Ordering by number: this is C085378, which also shows up as 3310103485, the Chicago Pneumatic oiler valve. This part controls the working cycle of the pump. When its faces wear, the tool sounds different and the blow rate falls off usually the first thing checked on a slow machine.
You will find it on the diagram for the CP 0020 Sump Pump. 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.
Everything else on that machine is one page away on the full diagram library; 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: C085378
- Also listed as: 3310103485
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-C085378
- Listed on breakdowns for: CP 0020 Sump Pump
