Straight Answer First
If you searched for a "Volvo mobile crane hydraulic pump," here's the honest answer: Volvo Construction Equipment doesn't build all-terrain or truck-mounted mobile cranes, or any crane at all. Its product line is excavators, wheel loaders, articulated haulers, motor graders, backhoe loaders, and compaction equipment. We'd rather tell you this directly than pretend otherwise with a padded product page.
Volvo Group as a whole includes Volvo Trucks, which can serve as a chassis for third-party crane attachments (Hiab, Palfinger, Fassi, and similar specialists) — but that's a different business from Volvo Construction Equipment, and the crane hydraulics in that case belong to the crane manufacturer, not Volvo. If that's your situation, WhatsApp us the crane brand fitted to your truck and we'll check availability under the correct name.
If you actually meant a Volvo excavator, we cover that directly: