Great Plains PT8030 V1013 Operator Manual - Manual (Page 36)

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Section 4 Troubleshooting
10/10/12 PT6030 and PT8030 Pull-Type Planter 401-032M-A
Great Plains Mfg., Inc.
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.
Blade does not mark The maximum marker down float is limited by the
slot in the pivot link. If the blade does not drop down
to follow depressions in the field, make sure the
marker cylinder is fully extended.
The blade may be reversed to pull dirt in or throw
dirt out depending on soil conditions.
Problem Possible Cause Solution