Fault Phenomenon: Volvo EC360 excavator bucket wobbles significantly, abnormal noise at pin points.

Troubleshooting Process:
– Checked pins: pins worn thinner.
– Checked bushings: linkage bushings severely worn.
– Checked lubrication: grease fittings clogged, lack of lubrication.
– Checked clearance: excessive fit clearance.

Root Cause: The bucket linkage pins and bushings were dry-worn due to long-term lack of lubrication, causing excessive clearance.

Required Parts: Replace pins and bushing assemblies.