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Thread: Rear Main Oil Seal Removal ~

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  1. #1
    John D'oh
    Join Date
    Aug 2006
    Location
    Close to Fort Worth Texas
    Posts
    464

    Rear Main Oil Seal Removal ~

    I believe that folks are making more of a job out of this than is necessary. I had planned to disassemble an engine for some parts and finally got a chance to photograph the technique. Here in photographs is how I remove a rear main oil seal from the engine case of, in this case, a 1978 R100/7. Notice that the bottom lip of the seal is black from oil leaking past it and, the outside edge of the seal is even with the engine case. The seal is an original factory plastic seal correct for 1978 which has probably not been replaced before this.

    First photo is the seal in place: Note oil on lip and seal position in case.
    Last edited by Na Cl K9; 08-08-2012 at 04:05 PM.
    John D'oh

  2. #2
    John D'oh
    Join Date
    Aug 2006
    Location
    Close to Fort Worth Texas
    Posts
    464
    Special Tool...installed~
    Last edited by Na Cl K9; 08-08-2012 at 04:05 PM.
    John D'oh

  3. #3
    John D'oh
    Join Date
    Aug 2006
    Location
    Close to Fort Worth Texas
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    464
    Give special tool a twist~
    Last edited by Na Cl K9; 08-08-2012 at 04:05 PM.
    John D'oh

  4. #4
    John D'oh
    Join Date
    Aug 2006
    Location
    Close to Fort Worth Texas
    Posts
    464
    Grip tight and twist hard left or right~
    Last edited by Na Cl K9; 08-08-2012 at 04:05 PM.
    John D'oh

  5. #5
    John D'oh
    Join Date
    Aug 2006
    Location
    Close to Fort Worth Texas
    Posts
    464
    Job is done. Install new rear main seal.
    Last edited by Na Cl K9; 08-08-2012 at 04:05 PM.
    John D'oh

  6. #6
    Registered User donbmw's Avatar
    Join Date
    Feb 2004
    Location
    Monroe La.
    Posts
    431
    Quote Originally Posted by s09rwmb View Post
    Job is done. Install new rear main seal.
    I hope you block the crackshaft before doing this.

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