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Thread: throw out fork helper spring ?

  1. 12-13-2020, 11:55 AM #1
    typ901
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    throw out fork helper spring ?

    seems these disappeared around '69 - '69. what was the original concern ?
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    84102 purchased in '85 FINALLY started driving it (2/2015)
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    3 gauge Holbert 912... now for something completely different
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  2. 12-13-2020, 12:02 PM #2
    edmayo
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    to take pressure off the throwout bearing.
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  3. 12-13-2020, 12:20 PM #3
    typ901
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    thanks Ed... sounds logical... then why delete it ?
    84102 purchased in '85 FINALLY started driving it (2/2015)
    '73 911T original paint sunroof coupe waiting in the wings
    3 gauge Holbert 912... now for something completely different
    1940 Mercury town sedan
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  4. 12-13-2020, 12:42 PM #4
    Jim Breazeale
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    Quote Originally Posted by typ901 View Post
    thanks Ed... sounds logical... then why delete it ?
    Actually, they disappeared in 1967.

    Jim
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  5. 12-13-2020, 01:12 PM #5
    typ901
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    just another example of over engineering ?
    84102 purchased in '85 FINALLY started driving it (2/2015)
    '73 911T original paint sunroof coupe waiting in the wings
    3 gauge Holbert 912... now for something completely different
    1940 Mercury town sedan
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  6. 12-13-2020, 05:54 PM #6
    Richy
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    Improved clutch release bearing .
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  7. 12-13-2020, 09:27 PM #7
    Jon B
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    Quote Originally Posted by typ901 View Post
    seems these disappeared around '69 - '69. what was the original concern ?
    From the Workshop Manual, page R 59...

    Commencing with the introduction of the modified clutch release with live throwout bearing,
    the return spring, Part Nr. 901.116.731.01, is no longer in use.

    The new throwout bearing, Part Nr. 901.116.081.11, is being installed commencing with the below shown dates:

    Vehicle Type 911 S ..................... from production beginning
    Vehicle Type 911 ........................ from 12. Jan. 1967
    Vehicle Type 912 ........................ from 12. Jan. 1967

    Jon B.
    Vista, CA
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