08-08-2012, 03:13 PM
Yeah you need some sort of basic knowledge as to what different parts of the pump do before you go opening the pump otherwise it would be somewhat pointless. BUT having said that, you could figure some of the stuff out by just opening it and using a bit of common sense. There is a bosch ve pump manual on the net. I had it on my laptop before it died... but if you have a quick search i'm sure you could get hold of it. Most diagrams of the pump internals on the net are from that manual. It tells you EVERYTHING. Enjoy 
Niv
Niv
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Dturbo GT2259s build thread;
http://306oc.co.uk/forum/thread-3692.html
Daily driver; 330d Msport (doesn't blow up!)