This is the Atlas Copco detent pin part number 3121079900, Crowder SKU AC-3121079900. It locates or retains an assembly inside the pusher leg. Small as it is, a sheared or walked-out pin lets a whole subassembly shift.
It is called out in the parts diagram for the ALF 72D 72D-1 Pusher Leg and ALF 67/80 67/80D Pusher Leg. That machine is the Atlas Copco Pusher Leg Attachment For BBC Series Rock Drills if you are pricing a replacement rather than a repair. Pull up the diagram and confirm the reference number for your serial before ordering.
Everything else on that machine is one page away, and the parts breakdown index indexes every breakdown we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3121079900
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121079900
- Listed on breakdowns for: ALF 72D 72D-1 Pusher Leg, ALF 67/80 67/80D Pusher Leg
