how do i disassemble a summicron-m 90 from 1973?

[harry_zet]

<p>i do have the tools, but would like to have a manual or the like, which describes how to get to the lenses inside - one has a fairly big hair on it that shows up on the poictures and i need to clean it. any hints where i can find a manual or so on the web?</p>

[SCL]

<p>You might try asking the question in the Classic Camera Repair Forum of Kyphoto at http://www.kyphoto.com/classics/forum/messages/2/2.html?1339909069. I'm not aware of any online manual for disassembling Leica lenses, although Tomosy or Romney's books might address the issue (try your local library....they are pretty expensive and hard to find....I found a copy in my local library system about a year ago).</p>