I need to install just ADB on customer´s PC to connect to android phone and install apk there. And because of SDK size is it possible to do it without installing whole SDK?<
Unfortunately, due to platform tools being moved to a separate package the method above doesn't work any more.
Edit: The new page is here with no info: http://wiki.cyanogenmod.org/w/Doc:_sdk_intro
But the old wiki is still available here: http://oldwiki.cyanogenmod.org/wiki/Howto:_Install_the_Android_SDK/Windows