Originally Posted by mookymoo
Just take the weight off the suspension - centre stand if you have it , or if not, a bike stand.
Loosen the lock ring - then use your hands to spin the whole spring & lock ring together. Should be easy. DONT use a hammer & punch.
If you have to, takes moments to remove the whole shock - then work on it on the bench.
While it can be done with hand (somtimes difficult) or with a punch and hammer (beats up your adjusting ring), there is a relatively cheap tool designed for the job.
Lots of different versions, but they all look a bit like this:
About $9 here
Or you can even buy a pretty KTM version...
Part U6951172, about $25.