This is Chicago Pneumatic part number P144138, also listed as 3310190256 throttle valve bushing, stocked at Crowder Supply as CP-P144138. This is control gear it meters air to the chipping hammer. A worn control gives creep, hard starting, or a tool that will not shut off cleanly.
The published breakdown lists it on the CP 4120 Chipping Hammer. 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. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: P144138
- Also listed as: 3310190256
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P144138
- Listed on breakdowns for: CP 4120 Chipping Hammer
