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Blown fork seal

7.7K views 37 replies 14 participants last post by  DustyTrails  
Just found a puddle of oil on the ground after parking the bike in the garage for a week. I pried down the wiper seal and then used a fork seal scraper to clean under the fork seal. I did find a very small pice of debris on the seal tool and It seems to have stopped the leak. I couldn’t believe the pressure that came out of the fork. Also hope someone chimes in with some info on the pressure question?
They will build up pressure with temperature or altitude changes. Leaks are the result of dried dirt getting shoved up in the seal. Even a minute amount could manifest a leak, especially if there is an air pressure build up . I can modify the fork caps to add bleed screws. Its a relatively simple machining operation.

I believe I have some of the 43mm seals in stock if anyone needs them.
 
Do you sell the modified caps?
I do not. I would need your caps to modify. I see a lot of minute road grime that builds up on street/Adv forks that seems to kill fork seals. Usually it’s in the last inch or two of the travel. Had two sets in the last week that I had to scrub the grime off with a scrubbing sponge/steel wool. So inspect the chrome. Just because you’re not riding off-road doesn’t mean things aren’t getting dirty. I’ve had road race bikes that seals went bad due to rubber dust from sticky race tires on the chrome. The road grime seems totruly stick to chrome worse than regular dirt and mud.
this is from a Versys fork
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