Fault Phenomenon: XCMG XE370 excavator a periodic “clicking” metallic impact sound occurs during swing.

Troubleshooting Process:
– Checked ring gear: swing bearing ring gear has broken teeth or severe wear.
– Checked gear: swing gearbox output gear damaged.
– Checked clearance: excessive gear meshing clearance.
– Checked lubrication: lack of grease.

Root Cause: The swing bearing ring gear has localized broken teeth, causing impact noise when the swing gear meshes.

Required Parts: Replace swing bearing assembly.