This is Atlas Copco part number 3371821159 HBP striking piston, stocked at Crowder Supply as AC-3371821159. This part holds and guides the steel. Elongation of the shank bore is the usual reason for replacement, well before any crack appears.
The published breakdown lists it on the LH 22 23E 27 28E Hydraulic Paving Breaker and LGRD RV 16 RV25 Hydraulic Ground Rod Driver. Compare it to the reference callout on the diagram to be sure it is the position you need.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Atlas Copco catalog. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3371821159
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371821159
- Listed on breakdowns for: LH 22 23E 27 28E Hydraulic Paving Breaker, LGRD RV 16 RV25 Hydraulic Ground Rod Driver
