Great Plains 800 Operator Manual User Manual
Page 39
Great Plains Manufacturing, Inc.
Troubleshooting
35
2011-10-25
175-057M
Uneven seeding depth
See “Opener Depth (Press Wheel Height)” on page 33.
See “Opener Frame Down-Force” on page 28.
Check that drill tongue matches tractor drawbar height. See “Hitch Preparation” on
page 12.
Chain-debris/retainer
clip
Be sure retainer clip is facing opposite way of chain travel.
Press wheel not
compacting the soil as
desired
Reset press-wheel depth. See “Opener Depth (Press Wheel Height)” on page 33.
Increase down pressure. See “Opener Frame Down-Force” on page 28.
Grain box not emptying
evenly
Certain models do not have the same number of seed cups between each bulkhead
divider. The compartment with more seed cups empties faster.
Press wheel or openers
plugging
Consider soil conditions. Drilling in damp or wet conditions can increase this problem.
Reduce down pressure. See “Opener Frame Down-Force” on page 28.
Do not back up or allow drill to roll backward with openers in ground.
Check Seed-Lok
®
wheels for mud accumulation. Lock up wheels if necessary.
Seed Firmer Lock-Up” on page 32.
Seed-cup sprockets
locked up or seed-drive
shaft twisted
Check for foreign material lodged in seed-cup sprockets.
Check for build-up of dried liquid insecticide in seed cups. Remove the build up by
disassembling each seed cup and scraping the foreign substance from the turning
surfaces.
Openers drill too deep
(Bulldozing)
If operating at high down-pressures, See “Opener Frame Down-Force” on page 28.
Reduce down pressure on openers. See “Opener Frame Down-Force” on page 28.
Check press-wheel adjustment. See “Opener Depth (Press Wheel Height)” on
page 33.
Openers raise when
tractor hydraulic lever
is held forward and
lower when lever is held
back
Reverse hydraulic hoses at tractor quick couplers.
Opener frames do not
float over uneven
terrain
Check that hydraulic circuit is in Neutral.
Problem
Solution