This is American Pneumatic Tool part number 1280583464, listed as 02116 before the renumbering water needle valve, stocked at Crowder Supply as APT2116. It directs the flow that reverses the piston in the rock drill. Valve wear changes port timing, and the machine loses blow rate before it loses the ability to run.
It appears on the 138 Rock Drill and 155 Rock Drill, and on 1 other machine breakdown. The tool itself is the APT 137 Pneumatic Rock Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
Everything else on that machine is one page away, and the full diagram library indexes every breakdown we publish. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 1280583464
- Previous part number: 02116
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2116
- Listed on breakdowns for: 138 Rock Drill, 155 Rock Drill, 137 Rock Drill
