|
Shovels do not penetrate.
|
Too much harrow down-pressure.
|
Adjust. See Operating the Machine section.
|
|
|
Shovels worn out.
|
Replace.
|
|
|
Machine not level.
|
Level machine. See Operating the Machine section.
|
|
|
Lift cylinders not functioning properly.
|
See UNDERSTANDING DEPTH CONTROL SYSTEM in Operating the Machine section.
|
|
|
|
Level center frame and wings.
|
|
|
|
Assemble cylinders and hoses correctly.
|
|
|
|
Check for cylinder leakage. See your John Deere dealer.
|
|
|
Caster wheels set improperly.
|
Adjust. See Operating the Machine section.
|
|
|
Hard ground or adverse operating conditions.
|
Install depth adjustment clips on spring-reset standards. For spring-cushion standards, adjust opener down-pressure.
|
|
|
Standards loosening on bar or not maintaining proper angle.
|
Tighten U-bolts to the proper torque and equally so the same number of threads are exposed on both ends.
|
|
Plugging.
|
Wrong tool equipment.
|
Use correct tool for particular operating conditions.
|
|
|
Standards mislocated.
|
See your John Deere dealer.
|
| Symptom |
Problem |
Solution |
|
Frame lift does not function properly.
|
Hydraulic lock-up valve closed.
|
Open hydraulic lock-up valve.
|
|
|
Cylinders not functioning properly.
|
See UNDERSTANDING FRAME LIFT SYSTEM in Operating the Machine section.
|
|
|
|
IMPORTANT: Be sure all air is bled from lift system.
|
|
|
Cylinder leakage.
|
Repair or replace. See your John Deere dealer.
|
|
|
Bypass valve stuck open.
|
Replace filter on section that will not raise.
|
|
|
Insufficient tractor hydraulic pressure.
|
Check tractor hydraulic pressure: Use correct size cylinders for tractor pressure.
|
|
|
Hydraulic hoses not connected properly.
|
Reconnect properly.
|
|
Wing fold does not function properly.
|
Inner and Outer wings try to unfold simultaneously.
|
Adjust sequence valve.
|
|
|
Inner and Outer wings try to fold simultaneously.
|
Reduce flow rate.
|
|
|
|
Check that proper size orifices are installed on wing fold cylinders.
|
|
Plugged air hoses or manifolds.
|
Air volume too low.
|
Increase fan speed.
|
|
|
Ground speed too fast.
|
Reduce ground speed or metering rate.
|
|
|
Secondary hoses routed flat or uphill.
|
Reroute hoses correctly.
|
|
|
Foreign material blocking air system.
|
Clean air system.
|
|
|
Non-compatible fertilizers.
|
Do not mix Urea with Ammonium Nitrate fertilizer.
|
|
|
High relative humidity.
|
Use moisture resistant fertilizer.
|
| Symptom |
Problem |
Solution |
|
Plugged seed boots.
|
Backing or turning with seeding tool in ground.
|
Raise seeding tool before backing or turning.
|
|
|
Tools worn out.
|
Replace tools.
|
|
Uneven seed distribution between runs.
|
Air volume too low.
|
Increase fan speed.
|
|
|
Blockage in air lines or manifolds.
|
Clean air system.
|
|
|
Variation in secondary hose lengths or routing.
|
Trim hoses to uniform lengths and reroute correctly.
|
|
|
Improper assembly of header ring or air system.
|
Reassemble correctly.
|
|
|
Meter tuning rings not installed, or wrong number installed.
|
Install correct number of tuning rings for secondary header ports. See meter cartridge/hoe drill diagrams in Preparing the Machine section for information.
|
|
Seed damage.
|
Air volume too high.
|
Reduce fan speed.
|
|
|
Seeds too dry.
|
Use fresh seeds.
|