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Old 03-25-2011, 10:11 AM   #1
duggy
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Bleed rear brakes

I posted this in the Motorcycles Unlimited forum for Patrick, but wanted to get others opinion also.

I have a weird one for you. I was switching out my tires and had to take out the wheel the other day and had to take my rear brakes off of the wheel. Prior to this, the rear brake works fine and without issue. I put the wheel back on and made sure everything was right when i put it back on and had to compress the pads to get the caliper back on the disc. I get back on the bike and turns out, i have no rear brakes now!

I tried to bleed the brakes by using the bleeder valve in the back but it seems like the system was not building pressure. I got online and saw some suggestions to crack the master and slave banjo bolts open to bleed but that seem to make the problem worse. I had the pedal down when opening all banjo bolts but it seems like the system is now full of air.

I've bled brakes on cars numerous times but this is perplexing me.
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Old 03-25-2011, 10:20 AM   #2
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You SURE both brake pads are in ther caliper?

If so, sounds like you have some air in there somewhere. Buy, borrow or steal a MityVac and it will get the air out of there.

If you have a syringe and a rubber hose you can put some brake fluid in the syringe and attach the hose to the bleeder valve and open it and push fluid back in the caliber to get the air out.

you may have to bleed some fluid out of the brake before you do the back flush to insure you don't overfill the resevoir.
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Old 03-25-2011, 10:29 AM   #3
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Did you pump the brakes with all the bleeder/banjo fittings closed?
If not it could be the pistons got pushed into the calipers and have not been pumped out far enough for the pads to make contact.
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Old 03-25-2011, 10:32 AM   #4
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I'm sure there is air in the system now that I cracked the banjo bolts (it got worse when I did) but yes, I did pump the brakes with all fittings closed. The pads are also there.
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Old 03-25-2011, 10:37 AM   #5
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Did you make sure to tighten the banjo prior to letting off the brake lever? Pump, pump, pump,crack/bleed, tighten, then release.
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Old 03-25-2011, 10:48 AM   #6
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yep. like i said i've bled brakes on cars previously without issue. could anybody help me out and stopping by to take a look at it? i have a full kegarator stocked with miller.
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Old 03-25-2011, 11:42 AM   #7
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Keg huh? You do garage work like I do.
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Old 03-26-2011, 06:36 PM   #8
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Quote:
Originally Posted by duggy View Post
yep. like i said i've bled brakes on cars previously without issue. could anybody help me out and stopping by to take a look at it? i have a full kegarator stocked with miller.
What area are you in? Did you put new fluid in before bleeding?
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