Fault Phenomenon: Bomag BF800C paver after one hour of operation, hydraulic oil temperature exceeds 90°C, machine lacks power.

Troubleshooting Process:
– Checked cooler: air-cooled cooler clogged.
– Checked fan: fan motor speed low.
– Checked relief valve: system in relief state for extended period.
– Checked oil: incorrect oil viscosity.

Root Cause: The surface of the hydraulic oil air-cooled radiator is completely covered with dust and oil sludge, resulting in almost zero cooling efficiency.

Required Parts: Clean radiator with compressed air or steam.