This is Atlas Copco part number 3376100084 O-Ring, stocked at Crowder Supply as AC-3376100084. Its job is to hold the pressure boundary between two mating faces; a hardened or nicked seal shows up as lost power and a damp housing well before anything else fails.
The published breakdown lists it on the MH70 70A HBP Hydraulic Paving Breaker and MDR 75T HBP 75 RV HBP Hydraulic Post Driver, and on 14 other machines. Check it against the reference number on the diagram first; serial breaks change what fits.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3376100084
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3376100084
- Listed on breakdowns for: MH70 70A HBP Hydraulic Paving Breaker, MDR 75T HBP 75 RV HBP Hydraulic Post Driver, LH 22 23E 27 28E Hydraulic Paving Breaker, LH 39 40E Hydraulic Paving Breaker, LH390 390HBP 400E 400E HBP Hydraulic Paving Breaker, LH220 220HBP 230E 230E HPB Hydraulic Paving Breaker, +10 more
