Handbrake Shoes Rubbing?

[jonsowman]

Hi all,

On my D8 there's a fairly loud rubbing/grinding noise at lower speeds, and is definitely correlated with road speed. If I pull the handbrake on slightly the noise disappears.

Can this only be the handbrake shoes, and is there any easy way to check them? Is there anything else I should check?

Cheers

[grasmere59]

I has exactly the same thing on my Exec,it turned out to be the backplate just touching on the disc,i had it also when turning round right hand bends slowly,as you said though it would go away when the handbrake was applied slightly.I jacked the car up at the rear and span the whell and you could hear it rubbing,i reached through the wheel and pushed and pulled at the backplate untill i had forced it into a position where it wouldn't rub.

[jonsowman]

That sounds likely - now you come to mention it, it does seem to happen more when going round corners.

Once you'd given the backplate a shove, did that stop it for good?

I've got no idea about how these drum-in-disc brakes work, servicebox shows this under 'Rear Brakes' which doesn't seem to show the drums:


However the 'Handbrake' section shows the following, which seems to show the drums and shoes but not the discs:

[grasmere59]

It stopped it for a while but i had to change the discs/pads in the near future so i gave the backplates a good derust while everything was apart and it's been fine since,if you look at the diagram of the disc in servicebox and immagine the nose of the disc (where the stud holes are),that is the drum part of the disc if that makes sense.

[steve_earwig]

If you imagine a drum brake with a disk around the outside. It may seem mad but there are lots of cars with this set up, including the Toyoyo, and it can actually work...

Btw guys, yesterday I had the old shoes from my Pug relined with softer material, I can't be asked to change them myself but they'll get done when I get the exhaust fixed, either Friday or Monday, depending when the workshop opens. Watch this space

[jonsowman]

Righto, cheers guys. I'll jack it up when I have time and find out which wheel it is, then poke the backplate until it shuts up.

It hasn't had the shoes done in quite a while so I'll do that at some point, and clean up the backplates whilst I'm at it.

In the meantime, is it doing any harm as it stands?

[Doggy]

Maybe, maybe not.....
A cautionary tale: viewtopic.php?f=27&t=13560&hilit=noise+from+brakes

[jonsowman]

Ta Doggy, that looks like a complete pain of a job! I'm happy giving some things a go but that looks a bit beyond me. Also I'm entirely unqualified to be messing around with brakes so I think I'd better leave that to someone who knows what they're doing.

Because it goes away when the handbrake is on, I guess it's either the backplate or the shoe friction material detaching. I'll jack it up when I have time to figure out which wheel it is, and have the rear shoes changed as soon as possible.

If there's not too much wear on the rear discs, is there any point changing the discs as well as the shoes?

[Doggy]

If there's not too much wear on the rear discs, is there any point changing the discs as well as the shoes?

Probably not. I did it because I knew I needed to change the front discs, all the pads and probably the shoes, so it made sense to get a complete set of everything and be as sure as you can be that you'll eliminate the problem.

[gumby6371]

Mine is a standard drum set up on the back but both my D8's have suffered from sticky handbrake cables on the drivers side wheel causing binding.
Might be worth a check as it's easy to spot by watching the cable when the hand brake is applied and released as the outer sleeve moves with the inner cable when it's sticking. Both of mine have had wear marks on the outer sleeve where they've rubbed against the retaining bracket/hook.
Like I said that's on a straight drum set up but I would imagine it can still happen on a disc/drum set up as well and takes about 5 seconds to check.

[jonsowman]

Thanks guys, will have a look at the cables as well. It happens very rarely at the moment and I've not got time to investigate for a few weeks, so fingers crossed it doesn't get any worse for now.

The "worse when going round corners" thing makes me think it's the backplate rather than the shoes falling apart, but that's just a guess really.