Fault Phenomenon: Ruthmann T360 telescopic boom aerial work platform when rotating, there is abnormal noise and play between the turntable and chassis.

Troubleshooting Process:
– Checked bolts: bolts loose or broken.
– Checked washers: washers failed.
– Checked threads: threads stripped.
– Checked preload: insufficient preload.

Root Cause: The swing bearing connecting bolts were not tightened to the specified torque, causing looseness.

Required Parts: High-strength bolts and retightening.