Vickers C Kit 35VMQ-135 VITONL (BLD LT)

For a pump showing those exact symptoms, a genuine cartridge kit is usually the right call before you go pulling the whole unit. This kit covers the internal replacement components specific to the 35VMQ-135, so you're restoring the pump to its original performance spec rather than working around worn parts. Using a kit sourced directly for that model keeps everything matched up the way Vickers intended it, which matters a lot when you're trying to bring pressure and efficiency back in line.

Replacing the cartridge kit is a straightforward process since it's designed as a drop-in replacement. You'll need some basic tools, but it avoids the need to replace the entire pump unit.