Great Plains NTA1300 Operator Manual - Manual (Page 30)

28 NTA 1000 and NTA 1300 148-528M 5/26/2006
Great Plains Mfg., Inc. Troubleshooting
Problem Solution
Drill raising and lowering rough and uneven Check for too little play in slide-block area. Refer to Maintenance, “Mainte-
nance and Lubrication,” Page 29.
Check for air trapped in hydraulic lines or cylinders. Bleed hydraulics if nec-
essary. Refer to Bleeding the Hydraulic Systems, “Preparation and Setup,”
page 9.
Coulters not going deep enough Retract tongue cylinder.
Add weight to hitch frame. Refer to Coulter Down Pressure, “Adjustments,”
Page 23.
Too much weight is being used by openers; set drill openers to lightest
spring setting. Refer to Opener Down Pressure, “Adjustments,” page 24.
Shorten coulter springs to increase down pressure. Refer to Coulter Spring ,
“Adjustments,” Page 21.
Lower Coulters on Frame. Refer to Coulter Depth, page 20.
Drill not tracking behind coulters Check if coulters are aligned with openers.
Check that pivot-lock tubes are in drilling position , page 14 .
Check if leaf spring is out of alignment. Refer to Leaf Spring Adjustment,
“Adjustments,” page 24.
Openers plugging in no-till conditions Drill across standing residue.
Drill Seeding too deep Change the press-wheel setting. Refer to Opener Depth, “Adjustments,”
page 22..
Remove weight from hitch.
Uneven seed spacing or uneven stand Check for plugging in seed cups.
Check if seed tubes are plugged.
Reduce ground speed.
Check that opener disks turn freely.
Increase opener down pressure so opener disks penetrate. Refer to Opener
Down Pressure, “Adjustments,” page 23..
Check for trash or mud build-up on optional Seed-Lok
® wheels.
Opener disks not turning freely Check for trash or mud build-up on disk scrapers. Readjust scrapers. Refer
to Disk Scraper Adjustment, “Adjustments,” page 24.
Check if scrapers are too tight, restricting disk movement. Refer to Disk
Scraper Adjustment, “Adjustments,” page 24.
Check disk bearings.
Check opener frame for possible damage.
Check if opener disks turn freely by hand but not in field. If so, reduce down
pressure on openers. Refer to Opener Down Pressure, “Adjustments,” page
24.
Check press-wheel adjustment for seeding depth. Refer to Opener Depth,
“Adjustments,” page 22.
Actual seeding rate
is different than desired Check see-rate setting. Refer to “Roger” manual.
Troubleshooting