OMHXE51478

Separator

Symptom	Problem	Solution
Slugging or Overloading of Separator.	Single tine separator variable drive belt is slipping at slow speed.	Adjust sheave gap.
	Separator speed too slow for crop.	Increase separator speed.

Backfeeding of Feed Accelerator.	Separator speed too slow for crop.	Increase separator speed.
	Accelerator speed in slow speed position.	Change accelerator speed to high speed position.

Grain Not Threshed.	Separator speed too slow for crop.	Increase separator speed in increments of 50-100 rpm. After separator speed adjustment check grain quality.
	Concave clearance too wide.	Tighten threshing clearance in increments of 5-10 mm. After threshing clearance adjustment check grain quality.
	Concave clearance not even from front to rear.	Adjust to specifications. See Concave Leveling in Separator section. for further information.
	Not enough material entering combine for proper threshing.	Increase ground speed.

Too Much Cracked Grain in Tank.	Separator speed too fast for crop.	Decrease separator speed in increments of 10 rpm.
	Concave clearance too tight.	Open threshing clearance in 2 mm increments.
	Feed beater speed too fast for crop.	Decrease feed accelerator speed by switching to low speed.
	Excessive grain in tailings.	Open sieve in increments of 2 mm to reduce tailings.
	Not enough material entering machine.	Increase ground speed.
	Active tailings system (if equipped) concave position incorrectly set.	Set active tailings system concave position. See Crop Settings section for further information.

Separator Grain Loss

Separator overloaded due to incomplete threshing or late threshing at concave.

Reduce separator to concave spacing and/or increase separator speed to increase threshing action.

Separator covers installed.

See Crop Settings section for further information.

Remove covers to increase open area while maintaining even shoe loading.

Separator top cover vanes (if equipped) are in the advanced position.

Move vanes to standard position. See CommandCenter Display Screen section for further information.

Dirty Grain Tank (Unthreshed Heads).

Separator not threshing enough.

Increase separator speed in increments of 50-100 rpm.

Decrease threshing clearance in increments of 2 mm.

Check concave level. See Concave Leveling in Separator section for further information.

Active tailings system machines: install concave covers in first concave.

Non active tailings system machines: install concave covers in second concave.

Add concave interrupters to first concave.

Active tailings system (if equipped) concave position incorrectly set.

Verify that active tailings system concave position is correct for crop harvested.

Check active tailings system concave position for correct zero position. See Tailings System Wear Strips and Rasp Bars—Adjusting in Separator section for further information.

Dirty Grain Tank (Mostly Chaff).	Fan speed too slow.	Increase fan speed.
	Residue system crop diverter door in incorrect position.	Verify that door position matches harvested crop.

Dirty Grain Tank (Small Pieces of Cob).

Broken cob pieces in grain tank.

NOTE: Spacers should be used in corn and soybeans only. Remove spacers for all other crops.

Install separator grate spacers.

Check threshing clearance. If clearance is less than bare cob diameter rotor may break up cob.

NOTE: For active tailings system machine spacers should not be installed in fourth grate.

Install separator grate spacers.

Damaged chaffer/sieve elements.

Crop diverter door in incorrect position.

Verify that door position matches harvested crop.

Loss of Grain Over Cleaning Shoe.	Incorrect chaffer/sieve clearance.	Check and calibrate chaffer/sieve clearance.
	Incorrect distribution of chaff/grain on cleaning shoe.	Adjust separator grate blanks and auger bed dividers as required. See Power Shutdown Procedure in Crop Settings section for more information.

VisionTrak Performance Monitor not reading.

Cleaning shoe loss increases at low feedrate.

Reduce fan speed.

Cleaning shoe loss increases at high feedrate.

Open chaffer.

Increase fan speed.

Sensor not reading.

Check crop sensitivity settings.

Check that sensors are connected.

Check that sensors are not block by material.

Undesirable Straw Quality.

Excessive material handling.

Decrease rotor speed and increase threshing clearance to increase straw quality and balance threshing performance.

Decrease material handling speed (feeder house and feed accelerator) to balance straw quality and material handling performance.

Advance separator top cover vanes (if equipped). See CommandCenter Display Screen section for further information.

OUO6075,0000B6A-19-20110407