i guess that you took it off because it leaked not because it didn't pump therefore you have to have something assembled incorrectly.one of my techs did this once and it took him a couple hrs to figure what was wrong[something back to front i think]

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David S Poole
European Performance
Dallas, TX
4696880422

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
http://www.w108.org/gallery/albums/A...1159.thumb.jpg