Spring carries Atlas Copco part number 3121033800 and is stocked here under AC-3121033800. Springs in a rock 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 RH 658L/LS/LS-01 Rock Drill. The complete machine is the RH 658 L Surface Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away, and the parts diagram library indexes every breakdown we publish. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3121033800
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121033800
- Listed on breakdowns for: RH 658L/LS/LS-01 Rock Drill

