Muffler Ass’y is the Chicago Pneumatic service part carried under part number R132739. It silences the exhaust pulse. Once it clogs, the tool works against its own back pressure.
It appears on the CP 9RR 9RRS Rock Drill breakdown. Pull up the diagram and confirm the reference number for your serial before ordering.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram library. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: R132739
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R132739
- Listed on breakdowns for: CP 9RR 9RRS Rock Drill
