This is American Pneumatic Tool part number 1280582608, previously 01633 throttle valve handle, stocked at Crowder Supply as APT1633. 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 138 Rock Drill and 155 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 on the parts diagram library; complete tools are on the American Pneumatic Tool range. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 1280582608
- Previous part number: 01633
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT1633
- Listed on breakdowns for: 138 Rock Drill, 155 Rock Drill
