This is Atlas Copco part number 3115057300 throttle lever, stocked at Crowder Supply as AC-3115057300. 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 RH 658L/LS/LS-01 Rock Drill and RH 656W Rock Drill. That machine is the RH 658 L Surface 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.
Work through the rest of the assembly on the same breakdown, or start over from the parts breakdown index. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3115057300
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3115057300
- Listed on breakdowns for: RH 658L/LS/LS-01 Rock Drill, RH 656W Rock Drill

