How to Tell if Hyundai Excavator Main Pump Needs A8VO160 Parts Replacement?

1. Common Failure Symptoms

• Low Pressure Output
  Weak hydraulic response or delayed movement, especially under load or swing.

• Overheating Hydraulic Oil
  Excessive oil temperature points to internal leakage or friction.

• Abnormal Noise from Pump
  Screeching, clanking, or whining sound may indicate worn pistons or cylinder block.

• Intermittent Hydraulic Operation
  Lagging or jerky operation could stem from faulty valve plates or control pistons.

• Metal Debris in Hydraulic Oil
  Presence of metal particles during inspection is a key sign of internal wear.

2. Key Parts to Inspect & Replace

3. When to Replace?

• Operating hours > 4000–6000h

• Metal detected in oil samples

• Visible performance drop or abnormal system behavior