Fault Phenomenon: Lonking 850 wheel loader excessive body shake and abnormal noise during articulated steering.

Troubleshooting Process:
– Checked pins: articulation pins worn thinner.
– Checked bushings: bushings severely worn or cracked.
– Checked lubrication: grease fittings clogged, lack of lubrication.
– Checked structure: lug holes worn and deformed.

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

Required Parts: Replace articulation pins and bushing assemblies, repair lug holes.