I have a Vaccum pump oil leak and ordered the repair kit from an ebay seller ramtrans1 . Comes with a DVD or VHS as a tutorial and every seal you need to repair the Vac pump/Powersteering pump assembly from oil leaks. On the DVD he goes through rebuilding it showing the guts of the Vac pump, etc. It turns out the DVD I got crapped out 14 Mins into the presentation so I sent him an email explaining the situation, and with out hesitation, not only did he send me out a new DVD but also a VHS copy and a free starter rebuild kit with the heavy duty contacts/plunger for my trouble! Theres a lot of bad sellers on ebay but this guy showed such great cust service I figured Id pass the word along. 
