Feed Conveyor
Feeder chains plugging or wrapping
Possible Cause Correction
Uneven feed from header.
Refer to previous section on HEADER or
CONVEYOR PLUGGING (PG. 15) condition
for header performance checks.
Improper feed chain speed.
Check feed chain drive sheave
installation with grain header belts
driving off larger sheave diameter. With
corn header, belts driving off smaller
sheave diameter.
Feeder chain drum stops set too low. Adjust feeder drum stops.
Dirt between front and rear feed chains. Clean out dirt.
Front feeder chain drive slip clutch set
too loose.
Check clutch assembly for worn or
broken parts.
Worn or damaged cylinder bars. Replace thresher cylinder bars.
Concave clearance too wide.
Reduce concave clearance and then
speed if cracking occurs.
Feeder chain slats bowed or missing.
Straighten or replace bent or missing
slats.
Material entering into the outer ends of
front chain slats.
Adjust straw retarders toward center of
header, then install fairing extensions.
Front feeder chains plugging in extreme conditions
Possible Cause Correction
Front feed chain grabbing crop, but not
releasing to the rear feed chain.
Remove every other center slat.
Too much material entering combine
Possible Cause Correction
Cutting too low in order to get all down
and tangled crops.
Use lifting guards or pickup reel in
down and tangled conditions.
Uneven or bunched feeding of crop to cylinder
Possible Cause Correction
Uneven feed to cylinder.
Refer to previous listed feeding
problems.
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