• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

Rear brake master cylinder rebuilding

ray_ray

Mini-Sponsor
Has anyone pulled the plunger out of one of a Brembo rear brake master cylinder and seen what exactly is in there for seals... Are 2 smalls o-rings used on the piston or is it some OEM specific thing used?

This pic shows what appears to be 2 small o-rings on the piston but I'd like to confirm these are really o-rings and can be found at many part stores before I tear into the cylinder...

Brake_piston.jpg
 
my '06 250 wr had cupped seals - not o-rings
Also,
check where the chain slaps the brake fluid feed line into the master- mine had a wee leak there from wear- was not a faulty master after all
 
Sorry for hi jacking the thread but does anyone know if part no.35 fits the wr 250 frame
 
my '06 250 wr had cupped seals - not o-rings
Also, check where the chain slaps the brake fluid feed line into the master- mine had a wee leak there from wear- was not a faulty master after all

I see a little rubbing on the brake line also but mine is leaking from the cylinder ...

Are those cupped seals available anywhere? Dealers wanted to sell me the piston also at ~$40.000 ...

Not sure if the guards fit a WR250 ...
 
I see a little rubbing on the brake line also but mine is leaking from the cylinder ...

Are those cupped seals available anywhere? Dealers wanted to sell me the piston also at ~$40.000 ...

Not sure if the guards fit a WR250 ...
suggest the piston should be replaced also as it will show signs of wear if you have been getting the miles on
 
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