"loose" disc brake pads

[Horace Van Khute]

I seem to be having an issue with rear disc brake pads where under braking I can hear them move / shudder as if they were loose whereas the fronts are solid as they were when the bike was new (about 3000 miles ago). The braking action itself is pretty solid on both the fronts and rears.

Before I start acquiring more tools relearning how to work on bikes (these bloody modern bikes are a pain in the ass I tell thee) does this ring any bells to anyone?

[Norgles]

The pads should have a little axle / bolt that runs through the pads and holds them on place. Has this worked loose and fell out?

[Norgles]

Looks like this usually

[Horace Van Khute]

Just checked and everything is in place, pads themselves feel a bit wobbly (compared with fronts). I tightened this small axle thing a bit more and will see. But something tells me I need to get some proper tools to work on this thing eventually.

[Simes205]

Which calipers?
Are the pistons moving?
Is there any meat on the pads?

[Simes205]

Is the disc loose?

[Horace Van Khute]

The disc is rock solid, it's the hub mounted variant.

I don't want to mess with pads without having tools required to reset the suckers, but looking through the gaps they seem to be still ok.

[Simes205]

If the pistons are seized then the pads may rattle.
But the pads should have a spring between them - you may have lost that.

[shouldbworking]

You don't need any special tools to do brake pads, get in there

[Horace Van Khute]

I think in the end that I have possibly slightly bent the disc and that is causing pads to pulse. Have no effing clue how that could have happened since I didn't bump it or anything. Only thing that comes to my mind is them warping from heat. Which is quite poor.

Anyway, I can't be bothered I don't think, I'll just have my LBS deal with it.

[Justin S]

Discs do warp. You straighten them out . Pads do have movement to stop them jamming in the calipers. Try bending the spring out a little between the pads to stop the rattle. It doesnt need a bike shop to resolve.

[Watchman]

Can you see any warping from the disk?

If not, check the tension of your spokes. Fretting noises from disk braked bikes can be caused if the spokes are too lightly tensioned. The hub will flex spokes where they cross over each other leading to a sensation like you have described.

[fredd1e]

Swap the offending pads for new ones . Had the same just recently with my rear pads starting to judder, I suspect they may have got contaminated /glazed and new pads fixed it.