Compressing front brake piston

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mani
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Wed May 09, 2012 11:21 am

hi guys

Is there any home way of compressing my front brake piston back into the caliper as i dont have the right equiment

thanks mani
macas
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Wed May 09, 2012 11:36 am

Go buy yrself a little G clamp,they are cheap as fook.
mani
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Wed May 09, 2012 11:54 am

Where would I get it from halfords ?
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alan1272
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Wed May 09, 2012 11:54 am

big pair of water pump liers can work too.
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Rtaylor2208
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Wed May 09, 2012 12:12 pm

Bought a G Clamp from B&Q last friday for £4. Also make sure you have removed the brake fluid resevior cap before trying to compress it again.
mani
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Wed May 09, 2012 1:11 pm

Cheers lads b&q it is then
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Brianmoooore
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Wed May 09, 2012 6:58 pm

NEVER push back a calliper piston with the system closed!
Not only does it make it hard to do, but it pushes the usually cruddy fluid in the calliper back into the master cylinder and ABS pump, and has been known to invert the seals in the master.
Always put a bleed tube on the bleed nipple, open the nipple, and let the displaced fluid escape.
With the nipple open, you should be able to push the piston back with your fingers.
When you stop pushing the piston, it will tend to spring back very slightly, and possibly draw a very small amount of air in via the nipple, so wait a couple of seconds for fluid to start flowing by gravity before you close it off.
milescook
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Thu May 10, 2012 10:30 pm

Where can you get bleed tubes from Brian, are they a special tool or just any bit of tube pointing down into a pot?

If I'd known the above I wouldn't have done it on my Fiesta..
The story so far... http://www.cookracing.co.uk/

Also please help the race budget by watching some videos :) https://www.youtube.com/cookracinguk
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Brianmoooore
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Thu May 10, 2012 11:22 pm

Bleed tube is just a bit of clear plastic tube with a short length of rubber tube pushed over one end, that you push onto the bleed nipple. Nothing special about it. I've probably had mine for over forty years, and have replaced the rubber bit many times and the clear tube a few times.
Any bit of suitably sized pipe will do - the rubber bit just makes it easy to attach to the nipple, and if it's clear, you can see air bubbles flowing down it.
More fancy versions incorporate a one way valve, and are intended for 'one man' brake bleeding.
milescook
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Fri May 11, 2012 1:44 pm

Cheers, will try my local car shop.
The story so far... http://www.cookracing.co.uk/

Also please help the race budget by watching some videos :) https://www.youtube.com/cookracinguk
daimlerman
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Fri May 11, 2012 2:05 pm

Brianmoooore wrote: I've probably had mine for over forty years, and have replaced the rubber bit many times and the clear tube a few times.
Bit like Trigger's brush..... :D
redror
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Fri May 11, 2012 6:06 pm

you will find airline for a fish tank works. cheap as chips from a pet shop, if it doesn't go over the nipple heat it up in some hot water.
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