A10VSO180DG/32L-VPB22U00 A10VSO180DRF/32L-VPB22U00 A10VSO180DG/32L-VPB32U00 German Rexroth mechanical variable displacement piston pump imported with original packaging

No-flow or low-flow issues are typically related to suction, drive, or control problems. Troubleshoot in this order:

Pressure fluctuations (±10 bar or more) disrupt system performance. Common causes and fixes:

• Unstable Control Signal (Electro-Hydraulic Models): Cause: Electromagnetic interference (EMI) or faulty sensor. Solution: Install EMI filter on the control signal line; ground the pump and controller; replace faulty sensor.
• Worn Pressure Compensator Valve: Cause: Valve seat wear or spring fatigue leads to inconsistent pressure regulation. Solution: Replace pressure compensator valve; recalibrate pressure setpoint.
• Air in the System: Cause: Air bubbles compress and expand, causing pressure spikes. Solution: Bleed the system thoroughly; check for suction line leaks.
• Oversized System Volume: Cause: Large hydraulic accumulators or oversized lines delay pressure response. Solution: Adjust accumulator precharge pressure; install a pressure dampener near the pump.