Lock Ring is the Atlas Copco service part carried under part number 3371820740. It pins its assembly together. Vibration is what kills them, so they are cheap insurance during any teardown of the post driver.
Crowder’s breakdowns list this part on the MDR 75T HBP 75 RV HBP Hydraulic Post Driver and LH 22 23E 27 28E Hydraulic Paving Breaker, and on 4 other machines. 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.
If you need the parts around it, the parts breakdown index has the full breakdown library, and the Atlas Copco tool range covers the machines themselves. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 3371820740
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371820740
- Listed on breakdowns for: MDR 75T HBP 75 RV HBP Hydraulic Post Driver, LH 22 23E 27 28E Hydraulic Paving Breaker, BRK 70 70VR 70HBP 70 VR HBP Hydraulic Paving Breaker, BRK 55 55VR 55VR HBP 55 HBP Hydraulic Paving Breaker, MH55 55A HBP Hydraulic Paving Breaker, MH70 70A HBP Hydraulic Paving Breaker
