Air System

Symptom Problem Solution

Plugging in separation duct.

Green bolls accumulating on lower door.

Open lower door.

Trash accumulating on lower panel.

Tip back of lower panel down to shed trash.

Insufficient vacuum to lift heavy cotton.

Close lower door to increase vacuum.

Fan inspection door loose or missing.

Replace fan inspection door.

Improper fan belt tension.

Tighten fan belt to correct tension.

Cross auger slowing or stalling.

Remove foreign material from cross auger.

Cross auger paddle timing.

Time paddles. (See Installing Cross Auger Extension(s) in STRIPPING UNITS section.)

Plugging in finger grates.

Grates bent.

Straighten grates so they are parallel to eliminate pinch points.

Grates are rusty.

Operate at slow speeds until grates are shined.

Grate panels are out of adjustment.

Adjust grates. (See Adjusting Upper and Lower Grates in CLEANER section.)

Lower panel too high.

Lower slide panel.

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Symptom Problem Solution

Poor distribution of cotton across finger grates.

Nozzle tabs out of adjustment.

Adjust tabs. (See Nozzle Tab Setting in AIR SYSTEM section.)

Vanes improperly adjusted.

Adjust vanes. (See Separation Dust Settings in AIR SYSTEM section.)

Curl on front of nozzle duct not tight against wall of nozzle or duct.

Remove nozzle. Adjust bottom curl so it is tight against nozzle wall. Adjust top curl so it is tight against back wall of duct.

Foreign material lodged in discharge duct.

Remove foreign material.

Cotton escaping through finger grates.

Bent or broken fingers.

Straighten or replace fingers.

Green bolls in cleaner.

Too much vacuum in separation duct.

Open lower door.

Light green bolls.

Move separation duct top panel down.

Green boll chute too low.

Raise green boll chute.

Fan vibration.

Dirt on rotor.

Clean rotor.

Bearing out.

See your John Deere Dealer.

Worn belt.

Replace fan drive belt.

Loose hardware on fan supports.

Tighten hardware.

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