Okay, I have a vacuum pump rebuild kit. Is there supposed to be oil inside the vacuum pump? There is oil inside of everything, even the area in the front of the pump where the 3 check valves are. Okay, I screwed up slightly. I let the single check valve fallout without noting which way it was installed, can somebody help me out. Is there any magic about rebuilding this thing. I'm just taking it apart and replacing the seals the kit has in it---hope I find them all. On the reinstall how do you deal with the spring pressure, or is the low position on the cam easy enough to deal with? Thanks.