Throttle Valve is the American Pneumatic Tool service part carried under part number 1280582607, which replaced the older number 01632. It governs how air reaches the working end of the rock drill. Wear on the sealing land is the usual cause of a throttle that leaks with the trigger released.
Crowder’s breakdowns list this part on the 138 Rock Drill and 155 Rock Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the parts diagram hub. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280582607
- Previous part number: 01632
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT1632
- Listed on breakdowns for: 138 Rock Drill, 155 Rock Drill
