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28-02-2019, 06:33 PM | #1 |
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1100 Evo rear brake
The rear brake on my 2011 1100 Evo goes soft if I haven't ridden for a couple of weeks. I had it bled last summer, and it sounds like something that I may not be equipped for at home.
This time it happened after it was sitting idle for 4 weeks over Christmas/New Year's. Is this a problem anyone else has experienced? What troubleshooting should I go through? What should the cost of bleeding it out again be? |
28-02-2019, 09:25 PM | #2 | |
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Join Date: Aug 2011
Location: Southampton
Bike: M1100evo
Posts: 2,465
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Quote:
Quote:
A dealer will probably charge you an hour's labour to do it, but make sure you tell them to flip the caliper, otherwise you'll be having the same problems again in a couple of months. |
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02-03-2019, 12:59 PM | #3 |
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Thanks for this! The garage did turn it flip it last time which is why I'm a little annoyed its happened again.
Thinking back... I think it was last May so maybe it just needs doing every 8-9 months? |
02-03-2019, 06:58 PM | #4 |
Lord of the Rings
Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,963
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If it's been bled properly and lever action is restored to firmness, then it shouldn't need bleeding again so soon or often as yours.
There could be a leak somewhere? At any of the joins in the line, or an imperfect seat on the bleed nipple, or tired seals in the master or calliper. It could also be down to very old fluid in need of a complete change, or inferior, or incorrect fluid. On my 900 I had problems with the pads not retracting as they should although the brake was very effective. I tried all the usual things but finally cured it by fitting a new master. The Brembo rear brake masters aren't great and do fail unfortunately.
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02-03-2019, 08:15 PM | #5 |
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I had a pad return issue in my 796 that turned out to be an internal corrosion issue in the master cylinder. I had to replace it to restore the functionality.
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02-03-2019, 09:16 PM | #6 |
Registered User
Join Date: Aug 2011
Location: Southampton
Bike: M1100evo
Posts: 2,465
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You may still have air in the ABS pump itself. I've heard that activating the ABS a few times helps to clear air from the system (always assuming your back brake is strong enough to trigger the ABS, of course!) The ABS unit can be bled, either by loosening the banjos or fitting a bleed nipple.
As a last resort, it may be corrosion in the master cylinder. See here for more details: http://www.ukmonster.co.uk/monster/s...ad.php?t=55504 |
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