Grain loss
Excessive tailings
Possible Cause Correction
Insufficient sieve opening.
Increase sieve opening in 0.06”(1.6
mm) increments.
Insufficient air blast from cleaningfan. Increase fan choke setting.
Chaffer opening too wide.
Consider increasing air, then decrease
chaffer opening in 0.06” (1.6 mm)
increments.
Cleaning shoe overloaded due toover
threshing.
Refer to remedies listedunder
MATERIAL LODGING OUTSIDE OF
CAGE (PG.
20) condition.
Grain loss over cleaning shoe
Possible Cause Correction
Engine not up to correctspeed.
Adjust engine high idle toproper
speed.
Separator drive belt, fan drive beltor
cleaning shoe drive beltslipping.
Inspect drives, replace any damaged
belts as required and adjustidlers.
Plugged fan inlet screen. Clean screen.
Uneven feed to cylinder.
Refer to section on UNEVEN or
BUNCHED FEEDING (PG. 16).
Insufficient material entering cylinder.
Increase ground speed for moreintake
of material.
Material plugging fan choke and/orfan.
Clean fan choke and fan. Be surefan
inlet screens areinstalled.
Insufficient chaffer opening.
Increase chaffer opening in 0.06”(1.6
mm) increments.
Incorrect fan choke setting.
Grain loss can be caused by too little or
too much airvolume.
If grain and material is falling off rear
edge of chaffer in piles or bunches, air
volume is too low and fan chokesetting
should be increased.
If grain is being blow out and can be
caught approximately 12” (30.5 mm)
behind end of chaffer, fan chokesetting
should be decreased.
Harvesting in damp freezingweather.
Improper distribution of materialon
cleaning shoe - excessivetailings.
Wait for suitable harvest conditions.
Refer to EXCESSIVE TAILINGS
(ABOVE)
condition section.
Cleaning shoe overloaded due toover
threshing.
Refer to remedies listedunder
MATERIAL LODGING OUTSIDE OF
CAGE (PG.
20) condition. Adjust separator grateto
#9 condition.
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