This is Atlas Copco part number 3371821178 spring, stocked at Crowder Supply as AC-3371821178. Springs in a breaker fatigue with cycle count rather than age, so a control that has gone lazy or fails to return is usually this part rather than the component it drives.
The published breakdown lists it on the BRK 55 55VR 55VR HBP 55 HBP Hydraulic Paving Breaker and BRK 40 40VR Hydraulic Paving Breaker, and on 8 other machines. Compare it to the reference callout on the diagram to be sure it is the position you need.
The full diagram library indexes every breakdown we publish, and the Atlas Copco tool range has the tools these parts go into. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3371821178
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371821178
- Listed on breakdowns for: BRK 55 55VR 55VR HBP 55 HBP Hydraulic Paving Breaker, BRK 40 40VR Hydraulic Paving Breaker, MH55 55A HBP Hydraulic Paving Breaker, MH70 70A HBP Hydraulic Paving Breaker, LH390 390HBP 400E 400E HBP Hydraulic Paving Breaker, LH220 220HBP 230E 230E HPB Hydraulic Paving Breaker, +4 more
