Fault Phenomenon: Sinoboom GTJZ18 scissor lift aerial work platform while driving, a wheel wobbles, risk of falling off.

Troubleshooting Process:
– Checked nuts: nuts loose.
– Checked torque: not tightened to specified torque.
– Checked washers: washers failed.
– Checked wheel rim: rim deformed.

Root Cause: The wheel lug nuts were not inspected and tightened on schedule, causing looseness due to vibration.

Required Parts: High-strength nuts and retightening.