McConnel 1300 - Troubleshooting Chart; Problem Diagnosis and Remedies

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TROUBLESHOOTING CHART
Problem
Possible Cause
Suggested Remedy
Rotor will not turn.
Low oil pressure.
Foreign object jamming rotor.
Drive belt broken or slipping.
Faulty rotor bearing.
Internal pump or motor damage.
Check oil pressure.
Manually unblock the rotor.
Check and replace or adjust.
Replace bearing(s).
Repair or replace if required.
Unusual noise.
Damaged or missing flails.
Worn flails.
Check and replace flails.
Fit new flails & fixings.
Excessive vibration.
Mud and/or debris on rotor.
Damaged or missing flails.
Unbalanced or damaged rotor.
Remove debris, clean rotor.
Check and replace flails.
Balance or replace rotor.
Poor or uneven cutting.
Flails / teeth excessively worn
Replace flails / teeth.
Oil leakage.
Seals / hoses worn or damaged.
Replace seals / hoses.