Fault Phenomenon: Bomag BF600C paver a metallic impact sound occurs when the screed reaches the top of its lift.

Troubleshooting Process:
– Disassemble cylinder: internal cushion polyurethane pad shattered.
– Checked operation: frequently moving screed to limit quickly.
– Checked oil temperature: high temperature accelerated rubber aging.
– Checked piston: piston hitting cylinder bottom.

Root Cause: The cushion pad inside the screed lift cylinder shattered due to long-term impact and high-temperature aging, losing its cushioning effect.

Required Parts: Screed lift cylinder seal and cushion pad repair kit.