Fault Phenomenon: Caterpillar AP655D paver during operation, the left conveyor suddenly stops, accompanied by a loud noise.

Troubleshooting Process:
– Checked chain: drive chain broken.
– Checked for foreign objects: large rock lodged between conveyor and floor.
– Checked tension: chain too tight causing fatigue.
– Checked motor: hydraulic motor output normal.

Root Cause: A large aggregate got stuck in the conveyor trough, causing an instantaneous overload that snapped the chain.

Required Parts: Replace conveyor chain and repair damaged flight bars.