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Excessive noise and vibration
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Mower-conditioner incorrectly attached to tractor.
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Attach mower-conditioner correctly. (See ATTACHING AND DETACHING section.)
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Loose hardware.
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Check tightness of hardware.
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Impeller tines missing.
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Replace missing tines.
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Excessive vibration in turns
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Driveline out of alignment.
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Align driveline. (See
ALIGNING DRIVELINE
in the SERVICE section.)
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Damaged leaves and broken stems
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Excessive rotor speed.
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Reduce rotor speed. (See Changing Impeller Rotor Speed in Operating the Mower-Conditioner section.)
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Conditioning hood too close to rotor.
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Reposition conditioning hood. (See Adjusting Conditioning Intensity in Operating the Mower-Conditioner section.)
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| Symptom |
Problem |
Solution |
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Cutterbar plugging
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Crop plugging at the end of cutterbar.
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Install converging end disk. (See your John Deere dealer.)
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Wet ground conditions causing plugging.
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Increase cutting height by reducing platform angle. (See Adjusting Cut Height-Turnbuckle Top Link or Hydraulic Tilt Control in Operating the Mower-Conditioner section.)
Adjust gauge shoes. (See Adjusting Gauge Shoes in Operating the Mower-Conditioner section.)
Reduce platform float. (See Adjusting Platform Float in Operating the Mower-Conditioner section.)
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Excessive slippage of slip clutch.
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Check slip clutch adjustment. (See Adjusting Slip Clutch in Service section.)
Reduce ground speed.
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Bent or broken knives.
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Replace knives. (See Removing Knives and Installing Knives in the Service section.)
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| Symptom |
Problem |
Solution |
|
Ragged cut
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Incorrect platform float spring adjustment.
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Adjust float springs. (See Adjusting Platform Float in Operating the Mower-Conditioner section.)
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Incorrect cutterbar angle.
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Change cutterbar angle (tilt down). (See Adjusting Cut Height-Turnbuckle Top Link or Hydraulic Tilt Control in Operating the Mower-Conditioner section.)
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Dull knives.
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Reverse or replace knives. (See Removing Knives and Installing Knives in the Service section.)
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Knives incorrectly installed.
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Install knives correctly. (See procedure in the Service section.)
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Excessive ground speed.
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Reduce ground speed.
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Slow rotor speed
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Increase rotor speed. (See Changing Impeller Rotor Speed in Operating the Mower-Conditioner section.)
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Incorrect cutting height.
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Adjust gauge shoes. (See Adjusting Gauge Shoes in Operating the Mower-Conditioner section.)
Change cutterbar angle. (See Adjusting Cut Height-Turnbuckle Top Link or Hydraulic Tilt Control in Operating the Mower-Conditioner section.)
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Down or lodged crop.
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Tilt cutterbar down. (See Adjusting Cut Height-Turnbuckle Top Link or Hydraulic Tilt Control in Operating the Mower-Conditioner section.)
Raise carrier frame. (See Adjusting Carrier Frame Height in Operating the Mower-Conditioner section.)
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| Symptom |
Problem |
Solution |
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Frequent breakage of knives
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Cutterbar set too low.
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Raise cutterbar or adjust gauge shoes. (See Adjusting Cut Height-Turnbuckle Top Link or Hydraulic Tilt Control in Operating the Mower-Conditioner section.)
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Incorrect platform float spring adjustment.
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Adjust float springs (decrease weight). (See Adjusting Platform Float in Operating the Mower-Conditioner section.)
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Excessive ground speed.
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Reduce ground speed.
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Incorrect knife mounting.
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Check knife bolts and nuts. (See Checking Knife Bolts and Checking Knife Nuts in Service section.)
Check knives. Make sure knives rotate freely on bolts. (See Checking Knife Wear and Installing Knives in Service section.)
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Poorly formed or bunchy windrows
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Swathboard and tuck shields not adjusted.
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Adjust. (See Adjusting Windrow Width in Operating the Mower-Conditioner section.)
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Incorrect PTO speed.
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Correct PTO speed.
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Ground speed too low.
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Increase ground speed.
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Slow rotor speed
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Increase rotor speed. (See Changing Impeller Rotor Speed in Operating the Mower-Conditioner section.)
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Conditioning hood too far away from rotor.
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Reposition conditioning hood.
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| Symptom |
Problem |
Solution |
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Strips of uncut material left on field.
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Broken or excessively worn knives.
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Replace knives. (See Removing Knives and Installing Knives in Service section.)
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Mud or foreign objects on cutterbar.
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Disengage tractor PTO and stop engine. When all moving parts are completely stopped, remove mud or foreign objects.
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Incorrect platform float spring adjustment.
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Adjust float springs. (See Adjusting Platform Float in Operating the Mower-Conditioner section.)
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Strips of uncut material passing between diverging disks
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Turn or replace knives before end is worn to halfway point. (See Removing Knives and Installing Knives in Service section.)
Increase ground speed.
Remove gauge shoes. (See procedure in Service section.)
Decrease cutting height and increase cutting angle. (See Adjusting Cut Height-Turnbuckle Top Link or Hydraulic Tilt Control in Operating the Mower-Conditioner section.)
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Strips of uncut material passing between converging disks.
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Decrease platform weight. (See Adjusting Platform Float in Operating the Mower-Conditioner section.)
Clean or replace wear plates between disks.
Check knife wear. (See procedure in Service section.)
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| Symptom |
Problem |
Solution |
|
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Mud buildup under cutterbar.
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Remove mud buildup and adjust platform guard angle for flatter angle. (See Adjusting Cut Height-Turnbuckle Top Link or Hydraulic Tilt Control in Operating the Mower-Conditioner section.)
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Disk driver sheared. Disk not driven at full speed.
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Replace disk driver. (See procedure in service section.)
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Excessive power required at the PTO
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Incorrect setting of slip clutch.
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Adjust slip clutch. (See procedure in Service section.)
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PTO failure
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Slip clutch set incorrectly.
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Adjust slip clutch. (See Adjusting Slip Clutch in Service section.)
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High horsepower tractor operating a machine equipped with 540 rpm.
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Convert machine to 1000 rpm. (See your John Deere dealer.)
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V-Belt breakage
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Incorrect belt tension.
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Adjust belt tension. (See Adjusting Cutterbar Drive Belt Tension in Service section.)
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Crop wrapping on impeller.
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Impeller running too slow.
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Operate impeller in high speed. (See Changing Rotor Speed in Operating the Mower-Conditioner section.)
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Ground speed too slow.
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Increase ground speed.
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Machine vibration
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Tractor driveline not running level.
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Reposition mower-conditioner hitch. (See Adjusting Mower-conditioner Hitch in Preparing the Mower-Conditioner section.)
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Machine will not raise off left-hand side lock channel
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Right-hand cylinder fully extended (not on lock channel) but left-hand side cylinder not moving.
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Rephase cylinders. (See Bleeding Platform Lift Circuit in Service section.)
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