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More PT pump trouble


http://forums.aths.org/Topic188284.aspx
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By sbkenn - Thursday, May 30, 2019 11:57 AM
In this case, a PTG-SV, not getting fuel through to the shutoff valve. There is substantial pressure at the return port directly on top of the gear-pump though, , but I haven't been able to fathom where the fuel at that port is supposed to come from. Also, is there a mesh strainer on the SV variant ? I don't actually need the VS function, but it is there, so I have to deal with it. This is a later pump, the one that has 2 springs in the AFC. If I take the AFC piston assy out, I do get fuel there, but still with pressure at the pump-port. If I leave that port open fuel no longer gets to the AFC.
Advice requested
TIA