Great Plains PT1230 AA1080 Operator Manual - Manual (Page 41)

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Section 4 Troubleshooting
4/12/05 PT1230 Pull-Type Folding Planter 401-069M-B
Great Plains Mfg., Inc.
Low count at low rpms and higher count
at higher rpms with brush meter. Foreign material lodged in upper retaining brush. Remove seed disc and remove
foreign material from between brush holder and bristles. Clean with compressed
air.
Worn upper retaining brush. Replace brush.
Low count at higher rpms and normal
count at low rpms with brush meter. Seed disc worn in agitation groove area. Replace seed disc.
High population count with brush meter. Seed size too small for seed disc. Switch to larger seed or proper seed disc.
Incorrect transmission setting. Check planting-rate charts and reset transmission if
necessary.
Upper brush too wide (fanned out) for small seed size. Replace upper brush.
Upper retaining brush laid back on brush
meter. Seed treatment buildup on brush. Remove brush and wash with soap and water.
Dry thoroughly before reinstalling.
Buildup of foreign material at base of brush. Remove brush holder and brush.
Clean with compressed air and reinstall.
Irregular or incorrect seed spacing. Consider your planting speed. Slow down if necessary. For correct speed, refer to
Planting Rate Charts, “Adjustments,” beginning on page 22.
Check tire pressure. Refer to Tire Inflation Chart, “Appendix,” page 62.
Drive wheels slipping. Reduce down pressure on row unit. Refer to Row Unit
Adjustments, “Adjustments,” page 32.
Check that correct sprockets are installed on transmission shafts. Refer to Plant-
ing Rate Charts, “Adjustments,” beginning on page 22.
Seed spacing not as indicated in charts. Check that tires are inflated to proper pressure. Refer to Tire Inflation Chart,
“Appendix,” page 62.
Examine seed for inconsistent size. Do field check and adjust sprockets accord-
ingly.
Check that correct sprockets are installed on the transmission shafts. Refer to
Planting Rate Charts, “Adjustments,” beginning on page 22.
Excessive speed may be causing row-unit bounce. Reduce ground speed when
planting.
Charts are approximate. Slight variations due to wear may produce seed-spacing
variations.
Scattering of seeds. Reduce planting speed.
Check seed tube for proper installation.
Examine seed tube for wear or damage. Replace seed tube if necessary.
Seed tubes or openers plugging. Do not allow planter to roll backward when lowering. Lower planter only when trac-
tor is moving forward.
On four-wheel-drive tractors, avoid turning tractor when planter is down and sta-
tionary.
Inconsistent seed depth. Increase down pressure on row unit. Refer to Row Unit Adjustments, “Adjust-
ments,” page 32.
Inspect seed tube for plugging or improper installation. Check that seed tubes are
hooked properly in shank of row unit.
None of the row units are planting. Pin between counter-shaft and seed transmission sheared. Repair cause of pin
shearing and replace pin.
Right or left side does not plant. Loss of power to point row clutches. Check wiring and fuses.
Problem Possible Cause and Solution