Liebherr Fault Code
Free · no signup0x021B
Rotary Drive BAT 300 No High-Speed
System
Hydraulics
Symptom
Rotary Drive BAT 300 No High-Speed
Diagnosis & fix steps
LOGIC: Rotary Drive Dual-Displacement Shift Solenoid Open Circuit.
ACTION: Measure displacement shift solenoid coil resistance on the top-drive hydraulic manifold (~24Ω). Inspect umbilical cable track running along the vertical leader mast for pulled pins.
Red Seal field insights
Two-Speed Physics: Shifts hydraulic bent-axis motors between max displacement (high torque for drilling) and min displacement (high speed for spin-off); open coils lock it in low speed.
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