Fault Phenomenon: Bomag BF800C paver the right-side auger suddenly stops turning, drive shaft broken.

Troubleshooting Process:
– Checked fracture surface: fatigue fracture characteristics.
– Checked for foreign objects: hard object jammed auger.
– Checked material: heat treatment defect in shaft material.
– Checked alignment: motor and shaft misaligned.

Root Cause: A large rock got lodged between the auger and its shield, causing instantaneous torque exceeding the shaft’s ultimate strength, resulting in torsional breakage.

Required Parts: Replace auger drive shaft and remove foreign object.