Great Plains CTA4000 Operator Manual - Manual (Page 25)

23
Section 4 Troubleshooting
2/1/06 CTA4000 Air Drill Implement 160-269M
Great Plains Mfg., Inc.
Section 4
Troubleshooting
Problem Possible Solutions
Uneven seed spacing or uneven stand. Check all hoses, towers and bin lids for air leaks.
Check seed distribution hoses for plugging.
Check for bad connection in electric-clutch circuit.
Reduce ground speed.
Check that opener disks turn freely.
Check for plugged seed tubes.
Increase opener down pressure so openers penetrate low spots. Refer to
Opener Down Pressure, “Adjustments,” page 19.
Seeding pattern is skipping rows. Check for plugged openers.
Check for plugging in secondary seed hoses.
Check for foreign objects in tower that are blocking outlet to secondary seed
hose.
Check if a secondary hose is disconnected from tower or opener.
Check hoses for leaks or damage.
Uneven depth across drill. Bleed air from opener-lift cylinders. See Bleeding Hydraulics, “Preparation
and Setup,” page 12.
Check air pressure and properly inflate tires according to Tire Inflation Chart,
“Appendix,” page 30.
Adjust down pressure on wings. Refer to Weight Transfer, “Operating Instruc-
tions,” page 17. Do not exceed 800 psi on the wing sections.
Check that opener frame is level across drill. Refer to Eyebolt Adjustment,
“Preparation and Setup,” page 13.
Implement creeps up or down in differ-
ent sections during field operation. Bleed air from opener-lift cylinders. Refer to Bleeding Hydraulics, “Preparation
and Setup,” page 12.
Check opener-lift cylinders for oil leaks. If a cylinder is leaking oil past the pis-
ton, refer to the parts manual for a seal kit and service information.
Check tractor hydraulic valve for leakage.
Metering system does not shut off
when turning in the field. Check if cam clamp for electric-clutch switch is loose. To adjust, see Electric
Clutch Switch Adjustment, “Adjustments,” page 21.
Seed is scattered on the ground
behind the drill. Increase seeding depth. Refer to Opener Depth, “Adjustments,” page 20.
Reduce fan speed.
Reduce ground speed.
Check if openers are partially plugged with dirt.
Check for holes in or disconnected seed hoses.