This is the Chicago Pneumatic front valve seat part number R085898 (also carried as 3310103535), Crowder SKU CP-R085898. Cycle timing runs through this component. Because it shuttles on every blow, it accumulates cycles faster than almost anything else in the rock drill.
The published breakdown lists it on the CP 9A 9F Rock Drill and CP 0009 A F E CS ES AC Rock Drill, and on 2 other machines. Check it against the reference number on the diagram first; serial breaks change what fits.
The full diagram library indexes every breakdown we publish, and the CP tool catalog 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: R085898
- Also listed as: 3310103535
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R085898
- Listed on breakdowns for: CP 9A 9F Rock Drill, CP 0009 A F E CS ES AC Rock Drill, CP 9RR 9RRS Rock Drill, CP 9 9S Rock Drill
