This is Chicago Pneumatic part number C113785, also listed as 3310103518 retainer spacer, stocked at Crowder Supply as CP-C113785. This part keeps the steel captive in the pump under repeated impact, so it is inspected at every steel change and replaced on condition rather than on a schedule.
It shows up in the parts breakdown for the CP 0010 Centrifugal 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 full diagram library; complete tools are on the Chicago Pneumatic lineup. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: C113785
- Also listed as: 3310103518
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-C113785
- Listed on breakdowns for: CP 0010 Centrifugal Pump

