Had a problem with my Crank brothers pump, Every time i connected it to an inflated tire it would blow the rear part to the fully extended position..

Any how i had lost my receipt despite being able to find one for everything else and the Saturday gimp at halfrauds was less than helpful ("cant do anything unless you have a receipt") despite it having a lifetime warranty....

sent an e-mail to Crank brothers and got a full set of strip down instructions (hadn't attempted to take it apart till tonight See name above) ;-) and surprise surprise it went back together working again.....

((the rubber non-return valve had moved off its seat))

So thanks to Crank Brothers Normally you E-mail a manufacturer and get no reply so it was a surprising to get a 2 page download link with colour photos and an explanation...