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Thread: Very odd Grinding noise when braking

  
  1. #1
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    Very odd Grinding noise when braking

    Hi,

    Off the back of my other post regarding my rear springs issue, I've jumped in the Green beast to nip out to get something to eat. Almost imediately when braking a very loud grinding noise came from the rear off side wheel.

    It seemed to ease after a while, but I'm a bit worried that the rear suspension/brake housing is going to collapse.

    I've looked underneath and a good poke around and can't seem to figure out what it is?

    Could it be the rear brake cylinders sticking on for a while until they warm up?

    Thanks in advance.
    What the Frell is Frak?

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    Could be rust on the disk - I get that if there's been heavy rain, could be a bit of grit or loose bit of rust, could be brake pads sticking (i.e. not free moving), could be a pad that's down to the metal, or it could just be a build up of a rim of rust around the outer edge of the disk. Or if you have drums?, I guess it's much the same scenario - probably worth taking the wheel off and investigating.

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    they are drum on the rear, and I do think it could be rust build up.

    Pant filling moment driving it earlier as well.

    Cheers though
    What the Frell is Frak?

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    I had a similar issue. You may have leaky cylinders inside of your drums. Best to remove the wheel and take apart the drum and check the cylinders, make sure they're not leaking oil which can pick up dirt / debris and cause a grinding noise! Use some carb cleaner to remove and oil and that should remove any sounds. Either that or your innder drum pads are on the way out.
    Astra Coupe Bertone 1.8

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    Quote Originally Posted by Entropy View Post
    they are drum on the rear, and I do think it could be rust build up.

    Pant filling moment driving it earlier as well.

    Cheers though
    Rust can build up inside the drum as stated whip them off and go from there.

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    Will do chaps!

    Sat afternoon job I think?

    Will I need a new drum nut once I have taken them off? I remember when I replaced the read drum pads on my 306 I needed a new nut after removal.

    Cheers
    What the Frell is Frak?

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    No you shouldnt need to repalce anything. Mine just came off with a bit of banging from a rubber mallet, went back on fine. When theyre off just clean inside making sure its free of crap. Check the cylinders carefully on either side also! HTH
    Astra Coupe Bertone 1.8

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    Cheers Fella,

    Sat afternoon job I think?
    What the Frell is Frak?

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    Whenever you've got a spare bit of time really, Probs an hour TOPS
    Astra Coupe Bertone 1.8

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    Would the fact that I supposedly have a crack in my rear offside spring have an effect as well?

    Still yet to get this confirmed.
    What the Frell is Frak?

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