Liebherr Fault Code
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Kelly Winch Hoist Speed Capped
System
Mast / Winch
Symptom
Kelly Winch Hoist Speed Capped
Diagnosis & fix steps
LOGIC: Main Winch Rope End Limit Inductive Sensor Implausible.
ACTION: Inspect proximity sensor target air gap at the winch drum perimeter. Clean metal wear dust off the magnetic face and test sensor switching states using Litronic diagnostics.
Red Seal field insights
Layer Guard: The machine controller must track remaining drum wraps; an implausible sensor signal forces slow winch speeds to prevent cable runout off the drum.
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