Great Plains YP1625 Operator Manual - Manual (Page 59)

7/12/2005 401-182M
57 Troubleshooting
Hydraulic marker functioning improp-
erly Air or oil leaks in hose fittings or
connections. 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 46.
Needle valve(s) in sequence valve
plugged. Open needle valves, cycle markers
slowly and reset needle valves, refer
to page 46.
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 46.
Reverse marker disk to pull or throw
dirt.
Planter does not fold or unfold fully Fold cylinders out of phase. Rephase cylinders, refer to page 22
Bleed fold circuit, refer to page 15
Problem Cause Solution
Note: For Veris Drive monitor troubleshooting refer to page 69-t.