4200Xl pump not operating and getting hot.

[TheBennyB]

So took my valve block out to tighten everything up and try to hunt down a leak. Couldn't really find anything, put everything back together and now the pump won't pull oil and gets hot. I tried priming it by tilting the tank and it took oil but as soon as I put the tank level again it won't pull. Also while the tank was tilted and feeding the pump I tried functions and no pressure. Guessing I did/didn't do something on reassembly? Wou/dn't think I damaged anything on assembly, I did remove the feed line from the pump to the valve block on the pump side. Any thoughts?