Ordering by number: this is 1280582938, previously 17666, the American Pneumatic Tool cylinder bushing. It carries the piston and the port timing for the rock drill. Bore wear is gradual, so it is usually diagnosed by falling performance rather than a breakdown.
The published breakdown lists it on the 109 Mini Rock Drill. The complete machine is the APT 109 Pneumatic Rock Drill. 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 rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram library. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 1280582938
- Previous part number: 17666
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT17666
- Listed on breakdowns for: 109 Mini Rock Drill
