TM
Model 3700
M0275-01
1/16
6-5
Troubleshooting
SEED METER (BRUSH-TYPE)
PROBLEM
POSSIBLE CAUSE
SOLUTION
Low count.
Meter RPM too high.
Reduce planting speed.
Seed sensor not picking up all seeds
dropped.
Clean seed tube. Switch meter to different
row. If problem stays in same row, replace
sensor.
Lack of lubrication causing seeds not to
release from disc properly.
Use graphite or talc as recommended.
Seed size too large for seed disc being
used.
Switch to smaller seed or appropriate seed
disc. See “Brush-Type Seed Meter” for
proper seed disc for size of seed being used.
Seed treatment buildup in meter.
Reduce treatment amount used. Thoroughly
mix treatment with seed. Add talc.
Low count at low RPM and
higher count at higher RPM.
Foreign material lodged in upper brush.
Remove seed disc and remove
foreign material from between brush retainer
and bristles. Clean thoroughly.
Worn upper brush.
Replace. See “Brush-Type Seed Meter
Maintenance”.
Low count at higher RPM and
normal count at low RPM.
Seed disc worn in agitation groove area.
Replace disc. Replace. See “Brush-Type
Seed Meter Maintenance”.
High count.
Seed size too small for seed disc.
Switch to larger or appropriate seed disc.
Incorrect seed rate transmission setting.
Reset transmission. Refer to rate charts.
Upper brush too wide (fanned out) for
small seed size.
Replace upper brush.
High count. (Milo/Grain
Sorghum)
Incorrect brush retainer being used.
Make sure GD8237 brush retainer is used to
keep upper brush from fanning out.
Upper brush laid back.
Seed treatment buildup on brush.
Remove brush. Wash with soap and water.
Dry thoroughly before reinstalling.
Foreign material buildup at base of brush. Remove brush retainer and brush. Clean
thoroughly. Reinstall.
SOLENOID VALVE
PROBLEM
POSSIBLE CAUSE
SOLUTION
No solenoids operate.
Low voltage.
Must be connected to 12 volt DC only.
Negative ground.
Blown fuse.
Replace control console fuse with AGC-15 amp.
Battery connection.
Clean and tighten.
Wiring harness damaged.
Repair or replace.
One solenoid valve will not
operate.
Bad switch.
Replace on control panel.
Cut wire in harness.
Locate and repair.
Bad coil.
Replace.
Poor connection at coil.
Check.
Valve operating when not
energized.
Valve stem stuck open.
Replace cartridge.
O-ring leaking.
Install new O-ring kit.
Foreign material under poppet.
Remove and clean cartridge.
Summary of Contents for 3700
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