Throttle Valve Ass’y, American Pneumatic Tool part number 1280583533, which replaced the older number 03540, listed at Crowder Supply as APT3540. This is control gear it meters air to the rock drill. A worn control gives creep, hard starting, or a tool that will not shut off cleanly.
It is called out in the parts diagram for the 115 Rock Drill. That machine is the APT 115 Pneumatic Rock Drill if you are pricing a replacement rather than a repair. 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.
Everything else on that machine is one page away, and the parts diagram library indexes every breakdown we publish. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 1280583533
- Previous part number: 03540
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT3540
- Listed on breakdowns for: 115 Rock Drill
