Upper Valve Lid is the Chicago Pneumatic service part carried under part number P144140, which also shows up as 3310103534. Cycle timing runs through this component. Because it shuttles on every blow, it accumulates cycles faster than almost anything else in the chipping hammer.
The published breakdown lists it on the CP 4121 Chipping Hammer and CP 0017 SVR Chipping Hammer, and on 1 other machine. 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.
The full diagram library indexes every breakdown we publish, and the Chicago Pneumatic lineup has the tools these parts go into. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: P144140
- Also listed as: 3310103534
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P144140
- Listed on breakdowns for: CP 4121 Chipping Hammer, CP 0017 SVR Chipping Hammer, CP 4120 Chipping Hammer

