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Thread: Brake Pad Knocking

  1. 28th November 2014, 08:58 PM #1
    kailanayacht
    kailanayacht is offline Fossicker Supporter
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    Brake Pad Knocking

    Pistons in front and rear callipers were rusty and have been replaced with stainless. All callipers serviced and new rotors and pads. Basically new brakes all round. $$$$$$. I have now noticed a knocking sound from one of the rear wheels but this stops when brakes are applied. I think it is the new pad rattling around. Brakes work well but very annoying noise. Service tech. Says the new piston seal is holding the piston back slightly and should move forward over time I.e. 10,000km and the noise should then go away??? The pads feel loose in the calliper is this normal? Think might have wrong size pads? Need stronger springs to hold pads away at rest? Any advice before I go crazy with the noise from my new brakes.
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  2. 29th November 2014, 06:44 AM #2
    Ancient Mariner
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    Do the new pads have a rubber backing shim ?
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  3. 29th November 2014, 06:58 AM #3
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    justinc
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    Quite likely caused by the caliper itself worn where the pad sits. If the pistons were that rusty it is a distinct possibility that this is the case, also the guide pin holes in the caliper body for the pad retaining pins may be oval shaped/ worn, and are the springs still on the pins?

    Jc
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  4. 29th November 2014, 08:56 AM #4
    kailanayacht
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    Brake Pad Knocking

    Thanks Ancient Mariner and justinc. Yes the shims are installed and springs are installed on the retaining pins. Calipers have just been acid bath / reconditioned. If it is the calliper that is worn then are my only options 1. buy a new calliper or 2. live with the knock?
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  5. 29th November 2014, 09:52 AM #5
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    justinc
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    The pads should slide in and not rattle around against the caliper sides. My bet is that is why they are knocking. Rear calipers take a hiding with mud, corrosive salty stuff, and so forth. Second hand ones from a late low km puma will bolt straight on, try wreckers etc.

    Jc
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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