Fault Phenomenon: Dynapac F300W paver while running, instrument shows battery discharge, water temperature rises.

Troubleshooting Process:
– Checked belt: generator/water pump common belt broken.
– Checked tensioner: tensioner pulley seized, causing belt break.
– Checked alignment: pulleys not aligned.
– Checked quality: belt aged.

Root Cause: The generator tensioner pulley bearing seized, creating excessive resistance that snapped the belt, causing the generator to stop charging and the water pump to stop circulating.

Required Parts: Replace belt and tensioner pulley assembly.