Pressure Spring, Atlas Copco part number 3121002000, listed at Crowder Supply as AC-3121002000. It loads its mating part against the seat. When free length drops, the symptom is inconsistent operation the tool works, but not crisply.
The published breakdown lists it on the BBD 46 WS/WR Rock Drill and BBD 94W 94WS 94WE Rock Drill. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
Everything else on that machine is one page away on the parts breakdown index; complete tools are on the Atlas Copco catalog. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121002000
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121002000
- Listed on breakdowns for: BBD 46 WS/WR Rock Drill, BBD 94W 94WS 94WE Rock Drill
