Great Plains PD8070 Operator Manual - Manual (Page 62)

401-479M Table of Contents Index 2014-07-23
58 PD8070 Table of Contents Index Great Plains Manufacturing, Inc.
Troubleshooting
Problem Possible Cause and Solution
One row not planting
seed Seed meter not engaged. See “Seed Drive Clutch” on page 26.
Check for foreign material in hopper. Clean hopper and finger pickup mechanism.
See “Seed Meter Setup and Adjustment” on page 52.
Check that seed hopper is full of seed.
Check if drive chain for row unit is off of sprocket or broken. Replace chains as
necessary.
Meter not engaging
properly Check that meter input shaft is aligned with meter clutch shaft. See “Seed Drive
Clutch” on page 26.
Row unit is skipping Check for foreign material or obstruction in meter. Inspect and clean meter.
Check that adjustment nut in meter is adjusted between 2.5 and 2.8 N-m
(22 and 25 inch-pounds). Tighten if necessary. See “Seed Meter Setup and
Adjustment” on page 52.
Check tension on finger pickup. Tighten if necessary.
Check for broken meter fingers. See “Seed Meter Setup and Adjustment” on
page 52.
Consider your planting speed. Increase planting speed to within recommended
range. For correct speed, See “Seed Rate: Planting Ground Speed” on page 35.
Planting too many
doubles
Consider your planting speed. Decrease planting speed to within recommended
range. See “Seed Rate: Planting Ground Speed” on page 35.
Check that adjustment nut in meter is adjusted between 2.5 and 2.8 N-m
(22 and 25 inch-pounds). Tighten if necessary. See “Seed Meter Setup and
Adjustment” on page 52.
Check brush in seed meter for wear. Inspect and replace if necessary. See “Seed
Meter Setup and Adjustment” on page 52.
Over planting Check carrier plate in seed meter for wear. Inspect and replace if necessary. See
“Seed Meter Setup and Adjustment” on page 52.
Under planting Check if belt in seed meter is installed backward. Remove and install correctly. See
“Seed Meter Setup and Adjustment” on page 52.
Check for weak springs in finger pickup meter. Replace as necessary. See “Seed
Meter Setup and Adjustment” on page 52.
Spring not properly installed. Remove finger from seed meter and correct. See “Seed
Meter Setup and Adjustment” on page 52.
Seed belt catching or dragging. Replace belt. See “Seed Meter Setup and
Adjustment” on page 52.
Brush dislodging seed. Replace brush. See “Seed Meter Setup and Adjustment” on
page 52.
Irregular or incorrect
seed spacing Consider your planting speed. Slow down if necessary. See “Seed Rate: Planting
Ground Speed” on page 35.
Check tire pressure. See “Tire Inflation Chart” on page 97.
Drive wheels slipping. Reduce down pressure on row unit. See “Row Unit Down
Pressure” on page 46.
Check that correct sprockets are installed on transmission shafts. See “Seed Rate:
Sprocket Combinations” on page 35.