Ordering by number: this is 1280583749, which replaced the older number 02366, the American Pneumatic Tool cylinder Ass’y – main power. 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.
It appears on the 137 Rock Drill breakdown. That machine is the APT 137 Pneumatic Rock Drill if you are pricing a replacement rather than a repair.
Need the parts around it? They are on the same breakdown, and the full diagram library covers every machine we publish. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 1280583749
- Previous part number: 02366
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2366
- Listed on breakdowns for: 137 Rock Drill

