Liebherr Fault Code
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Free-Fall Inching Inoperative / Locked
System
Winch / Safety
Symptom
Free-Fall Inching Inoperative / Locked
Diagnosis & fix steps
LOGIC: Main Winch Controlled Free-Fall Clutch Pressure Transducer Drift.
ACTION: Install 0–100 bar mechanical gauge at free-fall clutch manifold. Cross-reference actual hydraulic release pressure against Litronic display reading at key-on (spec: 0.5V at 0 bar).
Red Seal field insights
Free-Fall Lockout: Prevents uncommanded tool drop; if transducer registers residual hydraulic pressure while brakes are commanded set, Litronic disables free-fall arming routines.
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