Rexroth A4VSO180DR Axial Piston Pump 3600 rpm Cast Iron Hydraulic

A4VSO180DR/22R-VZB13N00 A4VSO180LR2G/22R-VPB25N00 A4VSO125EO2/22R-VPB13N00 A4VSO180DFR/22R-PPB13N00 A4VSO125EO2/22R-VZB13N00 Piston pump, Rexroth Germany variable high-pressure axial hydraulic pump

FAQ;

Maintenance & Troubleshooting

Q8: What does daily/regular maintenance involve?

• Keep the pump exterior clean from dust and oil污.

• Check oil levels before start-up and during operation.

• Listen for abnormal noises during operation, which may indicate internal issues like part wear or looseness.

• Regularly record operating parameters like pressure, flow, and temperature to monitor health.

• Change fluid filters periodically (e.g., every 1000 hours or as per conditions).

• Check and replace worn or aged seals.

• Follow lubrication requirements for various points.

• Inspect the coupling for looseness or wear.

Q9: The pump outputs insufficient flow or no flow at all. What could be wrong?

Primary reasons are:

• Insufficient Inflow: Caused by high suction line resistance, low oil level, excessive pump speed, or a clogged inlet strainer/suction line.

• Excessive Leakage: Worn internal parts (pistons, cylinder block, port plate) leading to high internal leakage.

• Swash Plate Angle: The swash plate angle might be set too small, minimizing displacement.

Q10: Why is there flow output when the control signal is at zero (neutral)?

This is often due to the control mechanism being off its neutral point. The cause can be a misadjusted, loose, or damaged controller. The solution is to re-zero, tighten, or replace the controller.

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