Brake piston removal

These are curvy front brake, it has been taken off for rebuild.

I'm wondering how the pistons can be removed without expensive special tools.

cheers,

Lucas

Originally Posted by Lucas

These are curvy front brake, it has been taken off for rebuild.

I'm wondering how the pistons can be removed without expensive special tools.

cheers,

Lucas

Connect them back to the brake hose and squeeze the brake lever until they pop out ? ...

Alternatively connect the brake calliper to an air compressor and let the pressure do the work for you

Originally Posted by martianskippy

Alternatively connect the brake calliper to an air compressor and let the pressure do the work for you

cheers, but I don't have a compressor.

I tend to use a thick rag or T-shirt folded over a few times (so to not score the piston at all) and clamp and pull with a set of Mole grips.

There is probably a better safer way than this though. I know nothing.

Originally Posted by plowsie

I tend to use a thick rag or T-shirt folded over a few times (so to not score the piston at all) and clamp and pull with a set of Mole grips.

There is probably a better safer way than this though. I know nothing.

I did it like this on my gsxr calipers but was careful. I'm sure it's not the proper way to do it but no harm was caused.

Nick

[maviczap]

These aren't too expensive are they?

http://cgi.ebay.co.uk/Motorcycle-Bra...item25557c88a3

[punyXpress]

+ 1 the first line of martianskippy's reply, but DON'T use air!
If the piston is really stuck, when it finally lets go under air pressure it will literally be a missile. Hydraulic is far safer.

Originally Posted by maviczap

These aren't too expensive are they?

http://cgi.ebay.co.uk/Motorcycle-Bra...item25557c88a3

seems good, it's the first time I believe the claim of 'added pulling power'

£18 is not a lot, but it'll be a tool used once in a few years if that...

i'll give the mole grips a careful try first.

thanks everyone for the tips.

lucas

Originally Posted by Bunks

I did it like this on my gsxr calipers but was careful. I'm sure it's not the proper way to do it but no harm was caused.

Nick

I would be afraid that the piston could get deformed this way, even though no scouring can be observed..

I think using the hydraulic pressure of your brake system is the safest and easiest way forward - you don't need any additional tools and you can be 100% sure you don't damage the piston in any way.

Anyways, I know nothing so please feel free to disregard my posts in this thread

[Dave20046]

Both the molegrips & compressor ways are a bit risky, I had to do this on friday night and just did it the hydrolic way.

The tools unnecesary unless you rebuild calipers that aren't attached to a bike often. Takes literally 10 minutes to put the calipers on a bike, bleed up and pop out.