Great Plains YP925TD Operator Manual - Manual (Page 79)

Great Plains Manufacturing, Inc. Table of Contents Index Troubleshooting 75
02/23/2011 Table of Contents Index 401-755M
Marker disk
does not
mark Disk angle too straight for soil
conditions Reverse marker disk to pull or throw dirt.
Speed
Reading
Doesn’t
Match
Tractor Monitor speed reading, using
optional radar, will only match tractor
with planter lowered.
(Speed reading with magnetic
pickup falls to zero when lifted.)
If speeds don’t agree during planting (with planter lowered),
re-calibrate radar speed sensor with planter lowered.
Dry Fertilizer Troubleshooting
Problem Cause Solution
No Fertilizer
Flow, All
Rows Hopper empty Check / refill hopper.
Chain missing at one or more
drive stages Check all five chains from ground drive to hoppers. See “Dry
Fertilizer Chains” on page 113.
No Fertilizer
Flow, Some
Rows Hopper plugged Clean out any material clogging discharge port. See “Dry
Fertilizer Clean-Out” on page 79.
Shaft disconnected Check couplers along final drive shaft.
No Fertilizer
Flow, One
Row Applicator tube plugged with soil Disconnect hose at top of applicator tube. Remove blockage
from below. Raise release height (page 46).
Applicator tube plugged with
fertilizer. Disconnect hose at top of applicator tube. Remove blockage
from below. Use finer grained fertilizer, or dry out the fertilizer
if coagulation is the problem.
Low Flow Incorrect Transmission sprockets Re-check Seed and Fertilizer Rate manual (401-754B).
Exchange DRIVING and DRIVEN sprockets as needed.
Field speed too high for
Transmission sprockets selected Apply at a lower speed, or use a new sprocket pair for the
actual rate and speed. Metering (kg per revolution) is lower at
high speeds.
Ground drive wheel slipping Check lowered tool bar height (page 17). Operate at a lower
field speed. Field conditions may be too wet for reliable meter
drive.
Meter flutes worn Inspect meter flutes (page 25). Replace as needed.
High Flow Incorrect Transmission sprockets Re-check Seed and Fertilizer Rate manual (401-754B).
Exchange DRIVING and DRIVEN sprockets as needed.
Field speed too low for
Transmission sprockets selected Apply at a higher speed, or use a new sprocket pair for the
actual rate and speed. Metering (kg per revolution) is higher
at low speeds.
Fertilizer on
Surface Release height too high Lower release height (page 46).
Coulter depth too shallow Increase coulter depth (page 45).
General Troubleshooting
Problem Cause Solution