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Old July 13th, 2015, 03:12 PM   #1
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Flushing the front brakes

I'm going to flush the fluid on my front brakes - I'll be putting on speed bleeders to help with this. I have a couple of questions:

The manual calls for removing the calipers and forcing the pads apart to seat the pistons. It's unclear but I guess you bolt them back on after this process.

During this, the previously drained master cylinder is left open, and fluid is forced up and drained.

Then the standard procedure of filling the cylinder and pumping the lever is done.

2 questions:

1) Is it necessary to pull the calipers etc and seat the pistons?

2) If so - wouldn't it be easier to close the master cylinder and drain the calipers from the caliper speed bleeder?
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Old July 13th, 2015, 03:19 PM   #2
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If you're not replacing pads, I don't see a need to remove the front calipers. Might make installing the speed bleeders easier...or less messy, at least.
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Old July 13th, 2015, 04:03 PM   #3
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I flushed the factory fluid without removing anything except the reservoir cap. No push back of the pads, no problems arose from doing it. I did the normal pump up slowly, hold lever, close valve when the lever touches the bar. Start at the caliper with the two lines attached to it, then move on to the second caliper.
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Old July 13th, 2015, 07:42 PM   #4
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Thanks for the replies - you just saved me some time. Much appreciated.
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Old July 14th, 2015, 07:36 AM   #5
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Now the rear brake, whooooole different story...
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Old July 14th, 2015, 09:23 AM   #6
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True.. That one involves a bunch of steps
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Old July 14th, 2015, 12:28 PM   #7
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Quote:
Originally Posted by gatdammit View Post
Now the rear brake, whooooole different story...
That's for another day. As I understand it, you have to remove a rotate the caliper to get the valve in the proper position.
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Old July 14th, 2015, 01:06 PM   #8
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If your lucky. I tried every trick from every forum and still couldn't get the bubble out.
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Old July 15th, 2015, 09:39 AM   #9
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If your lucky. I tried every trick from every forum and still couldn't get the bubble out.
did you try keeping pressure on the pedal overnight?
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Old July 15th, 2015, 09:51 AM   #10
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did you try keeping pressure on the pedal overnight?
I did not. My pocket was so stubborn that I don't think it would have mattered.
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