The lowering speed is too low, especially with an unloaded manipulator. Or: The manipulator cannot be lowered

Cause 1: The load-holding valve setting has been disturbed.             

  • Adjust the load-holding valve, see chapter “7 Adjustment instructions” – Adjustment instructions for hydraulic valves.

Cause 2: The pressure-relief valve (P3) for the lowering pressure has been disturbed.

  • Pollution in the valve may have caused the leakage.
  • Adjust the pressure relief valve for lowering pressure, see chapter “7 Adjustment instructions” – Adjustment instructions for hydraulic valves. If this does not help, clean the valve or replace with a new one.

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