Great Plains NTA3010 Operator Manual - Manual (Page 27)

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Section 4 Troubleshooting
8/14/ NTA3010 and NTA3510 Air Drill Implement SN Z1370- 160-219M
Great Plains Mfg., Inc.
Section 4
Troubleshooting
Problem Possible Solutions
Erratic seeding or emergence pattern. Check all hoses and towers for air leaks.
Check seed distribution hoses for plugging.
Check for bad connection in electric clutch circuit.
Reduce ground speed.
Check that coulters and openers are aligned.
Check that opener disks turn freely.
Check for plugged seed tubes.
Increase opener spring pressure so openers penetrate low
spots. Refer to Opener Adjustment, “Adjustments,” page
22.
Seeding pattern is skipping rows. Check for plugged openers.
Check for plugging in secondary seed hoses.
Check for foreign objects in tower that are blocking outlet
to secondary seed hose.
Check if a secondary hose is disconnected from tower or
opener.
Check hoses for leaks or damage.
Planting depth varies between drill frame sections. Rephase lift cylinders. See Lifting the Drill, “Field Opera-
tions,” page 14.
Bleed air from lift cylinders. See Bleed the Hydraulics,
“Preparation and Setup,” page 12.
Check air pressure and properly inflate tires according to
Tire Inflation Chart, “Appendix,” page 33.
Check that all wheel cylinders are the correct size. The part
number is stamped in the rod-end castings of the cylinders
and should match the schematic in the parts manual.
Check that in-cab rocker switch is on during normal seed-
ing operations.
Check solenoid valve in hydraulic fold circuit. With fan run-
ning, in-cab rocker switch on and hydraulic selector valve
turned to Field position, pressure on cart gauge should
drop as implement is raised and solenoid is activated.
Adjust down pressure on wings. Refer to Wing Down-Pres-
sure Adjustment, “Adjustments,” page 22. Do not exceed
800 psi on the wing sections.
Check that drill frame sections are level. Refer to Level
Frame Side to Side, “Preparation and Setup,” page 11.