Ordering by number: this is R145785 (also carried as 3310190063), the Chicago Pneumatic lower valve lid. Cycle timing runs through this component. Because it shuttles on every blow, it accumulates cycles faster than almost anything else in the breaker.
It appears on the CP 1230 1230S 1230SVR Paving Breaker breakdown. Compare it to the reference callout on the diagram to be sure it is the position you need.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Chicago Pneumatic tool range. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: R145785
- Also listed as: 3310190063
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R145785
- Listed on breakdowns for: CP 1230 1230S 1230SVR Paving Breaker
