replac-
ing pipe-thread fittings. To avoid possible danger of
cracking hydraulic fittings from over tightening, do not
use plastic sealant tape.
Figure 3-19
Marker Disk Adjustment
Disk Adjustments
The mark left by the marker disk may be changed by two
methods.
Refer to Figure 3-20.
1. Disk Angle
To change the angle of cut, loosen bolts (1), rotate
disk assembly and retighten bolts.
2. Direction of Cut
The disk may be mounted to throw dirt in or out, mak-
ing different marks in different soil conditions. To
change the direction of cut:
a. Reverse depth band (2) and blade (3) by remount-
ing the four lug bolts on the disk hub.
b. Reverse angle of assembly by removing the ad-
justment bolts (1) and turning the spindle assem-
bly (4) one half turn. Reinstall and tighten all bolts.
Figure 3-20
Marker Disk Adjustments
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