This is Atlas Copco part number 0108136000 spring pin, stocked at Crowder Supply as AC-0108136000. 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 BBD 12T-01 TS-01 Rock Drill and RH 571-5L 571-5LS Rock Drill breakdown. Check it against the reference number on the diagram first; serial breaks change what fits.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram hub. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 0108136000
- Manufacturer: Atlas Copco
- Crowder SKU: AC-0108136000
- Listed on breakdowns for: BBD 12T-01 TS-01 Rock Drill, RH 571-5L 571-5LS Rock Drill

