Fault Phenomenon: Bomag BF600C paver a loud metallic impact sound occurs during screed tamping.

Troubleshooting Process:
– Checked bearing: tamper shaft support bearing cage collapsed.
– Checked lubrication: lubricating grease dried out.
– Checked load: prolonged high-load tamping.
– Checked mounting: bearing housing bolts loose.

Root Cause: The spherical roller bearing on the screed tamper shaft is damaged due to long-term lack of lubrication and high-frequency vibration, causing raceway spalling.

Required Parts: Replace tamper bearing and apply high-temperature grease.