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Why do I need to service my brakes and Why don’t they work well after bleeding

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Why do I need to service my brakes and Why don’t they work well after bleeding

Old 04-22-2016, 12:10 PM
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Why do I need to service my brakes and Why don’t they work well after bleeding

Why do I need to service my brakes every year or so?
And
Why do my brakes not work well after bleeding, they seem spongy but fluid is fresh?

Two common questions I get all the time.
Bike is a Bn125, fluid was recently “flushed” brakes remained all but unusable, spongy, no stopping power.. This issue is common to all bikes (and cars, trucks as well)

Pads showed uneven wear, side to side, normally caused on single sided piston calipers buy the caliper not moving freely on the slider pins (if you see that or front to back wear on a caliper with opposing pistons, you have one or more pistons not moving freely)


What I found in the caliper behind the pistons where they “should” have been only clean brake fluid is not atypical at all.





So if you have a squishy lever, bleeding has not resolved the issue, plan on servicing the brakes….Thats MC, the lines and the caliper.
MC piston set, caliper seals, new lines if your using rubber,
Some brake fluid, cleaner of your choice (the slider pin holes in the caliper may need to soak for a pit to dissolve old grease…or toss the disassembled caliper in your heated sonic tank…..LOL yes I cheat
And you're back in business .
Attached Thumbnails -pads.jpg   -caliper.jpg   -piston.jpg   -caliper-junk.jpg  
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Old 04-22-2016, 09:00 PM
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Wow... Crazy
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Old 04-23-2016, 04:39 AM
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Yes that stuff it a murky mess, put a magnet to it and you would be surprised! A nice fine slurry of fine metal particles mouisture, decomposing inner brake tube... yum. Change out your fluid even two years minimum, clean the clipper puck bellows gently, (I use a baby tooth brush and silicone) never seize the slides bits on the caliper and that junk is held at bay for along while. Nice work Eric!
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