jamed diskbrake

Roger Merriman said:

looks like a shop job, i have a mountain bike that i'm bringing to my
new home which the calipers are not moving back fully thus the brake is
on.

i've taken the wheel off and checked for anything jaming it, which i
can't see, any ideas if not when i get back i'll carry it to the bike
shop who seem a good lot.

What make / model of disc brakes?
My Hope Minis have done this occasionally, I fixed it by removing the
brake pads, and pushing the pistons back hard into place.
You might need to push them rather hard, I find the flat end of a tyre
lever is useful for this.

--
Craig Wallace
http://craig.neogeo.org.uk
http://www.neogeo.org.uk

Roger Merriman said the following on 20/02/2007 14:52:

Quoted message said:

looks like a shop job, i have a mountain bike that i'm bringing to my
new home which the calipers are not moving back fully thus the brake is
on.

A bit more info needed, I think. Are they cable or hydraulic? Is it
one pad "locked" against the disc or both? Preferably make/model of
brakes if you know it.

There are various solutions depending on the answers to the above!

--
Paul Boyd
http://www.paul-boyd.co.uk/

Craig Wallace craigw84@fast_NOSPAM_mail.fm said:

Roger Merriman said:

looks like a shop job, i have a mountain bike that i'm bringing to my
new home which the calipers are not moving back fully thus the brake is
on.

i've taken the wheel off and checked for anything jaming it, which i
can't see, any ideas if not when i get back i'll carry it to the bike
shop who seem a good lot.

What make / model of disc brakes?
My Hope Minis have done this occasionally, I fixed it by removing the
brake pads, and pushing the pistons back hard into place.
You might need to push them rather hard, I find the flat end of a tyre
lever is useful for this.

MPH apparently didn't notice a model number, hydrolic. probably fairly
cheap, though they until now worked very well.

i'll take some suitble tools i can find to lever them open if they will
budge.

Paul Boyd usenet.dont.work@plusnet said:

Roger Merriman said the following on 20/02/2007 14:52:

Quoted message said:

looks like a shop job, i have a mountain bike that i'm bringing to my
new home which the calipers are not moving back fully thus the brake is
on.

A bit more info needed, I think. Are they cable or hydraulic? Is it
one pad "locked" against the disc or both? Preferably make/model of
brakes if you know it.

Hydraulic disks MPH on the caliper.

Quoted message said:

There are various solutions depending on the answers to the above!

both pistons on the rear caliper are out and can be seen as aposed to
the front. i'll see if i can shift them tomorrow if not i'll take them
to some one who knows what they are doing!

it i suspect is going to be very handy having a bike shop with in easy
walking distance.

roger

Roger Merriman said the following on 20/02/2007 17:39:

Quoted message said:

MPH apparently didn't notice a model number, hydrolic. probably fairly
cheap, though they until now worked very well.

Assuming they have opposing pistons (I think some hydraulics don't), it
might be worth taking the wheel and pads out and *carefully* squeezing
the lever to expose more piston, then push them back in. If one piston
is reluctant to come out, hold the other piston in with a tyre lever or
whatever whilst working the brake lever. Repeat a few times. You don't
want the pistons to pop out though. It can also be worth smearing a
*very* small amount of hydraulic fluid (make sure it's the same type as
your brakes use) over the exposed pistons to help lubricate the seals.

If you're not at all sure though, go to a bike shop! Brakes are kind of
important to be working correctly :-)

--
Paul Boyd
http://www.paul-boyd.co.uk/

Paul Boyd usenet.dont.work@plusnet said:

Roger Merriman said the following on 20/02/2007 17:39:

Quoted message said:

MPH apparently didn't notice a model number, hydrolic. probably fairly
cheap, though they until now worked very well.

Assuming they have opposing pistons (I think some hydraulics don't), it
might be worth taking the wheel and pads out and *carefully* squeezing
the lever to expose more piston, then push them back in. If one piston
is reluctant to come out, hold the other piston in with a tyre lever or
whatever whilst working the brake lever. Repeat a few times. You don't
want the pistons to pop out though. It can also be worth smearing a
*very* small amount of hydraulic fluid (make sure it's the same type as
your brakes use) over the exposed pistons to help lubricate the seals.

If you're not at all sure though, go to a bike shop! Brakes are kind of
important to be working correctly :-)

quite it needs a service any way and its no trouble to carry it there.
bit of a bugger though as i had wanted to give it a bounce down though
the gorge ah well.

roger

In article <[email hidden]>, Paul
Boyd
usenet.dont.work@plusnet says...

Quoted message said:

It can also be worth smearing a
*very* small amount of hydraulic fluid (make sure it's the same type as
your brakes use) over the exposed pistons to help lubricate the seals.

Seconded - that can make all the difference.

Roger Merriman said:

looks like a shop job, i have a mountain bike that i'm bringing to my
new home which the calipers are not moving back fully thus the brake is
on.

i've taken the wheel off and checked for anything jaming it, which i
can't see, any ideas if not when i get back i'll carry it to the bike
shop who seem a good lot.

Maybe undo the reservoir cap and let a small amount of fluid out. I
think I remember someone else saying that fixed a similar problem.

"Roger Merriman" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Craig Wallace craigw84@fast_NOSPAM_mail.fm said:

Roger Merriman said:

looks like a shop job, i have a mountain bike that i'm bringing to my
new home which the calipers are not moving back fully thus the brake is
on.

i've taken the wheel off and checked for anything jaming it, which i
can't see, any ideas if not when i get back i'll carry it to the bike
shop who seem a good lot.

What make / model of disc brakes?
My Hope Minis have done this occasionally, I fixed it by removing the
brake pads, and pushing the pistons back hard into place.
You might need to push them rather hard, I find the flat end of a tyre
lever is useful for this.

MPH apparently didn't notice a model number, hydrolic. probably fairly
cheap, though they until now worked very well.

i'll take some suitble tools i can find to lever them open if they will
budge.

IIRC MPH are Giant's copies of hayes brakes.

Rob Morley said:

In article <[email hidden]>, Paul
Boyd
usenet.dont.work@plusnet says...

Quoted message said:

It can also be worth smearing a
*very* small amount of hydraulic fluid (make sure it's the same type as
your brakes use) over the exposed pistons to help lubricate the seals.

Seconded - that can make all the difference.

cheers all but as time was rather lacking i'll be driving back with two
bikes and asorted old computers and other such junk, thus i shall carry
the bikes to the local bike shop and get them to fettel brakes and other
things.

roger

Doki said:

"Roger Merriman" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Craig Wallace craigw84@fast_NOSPAM_mail.fm said:

Roger Merriman wrote:
> looks like a shop job, i have a mountain bike that i'm bringing to my
> new home which the calipers are not moving back fully thus the brake is
> on.
>
> i've taken the wheel off and checked for anything jaming it, which i
> can't see, any ideas if not when i get back i'll carry it to the bike
> shop who seem a good lot.

What make / model of disc brakes?
My Hope Minis have done this occasionally, I fixed it by removing the
brake pads, and pushing the pistons back hard into place.
You might need to push them rather hard, I find the flat end of a tyre
lever is useful for this.

MPH apparently didn't notice a model number, hydrolic. probably fairly
cheap, though they until now worked very well.

i'll take some suitble tools i can find to lever them open if they will
budge.

IIRC MPH are Giant's copies of hayes brakes.

ahh that would make sence as its a Giant bike!

cheers.

roger