Do you have the service manual? I wouldn't attempt any work -- even easy ones like this one -- without the service manual. In it you would learn that:
a) you clean the filter with a solvent,
b) you don't need to bleed it, and
c) it calls for you to replace the O-ring with a new one.
I bought both a service manual and a parts catalog (so you can determine the O-ring part number before calling dealers) for $45 on a CD from
www.mccurtaintg.com
Ernie