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post #1 of 4 Old 05-31-2011, 5:09 PM Thread Starter
 
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Brake Caliper Seals

Just got in from enjoying the benefits of the longer days and lighter nights, i.e. Get a ride in after tea, to find a Black Oily film over one of my front brake discs.
During my ride I thought I could detect a vague burning smell and even pulled over to check, but couldn't see anything amiss. It was only on closer inspection that I found the above.
There seems to be a drip of the same fluid on the bottom of one of the calipers and the rim on that side feels a little grimy, but there doesn't appear to be any fluid loss from the reservoir.

So Question is: Is it the Brake Caliper Seals? and what can I do about it? (is it safe to ride to the Garage)

Last edited by Treganin; 05-31-2011 at 5:11 PM. Reason: typo
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post #2 of 4 Old 05-31-2011, 5:44 PM
 
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Re: Brake Caliper Seals

My guess is a fork seal on that side. Use some brake parts cleaner to get it off there. Should be ok to ride easy to shop.
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post #3 of 4 Old 06-01-2011, 7:05 AM
 
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Re: Brake Caliper Seals

I'm no Bladeracer, but I would have a look for the leak myself. Probably either fork seals or brakes. First I would check the fork seals for any signs of a leak, and give the suspension a good bounce to see if any oil leaks out.

If not, remove the caliper, take the pads out, put some wood in between the brake pistons and pump the lever to see if you can get any fluid to leak out.

Once you know what it is, you can decide to have a go at fixing it yourself or taking it to the garage with the exact fault known.
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post #4 of 4 Old 06-01-2011, 1:45 PM Thread Starter
 
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Re: Brake Caliper Seals

Quote:
Originally Posted by txrider View Post
My guess is a fork seal on that side. Use some brake parts cleaner to get it off there. Should be ok to ride easy to shop.
I think you could be right

Quote:
Originally Posted by Dangerous Des View Post
I'm no Bladeracer, but I would have a look for the leak myself. Probably either fork seals or brakes. First I would check the fork seals for any signs of a leak, and give the suspension a good bounce to see if any oil leaks out.

If not, remove the caliper, take the pads out, put some wood in between the brake pistons and pump the lever to see if you can get any fluid to leak out.

Once you know what it is, you can decide to have a go at fixing it yourself or taking it to the garage with the exact fault known.
See above

First thing I did when I got in from work was too see what was occuring. It looks like the oil is leaking from the bottom of the right hand fork, dripping onto the disc and then accumulating on the brake caliper when they're applied.

I didn't get to bouncing on the front, If I was to would I expect to see more oil coming from the area if it was the forks?

I think that the 'black' oil was where it had been burnt by the brake pads, as there is a clear oil at the bottom of the forks.
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