Great Plains 2000 Operator Manual - Manual (Page 30)

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Section 4 Troubleshooting
2012-03-27 12, 15 and 20 Foot Series Three-Point Drills 118-389M-A
Great Plains Mfg., Inc.
Drill boxes not emptying evenly Certain models do not have the same number of cups between each divider
of bulkhead. The section with more cups will empty sooner.
Press wheel or openers plugging Consider soil conditions–may be too damp or wet.
Reduce down pressure on openers. Refer to Opener Down Pressure, “Adjust-
ments,” page 14.
Do not back up or allow drill to roll backward with openers in the ground.
Check Seed-Lok wheels. If conditions are too wet, you may need to remove
the wheels.
Seed-cup sprockets locked up or
twisted seed-cup drive shaft Check for foreign material stuck in the seed-cup sprockets.
Check for dried liquid insecticide in seed cups. Remove build up by disas-
sembling seed cups and scraping foreign substances from turning surfaces.
Drill is not pulling level (parallel to
ground, front to rear) Readjust top hitch link to level drill.
If using pull-package or hitch equipped with a telescoping top link, increase
opener spring pressure to rock drill forward. Refer to Opener Down Pressure,
“Adjustments,” page 14.
Gauge wheel leans to left or right Realign brackets where gauge wheel is attached to main frame by adjusting
u-bolts.
Check if axle bearings are securely attached to gauge-wheel arm.
Uneven fertilizer metering Check for plugging in metering gate.
Check to see if seed tubes are plugged.
Reduce ground speed.
Check for lumps in the material. Screen these out if needed.
Check all drive chains, sprockets, keys and pins.
Check for build-up on metering wheel or gate. High humidity can cause build
up and uneven feeding.
Fertilizer metering system locked up or
damaged drive system Check for dried fertilizer in the metering tray. Remove build up by disassem-
bling the tray and washing or scraping buildup from metering surfaces.
When humidity is high, take extra care to avoid drive-system damage due to
material buildup. Clean out feed system if parking drill. After parking drill
overnight, check for binding before going to field by turning drive system by
hand.
Hydraulic marker functioning improp-
erly Check all hose fittings and connections for air or oil leaks.
Check that chain on the folding marker is slack when marker is both fully
extended and raised. Refer to Marker Adjustments, “Adjustments,” page 23.
Check tractor hydraulic oil level.
Check all bolts and fasteners.
Open needle valve, cycle markers slowly and reset needle valve if plugged.
Marker blade does not mark Check that the marker folding linkage has enough slack to allow the marker
disk to drop into field depressions. Maximum down float should be limited by
the slot at the rod end of the marker cylinder–not by the chain. Refer to
Marker Adjustments, “Adjustments,” page 23.
Reverse the blade to pull or throw dirt. Refer to Marker Adjustments, “Adjust-
ments,” page 23.
Chain-debris/retainer clip Be sure retainer clip is facing opposite way of chain travel
Problem Solution