Valve Chest Ass’y is the American Pneumatic Tool service part carried under part number 1280583081, listed as 02987 before the renumbering. 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.
The published breakdown lists it on the 115 Rock Drill. It comes off the APT 115 Pneumatic Rock Drill. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away, and the parts diagram library indexes every breakdown we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583081
- Previous part number: 02987
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT2987
- Listed on breakdowns for: 115 Rock Drill
