Ordering by number: this is 3115141700, the Atlas Copco spring pin. It supplies the return force for its assembly in the rock drill. A spring that has taken a set gives soft or sticky action long before it actually breaks.
It appears on the BBC 34DSI Rock Drill and BBC 34W WS Pusher Leg Drill breakdown. Compare it to the reference callout on the diagram to be sure it is the position you need.
Everything else on that machine is one page away on the full diagram library; 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: 3115141700
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3115141700
- Listed on breakdowns for: BBC 34DSI Rock Drill, BBC 34W WS Pusher Leg Drill
