This is the Chicago Pneumatic governor spring part number C085372, cross-referenced to 3310103955, Crowder SKU CP-C085372. It loads its mating part against the seat. When free length drops, the symptom is inconsistent operation the tool works, but not crisply.
It appears on the CP 0020 Sump Pump breakdown. 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 breakdown index; complete tools are on the Chicago Pneumatic lineup. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: C085372
- Also listed as: 3310103955
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-C085372
- Listed on breakdowns for: CP 0020 Sump Pump

