Great Plains 3PYP Operator Manual - Manual (Page 85)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 81
2014-09-09 Table of Contents Index 401-312M
Uneven seed
spacing.
Hydraulic meter drive motor rpm too
low for reliable control by proportional
valve. 1. Increase field speed.
2. Use a seed wheel with lower cell count.
Switch from 12 finger meters to 6 finger meters.
3. Install a low speed kit (page 115).
Excessive field speed. Reduce field speed.
Unclean seed. Use clean seed.
Seed-Lok
®
plugging. Lock up Seed-Lok
®
, page 76.
Row-unit disks not turning. See “Row-unit disks not turning freely.” in this
Troubleshooting chart.
Plugged row-unit seed tube. Lift up planter, expose bottom of seed tube and clean out.
Worn/rusted sprockets and/or chain
idler. Check and replace any worn/rusted sprockets or chain
idlers.
Partially plugged row-unit seed tube. Lift up planter, expose bottom of seed tube and clean out.
Lack of proper seed lubrication on
seed. Refer to Seed Lubricant, page 119.
Use of excessively sticky or wet seed
treatment. Check your treatment.
Inadequate contact wheel spring
pressure. Check for correct tire air pressure, page 125.
Air pressure in contact wheel incorrect. Check for correct tire air pressure, page 125.
Uneven seed
depth Excessive field speed. Reduce field speed.
Planting conditions too wet. Wait until drier weather.
Incorrect coulter depth setting. See coulter manual.
Excessive or improper row unit down
pressure spring setting. See 25 Series row-units, page 62.
Damaged seed tubes. Check seed tubes for damage.
Seed-Lok
®
building up with dirt. Lock up Seed-Lok
®
, page 76.
Row-unit not penetrating low spots. Adjust row-unit, page 62.
Rough planting conditions. Rework the field.
Seed firmer not in place and set to
correct tension. Refer to Keeton
®
Seed Firmer, page 76.
Row-unit
disks not
turning freely. Row-unit plugged with dirt. Clean row-unit.
Planting conditions too wet. Wait until drier weather.
Seed-Lok
®
is plugging row-unit. Lock up Seed-Lok
®
, page 76.
Failed disk bearings. Replace disk 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.
Problem Cause Solution