Liebherr Fault Code
Free · no signup0x028A
Main Shovel Digging Force Weak
System
Hydraulics
Symptom
Main Shovel Digging Force Weak
Diagnosis & fix steps
LOGIC: Main Working Pump Swashplate Angle Feedback Deviation.
ACTION: Inspect dual rotary angle position transducers mounted on the main Rexroth A4VSO pump heads. Check 24V power supply and recalibrate swashplate zero/span via Litronic.
Red Seal field insights
Closed-Loop Displacement: Prevents hydraulic pump cavitation or over-stroking by ensuring physical pump displacement precisely tracks operator demand and engine torque curves.
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