Great Plains PT8030 V1012 Operator Manual - Manual (Page 45)

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Section 6 Troubleshooting
PT6030 and PT8030 Pull-Type Planter 401-032M 10/10/12
Great Plains Mfg., Inc.
Inconsistent seed depth. Rough seed bed. Adjust down pressure springs
Partially plugged or improperly installed seed tube. Inspect and clean. Ensure seed tubes are hooked
properly in unit shank.
Seed tube improperly installed. Install properly.
Planter will not lower. Pressure and return hoses not fully engaged in
SCV outlets ---
Planter frame raises or lowers slowly. Lower tractor hydraulic pressure. Tractor standby pressure must be a minimum of 15
SCV not in hare position. ---
Erratic or uneven lift. Air in hydraulic system. Remove air.
Planter will not raise. Tractor SCV bypassing oil. Readjust SCV lever linkage. (See Tractor Opera-
tor’s Manual.)
Re-cut vacuum blower rubber stop.
All row units not planting on planter. Bolt in countershaft sprocket to seed transmission
sheared. Repair cause of pin shearing and replace cotter
pin.
Closing wheels leave severe imprint in
soil. Too much spring force. Adjust closing wheel spring.
Closing wheels not firming soil around
seed Insufficient spring force. Adjust closing wheel spring.
Closing wheel running on top of seed fur-
row. Improper centering. Realign.
Closing wheels not applying equal force. --- Relevel.
Consistent shearing of drill shaft cotter
pin. Drill shaft not aligned properly. Loosen bearing and align shaft.
Drive wheel chain consistently falls off. Chain may be too long. Remove offset link.
Chain links stiff. Oil or replace chain.
Chain dislodged by trash. Add trash guards.
No seed being planted. Seed hopper empty. Fill seed hopper.
Markers not alternating. Marker hoses not connected to marker valve cor-
rectly. ---
Air in marker valve. Bleed marker hydraulic system.
Marker valve defective. Replace valve. See your Great Plains dealer.
Marker floats off ground. Air in hydraulic system. Bleed marker lift cylinder.
Alternator valve defective. Replace valve. (See your Great Plains dealer.)
Leaking tractor SCV. ---
Marker cylinder not dropping down into J-slot.
(Hose loop too short.) Lengthen marker hydraulic hose loops.
Hydraulic marker functioning improperly Check all hose fittings and connections for air and
oil leaks.
Check tractor hydraulic oil level.
Check all bolts and fasteners.
If markers do not alternate:
a. Check tractor flow controls and set to
maximum oil flow.
If problem still exists:
b. Remove Valve, disassemble, and check
for contamination or damage to spool.
Re-assemble.
Problem Possible Cause Solution