Great Plains 1520P Operator Manual User Manual
Page 53
5/6/2010
118-732M
51
Troubleshooting
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 30.
Coulters not set deep enough to cut
residue.
Check coulter adjustment in hitch
operator’s manual.
Opener set too deep.
Opener spring force too high.
20 Series Openers press wheel spring
force too high.
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
58.
20 Series Opener side depth wheels
not adjusted correctly.
Scraper worn or damaged.
Replace scraper.
Drill is not pulling level front-
to-back
Incorrect top link adjustment.
Readjust top hitch link to level drill.
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 40.
Needle valve(s) in sequence valve
plugged.
Open needle valves, cycle markers
slowly and reset needle valves, refer
to page 40.
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 40.
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 clip
Be sure retainer clip is facing oppo-
site way of chain travel
Problem
Cause
Solution