This is the Chicago Pneumatic O-Ring part number R137341, which also shows up as 3310103719, Crowder SKU CP-R137341. It keeps air or oil where it belongs inside the breaker. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
The published breakdown lists it on the CP 1230 1230S 1230SVR Paving Breaker and CP 1240 1240S 1240SVR Paving Breaker. Compare it to the reference callout on the diagram to be sure it is the position you need.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: R137341
- Also listed as: 3310103719
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R137341
- Listed on breakdowns for: CP 1230 1230S 1230SVR Paving Breaker, CP 1240 1240S 1240SVR Paving Breaker
