I've got avid single digit 5 v-brakes, those with an inner sleeve riveted into the arm; the sleeve isn't supposed to move around the pivot, the arm itself moves around the sleeve instead. Arguably due to the salt in the street snow, arms are not returning to open position, as described here and here. How can I clean and lubricate those sticky surfaces of the arm and the sleeve, which are completely hidden even after taking the arm off the pivot (i.e. between "A" and "S" on the second image)? WD-40 (Germany) was not good enough. And I'm no smarter after reading the manual (from www.sram.com/service/avid/70).
PS: feel free to edit my English, I'm having a difficult time with mechanical vocabulary...