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Thread: Aluminum S brake question

  1. #1
    Senior Member michaelaiellosr's Avatar
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    Aluminum S brake question

    There is a tiny tube like bushing that fits around the pin in this photo. It was either missing or disappeared when I disassembled the caliper for a rebuild. Does anyone know where I might be able to buy another one?

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  2. #2

  3. #3
    If you struggle to find any they are reasonably easy to make.

    They are a very slight interference fit into the steel bush that is attached to the back of the piston with a snap ring.

    They press-in and the groove helps keep them in place.

    They are a very slight clearance on the pin in the caliper body.


  4. #4
    Senior Member michaelaiellosr's Avatar
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    Thanks for the info....but what purpose does this "anti-knock bush" serve ? Seems to be over engineered, or am I wrong? When I took the calipers apart,the retaining rings were loose and hanging on to the lower pin where it was pressed into the casting. The other question I have involves the rebuild kit for these calipers. The kit comes with the 2 dust covers , but only 2 seals...there are 3 seals in each caliper. Any explanation?

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  5. #5
    member #1515
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    Without the bushing the pads get knocked back from the disc and you get long pedal travel before the brake engages with the disc. Not a pleasant feeling when you need the brakes instantly.
    David

    '73 S Targa #0830 2.7 MFI rebuilt to RS specs

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