Squawking noise from back brake

[N Dentressangle]

I have a horrid noise from my back brake, as if a goose is attached. I've been through some possible causes on the CB500 forum:

http://groups.msn.com/CB500CLUB/workshoptech.msnw?...

Any of you guys have a magic bullet before the horrid thing goes in the paper? Yes, it is that awful!

Happy to try anything not already suggested. I'm coming to the limit of my patience.

[rumpelstiltskin]

First check for a goose,if there isn't one present then when the back whell is raised check for side to side play in the wheel bearing.If a bearing is knackered it will put sideway pressure on your disc,and may eventually damage the disc,had this bother with the front of my TL,every few revolutions there would be a noise from the disc,bearings had damaged the bobbins on my disc.Oh,and check wheel alignment too,look at the markings on either side of the swinging arm that they are at the same mark.

[N Dentressangle]

Thanks - definitely no goose present.

Wheel is aligned correctly - checked and adjusted today.

There's a small amount of play in the wheel bearing, but I'm not sure how this could cause the symptoms? Check out the CB500 board link if you have a min - it'll tell you everything I've tried and failed with so far.

[bimsb6]

if there is a small amount of play they are knackered ,there should be no play .

[bimsb6]

drum or disc rear ?

[m3psm]

Are you missing an anti-squeal plate from behind the pads? A quick check with Honda will tell you if there should be any.

Other than that, have you tried using brake cleaner on the disc and pads. That's grasping at straws, but a bit of crap on either could cause a squeal.

Other than that, strip everything down, remove the disc, clean, grease and re-assemble.

[Busamav]

check you havent got a stone etc tarred itself onto the inside of a hugger or a chain guard

[N Dentressangle]

m3psm said:

Are you missing an anti-squeal plate from behind the pads? A quick check with Honda will tell you if there should be any.

Other than that, have you tried using brake cleaner on the disc and pads. That's grasping at straws, but a bit of crap on either could cause a squeal.

Other than that, strip everything down, remove the disc, clean, grease and re-assemble.

All done, I'm afraid. No stones sticking anywhere either. Whole thing blasted with brake cleaner twice now, and stripped down half a dozen times.

It's a 2000 disc brake CB500, if that helps...

Can some pads just not "get on" with the disc? :desperate smilie:

[m3psm]

N Dentressangle said:

Can some pads just not "get on" with the disc? :desperate smilie:

For the price of a set of pads it's got to be worth a try.

Also, some "sporty" pads squeal until hot, so it may be worth trying a different brand.

[Hyperion]

Cheap pads - had exactly the same problem with my Divvi. I changed to some decent ones and not had the noise since.

[telecat]

This can also be caused by a slight Brake fluid leak thru the seals onto the pads and disk. Getting the seals replaced would sort that out.

[N Dentressangle]

Thanks guys - I'll try some Honda pads in it tomorrow.

[Nickccc]

Check the caliper bolts, I had this with my duke, was a loose bolt allowing the caliper to start vibrating when biting.

[N Dentressangle]

Nickccc said:

Check the caliper bolts, I had this with my duke, was a loose bolt allowing the caliper to start vibrating when biting.

Good thought. Caliper runs on sliders though, and just floats. So no bolts.

However, you did set me thinking. Looking at the exploded diagram in the Haynes, I am missing a pad retaining spring and plate. My wonderful, charming and ever helpful local Honda dealer want £22.80 for this small piece of sprung steel.

Bikes are cheap to run, right?

[telecat]

N Dentressangle said:

Nickccc said:

Check the caliper bolts, I had this with my duke, was a loose bolt allowing the caliper to start vibrating when biting.

Good thought. Caliper runs on sliders though, and just floats. So no bolts.

However, you did set me thinking. Looking at the exploded diagram in the Haynes, I am missing a pad retaining spring and plate. My wonderful, charming and ever helpful local Honda dealer want £22.80 for this small piece of sprung steel.

Bikes are cheap to run, right?

You are kidding right?? The parts are more expensive.

[N Dentressangle]

telecat said:

N Dentressangle said:

Nickccc said:

Check the caliper bolts, I had this with my duke, was a loose bolt allowing the caliper to start vibrating when biting.

Good thought. Caliper runs on sliders though, and just floats. So no bolts.

However, you did set me thinking. Looking at the exploded diagram in the Haynes, I am missing a pad retaining spring and plate. My wonderful, charming and ever helpful local Honda dealer want £22.80 for this small piece of sprung steel.

Bikes are cheap to run, right?

You are kidding right?? The parts are more expensive.

It was a jokey reference to this thread.

I've generally found bikes to hoover up money and be a total PITA to sort out compared with cars. This one's a case in point.

[RizzoTheRat]

On an older bike keep an eye on e-bay, find someone selling a caliper with a sheared bleed nipple or other damage for next to nothing.