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 Post subject: Brake - Piston Help
PostPosted: Wed Mar 16, 2011 11:09 am 
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Posts: 537
Attempted a brake bleed, which turned into an arse if a job when I found two pistons had seized. Sorted it and did the bleed, but wondering if I should have put some lube or oil on the pistons after cleaning them? If so, what's best to use?

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 Post subject: Re: Brake - Piston Help
PostPosted: Wed Mar 16, 2011 12:06 pm 
Posts: 1147
Location: Chingford
I cover everything in Teflon grease :)

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"Dude, She called you fat.... "OH HELL NO, HOLD MY CAKE"


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 Post subject: Re: Brake - Piston Help
PostPosted: Wed Mar 16, 2011 2:01 pm 
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Your brakes never work and you also hit everything with a hammer ;)

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 Post subject: Re: Brake - Piston Help
PostPosted: Wed Mar 16, 2011 5:48 pm 
Posts: 351
Make sure they are 100% clean too!


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 Post subject: Re: Brake - Piston Help
PostPosted: Thu Mar 17, 2011 12:57 pm 
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To answer my own question, it seems the best thing to use as lube is the DOT fluid itself. Anything else can damage the seals. Mine should be well lubed then, as should the kitchen floor, frame, rotor, tyre.. :roll:

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 Post subject: Re: Brake - Piston Help
PostPosted: Thu Mar 17, 2011 2:28 pm 
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Whenever you get DOT anywhere neutralise it with water straight away! Its lethal stuff, No lube just dot on the pistons would make sense if they have seen better days.

But make sure its not enough that it'll get anywhere near the pads though.

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 Post subject: Brake - Piston Help
PostPosted: Thu Mar 17, 2011 5:03 pm 
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Posts: 537
The bike got a hose down after, but not immediately. Wasn't expecting the piston to fall out, so the DOT flood that followed wasn't planned. The pad then got a soaking later when I pumped the lever with the caliper syringe still in! Its a tough learning curve.

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 Post subject: Re: Brake - Piston Help
PostPosted: Thu Mar 17, 2011 5:13 pm 
Posts: 1147
Location: Chingford
If you have wood flooring, brush it in and say you were "varnishing" the floor :)

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"Dude, She called you fat.... "OH HELL NO, HOLD MY CAKE"


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 Post subject: Re: Brake - Piston Help
PostPosted: Mon Mar 21, 2011 10:51 am 
Posts: 351
Aye...brakefluid is fucker.

DONT wipe it off wioth a cloth...,itll only make it worse. Use water to wash it off,


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 Post subject: Re: Brake - Piston Help
PostPosted: Mon Mar 21, 2011 12:10 pm 
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Posts: 537
I found that - a cloth just moves it around. Everything got a good hose down after I'd finished.

After much trial and error and around 5 bleeds (due to various mistakes) I've got it down to under 20 mins now. I've also discovered that a pad soaked in brake fluid is essentially useless, except for using to spread the pistons or as a loud honking musical instrument!

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 Post subject: Re: Brake - Piston Help
PostPosted: Mon Mar 21, 2011 6:30 pm 
Posts: 1147
Location: Chingford
My brakes need a bleed steve, seeing as now your pro at bleeding, fancy giving them ago ;)

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"Dude, She called you fat.... "OH HELL NO, HOLD MY CAKE"


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 Post subject: Brake - Piston Help
PostPosted: Mon Mar 21, 2011 7:11 pm 
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Posts: 537
Sure. I'm no expert at it, but I've tried yours and mine's 100 times better :p

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 Post subject: Re: Brake - Piston Help
PostPosted: Sat Apr 02, 2011 11:26 am 
Posts: 80
trax wrote:
Your brakes never work and you also hit everything with a hammer ;)

That's true brad


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