Great Plains 2525A Operator Manual User Manual
Page 68
64
2025A/2525A
Great Plains Manufacturing, Inc.
118-999M
2013-06-04
Hydraulic
marker
functioning
improperly,
or not at all
Marker/Fold switch set to Fold.
CFM Switch must be set to “Marker”. Set tractor remote cir-
cuit to Neutral or Float before operating switch.
Marker/Aux valve set to Aux
On a drill with optional Auxiliary Hydraulics, selector valve
must be set to Marker for markers to function. Set tractor
remote circuit to Neutral or Float before changing valve.
Air or oil leaks in hose fittings or con-
nections.
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(s) plugged.
Open needle valves, cycle markers slowly and reset needle
valves, refer to page 98.
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 chain, refer to
page 99.
Reverse marker disk to pull or throw dirt.
Speed
Reading
Doesn’t
Match
Tractor
Monitor speed reading will only
match tractor with planter lowered
If speeds don’t agree during planting (with planter lowered),
re-calibrate radar speed sensor with planter lowered.
General Troubleshooting
Problem
Cause
Solution