Hyd Pumps

[GMPoland]

I spoke with Power pacs + and quality. Was going to call Tulsa ,Cox and two shops in Atlanta that I know of. There is a shortage of pump parts or kits. And now rebuildable cores. According those two sources. A few pumps are available but price is upwards of 1700 + 1500 core. I used the controller and wb parts, part locator. My particular situation is that I bought two used pumps that were overhauled in 2010 had maybe 250 hours on aircraft. I installed on my aircraft and both would not make pressure. So I sent in to quality and wound up with both pumps having unserviceable cases, shafts, gears and scoring on bearing surfaces. I had them return units to me. So I can only assume that pumps installed on my aircraft may be suspect as well. Front one function checks okay however rear takes over 8 seconds to return handle to neutral. My SN is 0127 so I have old system with optional rear pump.