SOHC.co.uk Forums > CB500/550

Brake caliper

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totty:
Hi,

The Haynes manual says that it should be possible to push the piston back in easily by hand, is this correct?
I can't budge mine by hand, but I'm more used to working on cars and generally having to use a bit of force/leverage to push the pistons back so this seems normal to me.
I've also found cracks in the hose so it'll have to be replaced.

Cheers

Allan

matthewmosse:
I give the thing a damn good scrub with a toothbrush and then some coppa slip, then push it back in with a g cramp, often I'll push it back in and out a few times to free things off a bit (winter riding not nice to calipers) As for brake hoses I get stainless braided hoses from Custom Fastners and replace the whole lot. Having said that I now have the odds to re make the steel lower pipe with nice shiny copper so I might have a go at that next time I'm bike playing.

totty:
I've got braided hoses on order, Earls from M&P.
Also just been out and bought a G clamp. Am I right in thinking that if it doesn't free off enough to move by hand I'll need a new piston and seal to rebuild it?

Cheers

Allan

Bryanj:
The usual problem is a build up of special additive (SH*TE) in the seal groove behind the seal, Seal is cheap (

totty:
In that case if it doesn't free up I'll pop the piston out and look for pitting before ordering anything.

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