Blocfor washers
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Thread: Blocfor washers

  1. #1
    Fellow Frogger! Uffee's Avatar
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    Default Blocfor washers

    The 504 workshop manual refers to Blocfor washers when re-fitting the diff to the torque tube.

    What're them then?

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  2. #2
    1000+ Posts BIGRR's Avatar
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    Default Spring washer

    Google it.
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  3. #3
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by BIGRR View Post
    Google it.
    Tried that.
    504 GL Coupe '73 Silver
    504 GTDT Pickup Mini-Motorhome '83 Coral Red
    407 HDi Sedan '05

  4. #4
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by Uffee View Post
    The 504 workshop manual refers to Blocfor washers when re-fitting the diff to the torque tube.

    What're them then?

    Blocfor washers are a kind of lock washer. They resemble a thin flat washer with "convex wave" shape pressed into load faces.

    Their first cousin is a belville washer.

    Blocfor washers are used as lock washer when the nut is under a lot of tension.

    They are also used on the gearbox casing bolts and studs of BA 7-4.

  5. #5
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by robmac View Post
    Blocfor washers are a kind of lock washer...
    Thanks for that.

    You wouldn't happen to know what Onduflex washer are as well?
    504 GL Coupe '73 Silver
    504 GTDT Pickup Mini-Motorhome '83 Coral Red
    407 HDi Sedan '05

  6. #6
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by Uffee View Post
    Thanks for that.

    You wouldn't happen to know what Onduflex washer are as well?
    As you were.

    It appears my description is of a onduflex washer
    http://www.infastech.co.kr/acument/p...lexlocking.pdf

    Back to the drawing board for blocfor washer, which if it's the washer that goes under the torque tube fixings, is a meaty spring washer.

    Funny people these French.

    Edit: I wonder if it's one of the weird inside/ outside serrated washers? My memory of 504s is fading...

  7. #7
    Fellow Frogger! Uffee's Avatar
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    Quote Originally Posted by robmac View Post
    Back to the drawing board for blocfor washer, which if it's the washer that goes under the torque tube fixings, is a meaty spring washer.
    I got that impression from the context but couldn't find any links that confirmed blocfors and spring washers were the same/similar.
    504 GL Coupe '73 Silver
    504 GTDT Pickup Mini-Motorhome '83 Coral Red
    407 HDi Sedan '05

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