Piston is the Chicago Pneumatic service part carried under part number P114386, also listed as 3310190042. It is the working heart of the chipping hammer. Pistons are matched to the cylinder bore, so replacing a worn one usually means checking the bore at the same time.
It is called out in the parts diagram for the CP 4120 Chipping Hammer and CP 4121 Chipping Hammer. Compare it to the reference callout on the diagram to be sure it is the position you need.
Use the full diagram library to work through the rest of the assembly, or the CP tool catalog if you are pricing a replacement machine. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: P114386
- Also listed as: 3310190042
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P114386
- Listed on breakdowns for: CP 4120 Chipping Hammer, CP 4121 Chipping Hammer
