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Thread: S-Caliper Restoration Step by Step

  1. 03-20-2008, 07:17 AM #31
    ThomasTe
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    Quote Originally Posted by Neunelfer
    Did I mention the compensating lines? Make sure you are very careful in their removal. They are extremely expensive (for what they are) and have to be ordered from Porsche...
    What are the part numbers for the compensating lines?


    Quote Originally Posted by Neunelfer
    About knockback mechanisms; Years back, I spoke with an engineer at ATE regarding those funny pins and gadgets in our calipers. He referred to them as "knockback mechanisms" and stated that they no longer use them. The basic design principle was to literally knock the piston back out toward the rotor to help acheive a high pedal feel. There you have it, it's that simple. If I find the PDF's he sent me I'll post them here.
    Did the PDF´s ever turn up? I would love a copy of those and/or to know more about these peculiar devices. Quite frankly I can´t see how they are supposed to have the effect mentioned above.
    Thomas
    1973 911S Targa
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  2. 03-25-2008, 02:14 PM #32
    69S-S/R
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    Smile Eric in Sandy, Utah

    Eric, please contact me off line at tomlynns@aol.com re. restoration of 1969 S calipers.
    Thanks,
    Tom Scott
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  3. 03-25-2008, 11:18 PM #33
    Neunelfer
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    What are the part numbers for the compensating lines?
    901 351 991 00 and 992 00

    No luck on the pdf's. The discs and spring inside the mechanism grabs the pin in the caliper and forces the piston back out.

    Tom... you have mail.
    Eric - Sandy, Utah
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  4. 03-26-2008, 05:40 AM #34
    ThomasTe
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    Thumbs up

    Thank you, Eric!
    Thomas
    1973 911S Targa
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