Great Plains 2515 Operator Manual - Manual (Page 26)

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Section 4 Troubleshooting
1515, 2015 and 2515 Three-Point Soybean Machine 173-159M 4/20/05
Great Plains Mfg., Inc.
Excessive seed cracking Use slower drive type and position seed-rate handle to a higher setting.
Position seed-cup-door handles to a lower notch.
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.
Check that you have the same drive type set on both drill boxes.
Opener disks or closing wheels plugging Consider soil conditions–may be too damp or wet.
Reduce down pressure on row unit. Refer to Row Unit Adjustments, “Adjust-
ments,” page 14.
Do not back up or allow drill to roll backward with row units in the ground.
Check for trash or mud build-up on Seed-Lok wheels. Lock up wheels if neces-
sary. Refer to Seed-Lok Lock Up, “Adjustments,” page 22.
Adjust contact point between side gauge wheels and opener disks. Refer to Side
Gauge Wheels, “Adjustments,” page 15.
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 the build up by disassem-
bling seed cups and scraping the foreign substance from the turning surfaces.
Drill is not pulling level; row units do not
stay in the ground Readjust top hitch link to level drill.
If drill is equipped with optional lift assist, add weight to lift assist. See Figure 2-1,
page 12.
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.
Hydraulic marker functioning improperly Check all hose fittings and connections for air or oil leaks.
Check that the chain on the folding marker is slack when the marker is both fully
extended and raised. Refer to Marker Adjustments, “Adjustments,” page 19.
Check tractor hydraulic oil level.
Check all bolts and fasteners.
Check if needle valve is plugged. If so, open needle valve, cycle markers slowly
and reset needle valve.
Marker disk 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 Adjust-
ments, “Adjustments,” page 19.
Reverse the blade to pull or throw dirt. Refer to Marker Adjustments, “Adjust-
ments,” page 19.
Soil plugging between side gauge
wheels and opener disks on row unit Adjust side gauge wheels closer to opener disks. Refer to Side Gauge Wheels,
“Adjustments,” page 15.
Problem Solution