Fault Phenomenon: XCMG RP953 paver during operation, the hydraulic pump emits a high-pitched whine.

Troubleshooting Process:
– Checked oil level: hydraulic tank oil level too low.
– Checked suction filter: filter severely clogged.
– Checked lines: suction line fitting leaking air.
– Checked oil: low temperature causing high viscosity.

Root Cause: The hydraulic tank suction filter was not replaced for a long time and is clogged, causing excessive suction resistance and cavitation noise in the pump.

Required Parts: Replace suction filter and add hydraulic oil.