Fault Phenomenon: Dynapac F1800C paver operating the hydraulic screed extension, one side moves slowly or seizes.

Troubleshooting Process:
– Checked guide rails: extension guide rails deformed or lack lubrication.
– Checked cylinder: extension cylinder internal leakage or bent.
– Checked wear pads: wear pads worn or shattered.
– Checked for foreign objects: asphalt mix stuck between guide rails.

Root Cause: Hardened asphalt mix got lodged between the screed extension guide rails, hindering sliding movement.

Required Parts: Clean guide rails and apply high-temperature grease.