I believe Edson has directions how to. Basically it is just gluing new brake material onto the existing assembly. You are right about working in the confined space but parts are recoverable if you remove the cowl in the aft cabin. What I remember about doing this is realigning and getting the compass back into correct position. Screws are long and at that time you are working blind.

Hey Steven, you likely have the thru-shaft brake which is adjusted with a knob located at the end of your steering shaft that puts pressure on a round pad.  This is unlike other brakes where there is a knob located at the side of the pedestal that puts pressure on a pair of curved pads.

The rebuild kit for the thru-shaft brake is 316-336-402-TSB Brake Kit.  You do have to be careful about not dropping parts down the pedestal.  If possible, work a rag into the space below where you'll be working in order to catch any parts.  Accessing the bottom of the pedestal to retrieve dropped parts might also require you to also remove the pulley plate as most parts end up sitting on this plate.

Although does not cover thru-shaft brake refit, this video might help insofar as getting access to the shaft enough to do the job:  https://www.youtube.com/watch?v=IqK__YMcxww

You have to decide if the path of least resistance is the brake job vs. using another means to immobilize your wheel.  Whimsea needs a brake job, but I have elected to take the chicken way out:  I use my autopilot clutch to immobilize the wheel when not in use.