See “row unit disks not turning freely.” in – Great Plains 2525F Operator Manual User Manual
Page 48
44 2020F, 2025F, 2520F and 2525F
118-232M
01/23/2012
Excessive seed
cracking
Excessive field speed.
Slow down. Check Seeding Rate Chart for
correct maximum field speed.
Seed cup door needs to be opened one
step for this seed.
Adjust seed cup door.
Seed Rate too low for seed size
Increase Seed Rate Handle setting, and
reduce Drive Type setting.
Unclean seed.
Use clean seed.
Damaged, old or dry seed.
Use clean, new seed.
Row unit disks not
turning freely.
Opener plugged with dirt.
Clean opener.
Planting conditions too wet.
Wait until drier weather.
Seed-Lok™ is plugging opener.
Drill frame height incorrect.
Check drill frame height, page 15.
Drill not level front-to-back in the field.
Readjust top link to level drill.
Opener side depth wheels not adjusted
correctly.
too tight - dragging on blade
too loose - allowing dirt between
blade and wheel
Check opener adjustments, page 37.
Opener press wheel spring force is set too
high.
Check press wheel adjustments, page 40.
Too much blade-to-blade contact.
Take shims under head of bolt and put
between opener and disk bearing, see
page 36 for information.
Failed disk bearings.
Replace disk bearings.
Bent or twisted opener frame.
Replace opener frame.
Partially plugged opener seed tube.
Raise drill, expose bottom of seed tube and
clean out.
Hydraulic marker
functioning
improperly
Leaks in hose fittings or connections.
Check all hose fittings and connections for
leaks.
Low tractor hydraulic oil level.
Check tractor hydraulic oil level.
Loose or missing bolts or fasteners.
Check all bolts and fasteners.
Air in lines.
See “Marker Cylinder Bleeding” on
page 48.
Needle valve plugged.
Open needle valve, cycle markers slowly
and reset needle valve, refer to page 27.
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 cylin-
der, refer to page 26.
Insufficient disc angle for conditions
Increase disc angle, or reverse marker disc
entirely. See page 26.
Problem
Cause
Solution