Great Plains YP1630F-1670 Operator Manual - Manual (Page 75)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 71
2012-12-27 Table of Contents Index 401-832M
Air lines
plugging
between air
box and rows Fan too slow. Speed up fan.
Improper hose routing, sags or kinks With planter unfolded, hoses should for a gentle “S”
shape through the holders, with no deep sags.
Planter will not
lower Check that pressure and return hoses are
fully engaged in remote outlets.
Planter frame
raises or
lowers slowly
Lower tractor hydraulic pressure. Tractor operating
pressure must be a minimum of 10 340 kPa (1500 psi).
Operate tractor with flow control lever in the unrestricted
position. Refer to your tractor operator’s manual.
Erratic or
uneven lift Check for air in hydraulic system. Bleed system of air if
necessary.
Planter will not
raise
Tractor hydraulic system bypassing oil. Readjust
tractor’s hydraulic lever linkage. Refer to your tractor
operator’s manual.
Hydraulic
marker
functioning
improperly, or
not at all Marker/Fold switch set to FOLD or OFF. Hydraulic Selector switch must be set to “Marker”. Set
tractor remote circuit to Neutral or Float before
operating switch.
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 49.
Needle valve(s) in sequence valve
plugged. Open needle valves, cycle markers slowly and reset
needle valves, refer to page 49.
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 49.
Reverse marker disk to pull or throw dirt.
General Troubleshooting
Problem Cause Solution