Fault Phenomenon: SANY SAP125C paver during operation, the screed tamper hydraulic hose suddenly bursts, oil sprays.

Troubleshooting Process:
– Checked hose: hose aged, cracked, or worn.
– Checked pressure: system pressure momentarily too high.
– Checked installation: hose twisted or rubbing against structure.
– Checked pulsation: tamper pulsation causing fatigue.

Root Cause: The high-pressure hose in the screed tamper circuit fatigued and burst due to long-term high-frequency pulsation and external friction, causing wall rupture.

Required Parts: Replace with high-pressure pulsation-resistant hydraulic hose.