Brake caliper piston seals?

[ac3_snow]

I am wanting to change the brake seals on a caliper today. When looking at the seals they are not a perfect square, one side is fatter than the other, a bit like this pic.

275040

Now what I can't remember is does the thicker side of the seal sit so it is closer to the brake pads or does it sit so it is on the inside side of the caliper.
Or does it not make a difference?

[ducatilover]

Which way does it fit best? :yes:

[Katman]

I'm fairly certain you'll find that they are (or at least started life as) square cross sectional.

[unstuck]

Should look like this. http://www.wemoto.com/bikes/honda/cbr_250_rrl_rrn_rrr_mc22_japan/90-94/picture/piston_seal_and_dust_seal_front_brake/. If indeed it is a mc22.:yes:

[gammaguy]

I am wanting to change the brake seals on a caliper today. When looking at the seals they are not a perfect square, one side is fatter than the other, a bit like this pic.

275040

Now what I can't remember is does the thicker side of the seal sit so it is closer to the brake pads or does it sit so it is on the inside side of the caliper.
Or does it not make a difference?

just put them back any old way

whats the worst that could happen?:gob:

[FJRider]

I am wanting to change the brake seals on a caliper today. When looking at the seals they are not a perfect square, one side is fatter than the other, a bit like this pic.

Now what I can't remember is does the thicker side of the seal sit so it is closer to the brake pads or does it sit so it is on the inside side of the caliper.
Or does it not make a difference?

If you buy new ... I'm sure they will come in a sealed pack ..... :yawn:

As they should be fitted. (not inside out to confuse you) ...:pinch:

[Coolz]

They are meant to be tappered and it is important to put them in the right way.
It has something to do with drawing the piston back when you let off the pressure. A brake specialist pointed this out to me last time I bought parts.

Can't remember which way they were supposed go,it was a while ago.

[Coolz]

I further recollect it being explained to me that the piston does not slide through the seal, but the seal twists and it is this elasticity that releases the brakes.

The old guy in Lamberts brake and clutch specialists in Whangarei told me all this. He was a Knowledgeable fellow and spent ten minutes making sure I got the right parts and I knew what I was Doing . Give him a ring if you can't work it out.

Brakes are to important to get it wrong.

[Drew]

I am no less convinced by this thread, that some people shouldn't be allowed tools.

[gammaguy]

I am no less convinced by this thread, that some people shouldn't be allowed tools.

word

it is no small coincidence that tools rhyme with fools

[ducatilover]

I am no less convinced by this thread, that some people shouldn't be allowed tools.
I have lots of tools.

It's probably a bad thing.

People pay me to play with tools too (take that however you will) :2thumbsup

[ac3_snow]

I am no less convinced by this thread, that some people shouldn't be allowed tools.


word

it is no small coincidence that tools rhyme with fools


If it is such a stupid question, then why does it seem you are incapable of providing what should be a fairly straight forward answer?



I further recollect it being explained to me that the piston does not slide through the seal, but the seal twists and it is this elasticity that releases the brakes.

The old guy in Lamberts brake and clutch specialists in Whangarei told me all this. He was a Knowledgeable fellow and spent ten minutes making sure I got the right parts and I knew what I was Doing . Give him a ring if you can't work it out.

Brakes are to important to get it wrong.


Cheers, I did read the comments along those lines in the other thread.

[Drew]

I didn't say the question was stupid, and I haven't offered a difficult explanation.

[schrodingers cat]

I have lots of tools.

It's probably a bad thing.

People pay me to play with tools too (take that however you will) :2thumbsup

Me too.
But there are certain things where I realise I am out of my depth.
Furthermore, the last place I'd ask for advice would be on here.