Great Plains 3P4025AH Operator Manual - Manual (Page 81)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 77
2014-07-29 Table of Contents Index 411-099M
Press wheel
or row-units
plugging Planting conditions too wet. Wait until drier weather.
Too much pressure on row-units. Reduce down pressure on row-units.
Coulters set too deep, bring up
excess dirt and moisture. Check coulter adjustment.
Planter not set to run level from front
to rear. Check tool bar height page 20
Backed up with planter in the
ground. Clean out and check for damage.
Failed disc bearings. Replace disc bearings.
Disc blades worn. Replace disc blades.
Scraper worn or damaged. Side
depth wheels not set correctly. Adjust side depth wheels page.
Row-unit
discs not
turning
freely Row-unit plugged with dirt. Clean row-unit.
Planting conditions too wet. Wait until drier weather.
Incorrect side depth wheel
adjustment See “Side Gauge Wheel Adjustment” on page 58.
Seed-Lok
®
is plugging row-unit. Lock up Seed-Lok
®
, page 66.
Failed disc bearings. Replace disc bearings.
Bent or twisted row-unit frame. Replace row-unit frame.
Partially plugged row-unit seed tube. Lift up planter, expose bottom of seed tube and clean out.
Press
wheels not
compacting
the soil as
desired. Incorrect spring handle setting See “Press Wheel Adjustment” on page 66.
Insufficient row unit down-force See “Row Unit Down Pressure” on page 52.
Use of incorrectly shaped tire for
your conditions. Wedge shaped wheels work best on narrow spacings and in
wet conditions. Round edge wheels work best in wider row
spacings and drier conditions.
Not level front to rear. Check tongue height and top link adjustment.
Wheel stagger needs adjustment for
conditions See “Press Wheel Adjustment” on page 66.
Too wet or cloddy Wait until drier weather or rework ground.
Speed
Reading
Doesn’t
Match
Tractor
Monitor speed reading, using
optional radar, will only match tractor
with planter lowered.
(Speed reading with magnetic
pickup falls to zero when lifted.) If speeds don’t agree during planting (with planter lowered),
re-calibrate radar speed sensor with planter lowered.
General Troubleshooting
Problem Cause Solution