This is the Chicago Pneumatic lock off trigger part number R157955, also listed as 3310103650, Crowder SKU CP-R157955. It governs how air reaches the working end of the chipping hammer. Wear on the sealing land is the usual cause of a throttle that leaks with the trigger released.
It appears on the CP 4130 Chipping Hammer and CP 4131 Chipping Hammer, and on 1 other machine breakdown. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away on the parts breakdown index; complete tools are on the Chicago Pneumatic lineup. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: R157955
- Also listed as: 3310103650
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R157955
- Listed on breakdowns for: CP 4130 Chipping Hammer, CP 4131 Chipping Hammer, CP 0016 Chipping Hammer
