Great Plains 3N-3020P Operator Manual - Manual (Page 54)

3N-3010P and 3N-3020P
196-248M 4/23/2010
52
Press wheel or openers plug-
ging Planting conditions too wet. Wait until drier weather.
Drill not running level front-to-back in
the field. Readjust top link to level drill.
Drill frame height incorrect. Adjust drill frame height, page 18.
Coulters not set deep enough to cut
residue. Check coulter adjustment in hitch
operator’s manual.
Opener set too deep. Readjust, page 33 or page 35.
Opener spring force too high. Readjust, page 33 or page 35.
20 Series Openers press wheel spring
force too high. Readjust, page 35.
20 Series Openers 1 x 12 press wheel
stagger adjustment not correct. Correct press wheel stagger.
Backed up with drill in the ground Clean out and check for damage.
Failed disk bearings Replace disk bearings.
Disk blades worn. Adjust or replace disk blades, page
61.
20 Series Opener side depth wheels
not adjusted correctly. Readjust, page 34.
Scraper worn or damaged. Replace scraper.
Drill is not pulling level front-
to-back Incorrect drill hitch height. Re-adjust hitch-height. See “Hitch
Height Adjustment,” page 18.
Hydraulic marker functioning
improperly Air or oil leaks in hose fittings or con-
nections. Check all hose fittings and connec-
tions for air or oil leaks.
Low tractor hydraulic oil level. Check tractor hydraulic oil level.
Loose or missing bolts or fasteners. Check all bolts and fasteners.
Needle valve plugged. Open needle valve, cycle markers
slowly and reset needle valve, refer to
page 43.
Needle valve(s) in sequence valve
plugged. Open needle valves, cycle markers
slowly and reset needle valves, refer
to page 43.
Marker disk does not mark Marker folding linkage does not have
enough slack to allow marker disk to
drop into field depressions. Maximum down float should be lim-
ited by the slot at the rod end of the
marker cylinder, refer to page 43.
Reverse marker disk to pull or throw
dirt.
Trash build up on harrow Level harrow or flatten tines.
Harrow stirring out seed Adjusted too steep Level harrow.
Chain Debris in retainer Be sure retainer clip is facing oppo-
site way of chain travel
Problem Cause Solution