Great Plains 606NT Operator Manual - Manual (Page 43)

2014-02-10 Table of Contents Index 151-061M
Great Plains Manufacturing, Inc. Table of Contents Index 39
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.
Opener not penetrating low spots Adjust opener spring (page 34).
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 level (page 17).
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 34).
Incorrect press wheel adjustment Readjust press wheel (page 38).
Actual seed rate
different than desired Incorrect tire pressure Check tire pressure (page 60).
Incorrect frame height Check frame height (page 17).
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. See Seed Rate Manual.
Excessive seed cracking Excessive field speed Reduce field speed.
Feed cup flutes not open enough Open feed cups to a wider position. See
Seed Rate Manual.
Feed cup door handle not open
enough Open feed cup door handle to a lower
position. See Seed Rate Manual.