This is Chicago Pneumatic part number R147615, cross-referenced to 3310103761 spring, stocked at Crowder Supply as CP-R147615. It loads its mating part against the seat. When free length drops, the symptom is inconsistent operation the tool works, but not crisply.
It is called out in the parts diagram for the CP 0066 Concrete Scabbler. It comes off the CP 0066 Non Sparking Scabbler. 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.
Work through the rest of the assembly on the same breakdown, or start over from the parts diagram hub. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: R147615
- Also listed as: 3310103761
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R147615
- Listed on breakdowns for: CP 0066 Concrete Scabbler

