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09-03-22, 08:07 PM | #1 |
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Temporarily sealing brake hoses
I need to strip and clean my calipers. Anyone got any good tips to keep as much fluid in the brake lines as possible while I do it?
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09-03-22, 08:29 PM | #2 |
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Re: Temporarily sealing brake hoses
Sounds obvious but gravity is the only chance you have. Get the calipers high up before you remove them. I imagine you'll end up with some air in the lines anyway and have to flush all the fluid through to push it out. I'd just accept that it will happen and drain the fluid.
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09-03-22, 08:31 PM | #3 |
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Re: Temporarily sealing brake hoses
Is it an issue if they empty (i'm thinking ABS pumps and air locks)?
i would raise the end of it as high as you can (keeping the open end facing vertical) to remove any gravitational pull and reduce head height pressure. And use some rag/blue towel over the end as it shouldn't absorb too much, and secure it with a cable tie, or gaffer tape. |
09-03-22, 08:45 PM | #4 |
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Re: Temporarily sealing brake hoses
If it has ABS then yes, it can be.
Depends on the bike but often you'll need the diagnostics software and interface to activate the ABS pump and use it to pump fluid through and bleed it. I know Triumphs can be done with the aftermarket "Dealertool" software and dongle which is cheaper at £65 than OEM software and interface. OEM devices are normally prohibitively expensive. In theory you could ride the bike and try to get the ABS to activate as much as possible to push air out, but that would be one hell of a ride and not sure it would be totally successful.
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09-03-22, 09:05 PM | #5 |
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Re: Temporarily sealing brake hoses
Yeah it's got ABS. I've never bled a bike with ABS before so I'm not looking forward to it!
It's an Aprilia Dorsoduro if it makes any difference |
09-03-22, 09:22 PM | #6 |
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Re: Temporarily sealing brake hoses
In which case, i wouldn't let the lines bleed out. Not unless you have a tool to pump the ABS module to help bleed the entire system.
The main thing is not to let the line between the MC & module go dry. If it's the line from the pump to the callipers, you'll be fine as no air has entered the ABS system. Thinking about it, you could use some mole grips on the brake line (not hard) enough to reduce the flow of fluid and prevent them bleeding as quick. And with them raised that should help to slow the flow further. |
09-03-22, 10:09 PM | #7 |
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Re: Temporarily sealing brake hoses
Don't drain the system if it has ABS. Do as you planned and try to keep as much fluid in the lines and then bleed the standard lines as normal to fill the calipers. Should be ok.
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09-03-22, 10:20 PM | #8 |
John T
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Re: Temporarily sealing brake hoses
Car mechanics often use a clamp on the hose. I can't say I've ever used one on a bike though.
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09-03-22, 10:22 PM | #9 |
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Re: Temporarily sealing brake hoses
Thanks guys. I'm thinking raise them up like you say and putting a normal bolt in with the old washers just in case
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09-03-22, 10:22 PM | #10 |
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Re: Temporarily sealing brake hoses
I really don't like the idea of a clamp, especially on braided lines
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