Valve Case Ass’y is the Chicago Pneumatic service part carried under part number P077013. This part controls the working cycle of the chipping hammer. When its faces wear, the tool sounds different and the blow rate falls off usually the first thing checked on a slow machine.
Crowder’s breakdowns list this part on the TEX 317 318 47 Chipping Hammer and TEX319 320 321 419 421 Chipping Hammer, and on 2 other machines. 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 breakdown index; complete tools are on the CP tool catalog. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: P077013
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-P077013
- Listed on breakdowns for: TEX 317 318 47 Chipping Hammer, TEX319 320 321 419 421 Chipping Hammer, CP 4132 4133 4134 4136 Chipping Hammer, CP 4123 Chipping Hammer

