Spring, Chicago Pneumatic part number S017510, which also shows up as 3310103956, listed at Crowder Supply as CP-S017510. It loads its mating part against the seat. When free length drops, the symptom is inconsistent operation the tool works, but not crisply.
Crowder’s breakdowns list this part on the CP 0020 Sump Pump. Pull up the diagram and confirm the reference number for your serial before ordering.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Chicago Pneumatic tool range. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: S017510
- Also listed as: 3310103956
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-S017510
- Listed on breakdowns for: CP 0020 Sump Pump

