DS rear drum brakes overhaul;---questions.
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  1. #1
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    Jan 2005
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    Default DS rear drum brakes overhaul;---questions.

    My 1974 D Special which I have owned and enjoyed for some 30 years has started to leak hydraulic fluid from the rear drum brake cylinders. I have found a source for these as complete units along with new shoes/friction surfaces.
    The drums are of the stated internal diameter (255 mm) but do have some scoring lines; about a millimeter deep. My question is;- can I have the drums lightly machined to take out the scoring and what maximum internal diameter of the drum is allowable?
    I would be grateful to hear from anyone else who has gone down this track.
    If possible I would like to avoid sourcing new drums from overseas (if indeed they are even available) due to the weight factor and the effect on freight/postage costs. Many thanks, Diaron.

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  2. #2
    Real cars have hydraulics DoubleChevron's Avatar
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    I'm easy, I'd repair the boot and just clean the existing linings and re-assemble. The back of CX's and DS's seem to do bugger all work. If its anything like a CX it'll still wear its original brake pads back there
    'Cit' homepage:
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  3. #3
    Fellow Frogger!
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    Manual 814 has the drums at 255mm original diameter with a maximum regrind on diameter of 2mm

  4. #4
    Fellow Frogger
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    The wheel cylinders probably only need new O-rings. Take them apart, clean and inspect. You can often clean linings reasonably well and put them back in. The rear brakes last a long time on a DS, so if they are 30+yo linings they are likely asbestos and you need to be mindful of that.

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