Great Plains NTA3010 Operator Manual - Manual (Page 56)

52 NTA3010 and NTA3510 Table of Contents Index Great Plains Manufacturing, Inc.
160-219M-A Table of Contents Index 2014-03-26
Uneven depth across
drill
Drill not level See “Level Frame Side to Side” on page 19.
Lift cylinders may also need bleeding. See
“Bleeding Lift Hydraulics” on page 17.
Cylinders out of phase Re-phase cylinders
Weight transfer inoperative Check valve handle, monitor soft key and gauge
reading
Tire pressures not equal Check and inflate
Weight transfer to wings too high
or too low. See “Weight Transfer” on page 42.
Weight circuit flow reversal Check lever position and hookup. Recheck fan
rotation on any changes.
Press wheel heights not all the
same Set T-handles the same.
Drill height changing or
creeping Air in system See “Bleeding Lift Hydraulics” on page 17.
Worn lift components. If a cylinder is leaking oil past a seal, consult the
Parts Manual and replace the seal.
Tractor hydraulic malfunction Confirm by using a different circuit for lift.
Seeding pattern
skipping rows Plugged openers Check that disks turn freely. Check scrapers.
Seed hose plugged Stop and raise drill with fan running. Hand-crank
meter and check for rows not delivering seed.
Hose disconnected or leaking Check hose path from front cart meter to row unit.
Check for leaks in hoses.
Seed tube plugged Check for debris and pest nests in tube.
Primary seed hoses are
plugging Fan speed too low Increase hydraulic flow to circuit.
Erratic fan speed Observe rpm reported by monitor, then check for oil
flow surging by tractor.
Flow not stopping when raised Have observer verify that meter gear rotation
ceases when drill is moving while raised.
Damaged hoses Inspect and repair as needed.
Sharp bends or too much slack in
hoses Re-route hoses for minimum necessary slack and
no sharp bends.
Secondary seed hoses
plugging Fan speed too low Increase hydraulic flow to circuit.
Damaged hoses Inspect and repair as needed.
Debris in seed or hoses Disconnect, inspect and clear.
Sharp bends or too much slack in
hoses Re-route hoses for minimum necessary slack and
no sharp bends.
Openers plugging Disks need adjustment See “Disk Blade Adjustments” on page 45.
Scrapers need adjustment See “Disk Scraper Adjustments” on page 46.
Conditions too damp Wait for drier weather.
Problem Cause Solution