This is the Atlas Copco spring part number 3378512030, Crowder SKU AC-3378512030. Springs in a drill fatigue with cycle count rather than age, so a control that has gone lazy or fails to return is usually this part rather than the component it drives.
Crowder’s breakdowns list this part on the LCD 500 & LCD 1500 Hydraulic Core Drill and COR 5/15 Hydraulic Core Drill, and on 1 other machine. Pull up the diagram and confirm the reference number for your serial before ordering.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram hub. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3378512030
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3378512030
- Listed on breakdowns for: LCD 500 & LCD 1500 Hydraulic Core Drill, COR 5/15 Hydraulic Core Drill, MHC5 Hydraulic Core Drill
