GREAT PLAINS 1007NT, Operator'S Manual, Page: 42 / 86

150-290M 03/18/2019
38 1007NT
Great Plains Manufacturing, Inc.
Troubleshooting
Problem Cause Solution
Uneven seed spacing or
uneven stand
Excessive field speed. Reduce field speed.
Feed cups plugging. Clean out feed cups.
Seed tubes plugging. Clean out seed tubes.
Opener discs not turning freely. See “Opener discs not turning freely” in this
Troubleshooting section.
Ground drive wheel slippage Check frame height. Solution may require
drier conditions.
Seed cups too wide Use faster Drive Type speed and close feed
cup flutes to a more narrow position.
Chain skipping. Check chain slack and wear.
Mud build-up on Seed-Lok wheel Lock-up Seed-Lok (page 37) or wait for drier
conditions.
Uneven seed depth
Excessive field speed. Reduce field speed.
Planting conditions too wet. Wait until drier weather.
Drill not level Readjust, page 16.
Casters lifting drill Set lift-assist circuit to Float.
Opener discs not turning
freely
Trash or mud build up on disc
scraper. Adjust scraper, page 36.
Scraper adjusted too tight, restricting
movement. Adjust scraper, page 36.
Failed disc bearings. Replace disc bearings.
Bent or twisted opener frame. Replace opener frame.
Planting conditions too wet. Wait until drier weather.
Too much opener down pressure. If opener discs turn freely by hand but not in
field, reduce down pressure, page 36.
Incorrect press wheel adjustment. Readjust press wheel, page 37.
Actual material rate
different than desired
Incorrect frame height Check frame height (page 16).
Build up of seed treatment in feed
cup. Clean out seed treatment from feed cups.
Incorrect rate adjustment. Check gearbox, sprocket, seed-rate handle
and seed door settings. Perform calibration if
not already done.
Excessive seed cracking
Excessive field speed. Reduce field speed.
Feed cup flutes not open enough. Open feed cups to a wider position.
Feed cup door handle not open
enough. Open feed cup door handle to a lower posi-
tion.