Fault Phenomenon: XCMG RP953 paver during operation, the screed tamper intensity weakens, pre-compaction is insufficient.

Troubleshooting Process:
– Checked hydraulic pump: tamper-specific pump flow insufficient.
– Checked motor: tamper motor internal leakage.
– Checked eccentric weights: mechanical key sheared/deformed.
– Checked oil temperature: high temperature causing viscosity drop.

Root Cause: Internal wear in the screed tamper hydraulic motor reduces volumetric efficiency, leading to decreased speed and torque.

Required Parts: Replace screed tamper motor.