Great Plains 3N-4025P Operator Manual - Manual (Page 132)

128 3N-40P Table of Contents Index Great Plains Manufacturing, Inc.
196-538M Table of Contents Index 2014-01-29
Press wheel or openers
plugging Planting conditions too wet. Wait until drier weather.
Coulters not set deep enough to cut
residue. Check coulter adjustment.
Coulters set too deep, bring up excess
dirt and moisture. Check coulter adjustment.
Drill not set to run level from front to rear,
carrying enough weight on gauge wheels
to prevent “nosing over”, or set too low on
rear caster eyebolts allowing it to run
“nose high”. See “Frame Level” on page 72.
Opener set too deep. Readjust, 10 Series page 99
Readjust, 10HD Series page 107
Readjust, 20 Series page 114
Readjust, 25 Series page 119.
Opener spring force too high. Readjust, 10 Series page 99
Readjust, 10HD Series page 107
Readjust, 20 Series page 114
Readjust, 25 Series page 119.
20 or 25 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,
10 Series page 97
10HD Series page 105
20 Series page 111
25 Series page 119.
Press wheel or openers
plugging (cont.) 20 or 25 Series opener side depth wheels
not adjusted correctly. Readjust, 20 Series page 114
Readjust, 25 Series page 119
Openers plugging in no-till conditions. Drill at a slight angle to the rows.
Scraper worn or damaged. Replace scraper.
Hydraulic marker
functioning improperly Air or oil leaks in hose fittings or
connections. Check all hose fittings and connections
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 147.
Needle valve(s) in sequence valve
plugged. Open needle valves, cycle markers
slowly and reset needle valves, refer to
page 147.
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 limited by
the slot at the rod end of the marker
cylinder, refer to page 149.
Reverse marker disk to pull or throw dirt.
Problem Cause Solution