Great Plains PT1230 AA1080 Operator Manual - Manual (Page 37)

35
Section 3 Adjustments
4/12/05 PT1230 Pull-Type Folding Planter 401-069M-B
Great Plains Mfg., Inc.
Offset. The closing wheels can be offset to help prevent
trash from plugging the closing wheels.
To offset the closing wheels:
1. Raise planter slightly to remove weight from closing
wheels.
2. Remove 5/8-inch bolt attaching wheel to press-wheel
arm. See Figure 3-18.
3. Move closing wheel to rear mounting hole and reattach
with 5/8-inch bolt. Torque bolt as recommended on
Torque Values Chart, “Appendix,” page 62.
Figure 3-18
Closing Wheel Offset
If the closing wheels are not offset, mount wheels in the
front holes of press-wheel arm.
Closing Disk Option
For proper seed-to-soil contact, the closing disks must
have enough down pressure to close the seed trench with-
out unnecessary soil compaction.
To adjust down pressure on closing disks, ratchet spring
cam to next cam height by turning head of support bolt (1)
clockwise. Refer to Figure 3-19.
Figure 3-19
Closing Disk and Tube Holes
17893
17890
Marker Adjustments
!
WARNING!
Pinching and crushing hazard. The moving markers could
pinch or crush bystanders. Never allow anyone near the planter
when cycling the markers. Reduce marker folding speed to a
safe speed.
!
WARNING!
Escaping fluid under pressure can have sufficient force to pene-
trate the skin. Check all hydraulic lines and houses before ap-
plying pressure. Fluid escaping from a very small hole can be
almost invisible. Use paper or cardboard, not body parts, to
check for suspected leaks. If injured, seek medical assistance
form a doctor that is familiar with this type of injury. Foreign
fluids in the tissue must be surgically removed within a few
hours or gangrene will result.
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 3-20
Flow Control Raise/Lower
15029
IMPORTANT: JIC fittings do not require high torque.
JIC and O-ring fittings do not require sealant. Always
use liquid pipe sealant when adding or replacing pipe
thread fittings. To avoid possible danger of cracking
hydraulic fittings from over tightening, do not use
plastic sealant tape.