Ordering by number: this is 3371817131, the Atlas Copco torque limited spring. 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 LHD 23M Hydraulic Rock Drill and RDR 48M Rock Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts breakdown index. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3371817131
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371817131
- Listed on breakdowns for: LHD 23M Hydraulic Rock Drill, RDR 48M Rock Drill
