• 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 The previous version was outdated and no longer supported.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!

Leaking front brake reservoir

with a little bit of weeping/sweating the problem is not the fluid getting out. It would take a pretty long while before you'd have to add fluid.
The problem is that if brake fluid can get out, water can get in. Especially with the hygroscopic nature of brake fluid. Water in the brake fluid will degrade it faster and (in very extreme cases) could cause it to boil, leading to loss of brake pressure.
Keep an eye on the fluid color and replace in time when needed.
 
Snail 72, I think you might be doing something wrong.

Where are you bleeding it from?
It sounds like you are trying to do it at the banjo fitting up on the reservoir.
You should be bleeding it from the bleed nipple down on the caliper.

You note a small air bubble or no visible bubble, are you referring to the sight glass on the reservoir?
There should be a bubble there when it is level on all planes, other wise it is over full.

DuibhceK,

Yea these BMW/Brembo set ups suck and I don't doubt water is getting in.
Both the X-Challenge and the Terra's fluid looked like black coffee in the course of a few months.
Most other bikes would still be clear even after a few years, or at worse a bit darker.
 
snail_72 said:
.. its been a week now and i can feel it slowly getting softer...

is there something i'm doing wrong?.. i've done a lot of cars, 4x4s and bike breaks before. very easy.
Click to expand...

You MUST have a very small leak somewhere, otherwise air can't enter a closed system.
Either somewhere along the lines, fittings or wheel cyl.
But air IS entering somewhere (and most likely fluid leaking out) otherwise they can't get "spongy".
See your dealer for a check.


Slight weep here, too....bike's never been on the road yet :eek:
 
Ogre_fl said:
Snail 72, I think you might be doing something wrong.

Where are you bleeding it from?
It sounds like you are trying to do it at the banjo fitting up on the reservoir.
You should be bleeding it from the bleed nipple down on the caliper.

You note a small air bubble or no visible bubble, are you referring to the sight glass on the reservoir?
There should be a bubble there when it is level on all planes, other wise it is over full.

DuibhceK,

Yea these BMW/Brembo set ups suck and I don't doubt water is getting in.
Both the X-Challenge and the Terra's fluid looked like black coffee in the course of a few months.
Most other bikes would still be clear even after a few years, or at worse a bit darker.
Click to expand...


From both. at the top of the reservoir once you put off the cap the is a small allan key to bleed the master... once i do the master it comes good but when i flushed out the system i did both.
 
Huh, is there a cap under the diaphragm where this allan key is?
I have never seen it, but I am thinking it is where I have a small button looking indent.
Is your bike an ABS bike? Are the reservoirs different?
 
Ogre_fl said:
Huh, is there a cap under the diaphragm where this allan key is?
I have never seen it, but I am thinking it is where I have a small button looking indent.
Is your bike an ABS bike? Are the reservoirs different?
Click to expand...


Under the cove/diaphragm just before the banjo fitting you will need to wipe it with a cloth to see it, its part of the housing a 3mm allan key to bleed the master cylinder. nope my bike isn't a ABS bike.
 
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