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Brake leaver question

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That_Hornet
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PostPosted: 11:57 - 04 Jul 2009    Post subject: Brake leaver question Reply with quote

Changed my leaver yesterday. Now feels really damp and soft. It's a Honda copy leaver, reasonable quality. I think I need to blead the brake. Any one confirm this.

Also, do I need a proper bleed kit, or can I use a bit oh pipe and a jug of water?
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Ichy
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PostPosted: 12:20 - 04 Jul 2009    Post subject: Re: Brake leaver question Reply with quote

ThatHornet wrote:
and a jug of water?


Never heard of that one, I'd be interested in how it works.


Easiest way is a length of tube and a glass jar with some brake fluid in the bottom of it. Another way is to get a long length of tube that reaches back up to the master cylinder.
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TheFoxyDuke
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PostPosted: 19:30 - 04 Jul 2009    Post subject: Reply with quote

Or an easy bleed kit jobbie from somewhere like Halfrauds. About a tenner IIRC.

I use one all the time without any problems. Probably a lot less messy as its all self contained and shouldn't spill. Has a one way valve to release the fluid/air but stop any air being drawn back in.


But yes, it does sound like a quick bleed is in order. Oh, and tie your lever back to the bar overnight to proper firm things up Wink

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That_Hornet
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PostPosted: 19:43 - 04 Jul 2009    Post subject: Reply with quote

TheFoxyDuke wrote:



But yes, it does sound like a quick bleed is in order. Oh, and tie your lever back to the bar overnight to proper firm things up Wink

FoxyD


please more detail
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Adrian
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PostPosted: 21:15 - 04 Jul 2009    Post subject: Reply with quote

I use the Halfords bleeding kit for motorbikes on my brakes. Does the job... Smile
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That_Hornet
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PostPosted: 21:26 - 04 Jul 2009    Post subject: Reply with quote

off to halfords in the morning then.

So just getting my simple mind around this completly foolproof task.


    undo res cap
    take out diaphram
    pump leaver until bubbles stoped
    temprally put res cap back on
    undo bleed nip
    pull leaver back until bubbles stop appearing and fluid is out
    topping up as needed
    tighten nipple
    repete on oppisit side


anything missed?
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Ichy
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PostPosted: 21:58 - 04 Jul 2009    Post subject: Reply with quote

Seriously, you need to search the 'net on how to bleed brakes or find someone local to show you how. Its pretty simple but I'm worried that If I explain then I will be held accountable when you crash Wink .

There are a load of videos on you tube that might be worth watching, try this for starters.

https://www.youtube.com/watch?v=oA3HIVkup94
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Kickstart
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PostPosted: 22:12 - 04 Jul 2009    Post subject: Reply with quote

Hi

Bit concerned about why changing a lever would land up with the brakes needing bleeding.

All the best

Keith
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That_Hornet
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PostPosted: 22:39 - 04 Jul 2009    Post subject: Reply with quote

Not to sure myself. i pull the leaver and it comes back to the bar almost, but still stops the bike. Even when adjusted fully. So the only thing i can think is bleed the system.

Anything you can sudjest?
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Doovy
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PostPosted: 23:40 - 04 Jul 2009    Post subject: Reply with quote

isnt there a circular retaining nut thing that you adjust for the strength of the brake in between the lever and when it is bolted onto the bars?
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That_Hornet
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PostPosted: 23:45 - 04 Jul 2009    Post subject: Reply with quote

That's full adjusted

will have another look tomorrow.
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Mr Hammers
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PostPosted: 00:41 - 05 Jul 2009    Post subject: Reply with quote

If you just changed the lever, then you wouldn't have touched the master cylinder would you?

If you haven't, then I can't see how air could have got in the system myself. Confused You don't want to start bleeding your system if you don't need to. It is theoretically simple but can easily turn into a pita.

I suppose you've tried just pumping it up a bit for a minute or so, just in case it's where the fluid has 'taken up the slack' a bit maybe?

If you do bleed it, make sure you cover up your paintwork! Thumbs Up Very Happy
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Kickstart
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PostPosted: 18:18 - 05 Jul 2009    Post subject: Reply with quote

doovydoo wrote:
isnt there a circular retaining nut thing that you adjust for the strength of the brake in between the lever and when it is bolted onto the bars?


Be careful adjusting this (indeed this could be the problem). The issue can be that with the lever fully out the bolt holds the piston slightly closed, and can hold it in such a position that it blocks the hole from the reservior to the master cylinder. Hence as the brakes wear and fluid is needed to take up the space of the pistons moving out none gets in.

All the best

Keith
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