Great Plains NTA3010 Operator Manual - Manual (Page 28)

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Section 4 Troubleshooting
NTA3010 and NTA3510 Air Drill Implement SN Z1370- 160-219M 8/14/
Great Plains Mfg., Inc.
Implement creeps up or down in different sections during
field operation. Bleed air from lift cylinders. Refer to Bleed the Hydraulics,
“Preparation and Setup,” page 12.
Check wheel cylinders for oil leaks. If a cylinder is leaking
oil past the piston, refer to the parts manual for a seal kit
and service information.
Check tractor hydraulic valve for leakage.
Wing gauge wheels make deep divots in field. Check that in-cab rocker switch is on while seeding.
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.
Check electric clutch height switch and cam clamp on
rockshaft. Refer to Electric Clutch Switch Adjustment,
“Adjustments,” page 23.
Metering system does not shut off when turning in the
field. Check if cam clamp for rockshaft electric clutch height
switch is loose. To adjust, see Electric Clutch Switch
Adjustment, “Adjustments,” page 23.
Seed is scattered on the ground behind the drill. Increase seeding depth. Refer to Seeding Depth, “Adjust-
ments,” page 20.
Reduce fan speed.
Reduce ground speed.
Check if openers are partially plugged with dirt.
Check for holes in or disconnected seed hoses.
Secondary, 1-inch seed hoses are plugging. Increase fan speed. Refer to Field Operations, “Operating
Instructions,” page 17.
Check hoses for damage and replace if necessary.
Check for debris in seed that is too large for hose.
Take up extra slack in hoses. Leave just enough slack for
wing down flex and opener-body travel.
Reroute hoses so there are no sharp bends.
Primary, 2 1/2-inch seed hoses are plugging. Increase fan speed. Refer to Field Operations, “Operating
Instructions,” page 17.
Check hoses for damage and replace if necessary.
Reroute hoses so there are no sharp bends.
Check if metering system is not shutting off when fan is
off, filling primary hoses with seed. If so, fan hydraulic
pressure switch (part number 823-083C) may be faulty or
improperly adjusted. Refer to the cart parts manual for
pressure-switch location.
Press wheels not compacting soil as desired. Reset press wheels. Refer to Press Wheel Adjustment,
“Adjustments,” page 21.
Increase down pressure on disk openers. Refer to Opener
Adjustment, “Adjustments,” page 22.
Problem Possible Solutions