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Posted by chief
 - June 06, 2022, 16:37:17 PM

First, triple check everything. I'd go ahead and replace the seals... they are supposed to be evaluated and replaced every 4 years. Also make sure all the passages and ports in the master and  caliper pins and bushings are thoroughly cleaned. Could be a debris problem. If one of the ports/pin holes in the master is clogged you will have problems. 

Posted by gwilki
 - June 06, 2022, 15:36:50 PM

Last Fall, I replaced the brake line, brake pads and new fluid. At the start of this riding season, all was well.

Two days ago, I noticed that the lever was almost touching the grip to get the brakes to engage. The master cylinder was full. I bled the brakes again and got a bit of improvement, but not enough. I stopped work for the day. Today, I pulled the lever and nothing. Master cylinder is full.

I suspect that the seals/piston, being 22 years old, are not holding pressure in the system.

There is a rebuild kit available here in Canada for ~ $55.

Given the symptoms and what I've done so far, can someone here please tell me if you believe that I am on the right track believing the master cylinder needs a re-build?

thank you

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