Great Plains 2420F Operator Manual User Manual
Page 48
1520F, 2020F, 2420F, 1510HDF, &
2010HDF
8/14/2006
46
Excessive seed cracking
Use slower drive type and position seed rate handle to higher setting.
Position seed cup handle 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.
Press wheel or openers plugging
Consider soil conditions - may be too damp or wet.
Reduce down pressure on openers. Refer to Opener Down Pressure,
“Adjustments,” page 26.
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 the build-up
by disassembling seed cups and scraping the foreign substance from
the 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 26.
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 40.
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
40.
Reverse the blade to pull or throw dirt. Refer to Marker Adjustments,
“Adjustments,” page 40.
Chain-debris/retainer clip
Be sure retainer clip is facing opposite way of chain travel.
Problem
Solution