This is Atlas Copco part number 3371820291 trigger plate, stocked at Crowder Supply as AC-3371820291. This is control gear it meters air to the post driver. A worn control gives creep, hard starting, or a tool that will not shut off cleanly.
Crowder’s breakdowns list this part on the LPD-HD-T & RV Hydraulic HD Post Driver and PDR 95T 95RV Hydraulic Post Driver, and on 4 other machines. 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 full 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: 3371820291
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371820291
- Listed on breakdowns for: LPD-HD-T & RV Hydraulic HD Post Driver, PDR 95T 95RV Hydraulic Post Driver, PDR 75T 75RV Hydraulic Post Driver, MDR 75T HBP 75 RV HBP Hydraulic Post Driver, LH 22 23E 27 28E Hydraulic Paving Breaker, LPD-T & RV Hydraulic Post Driver

