Fault Phenomenon: Konecranes heavy forklift when rotating the spreader, the gearbox makes a loud abnormal noise, rotation is jerky.

Troubleshooting Process:
– Checked gear oil: metal shavings in oil.
– Checked gears: gears have broken teeth.
– Checked bearings: bearing cage collapsed.
– Checked lubrication: poor lubrication.

Root Cause: The rotation gearbox has broken gear teeth or damaged bearings.

Required Parts: Rotation gearbox assembly.