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Techs; Mike, Steve, Mark - Is this Cam Seal Seat scored enough to require adhesive / sealant on a new seal installation? 850

posted by  bhs82 on  Sat May 7 11:13 CST 2005
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last visit: Tue Dec 7 10:15 CST 2010
[RELATED]

Any pros, experts, please weigh in with your opinions;
I am about to install a new front exhaust cam oil seal, and would like to know (best as you can tell from these pictures) if this "seat" is scored significantly enough to require an additional adhesive or sealant application.

I am concerned that without using some kind of adhesive, the new seal will leak if the scoring is too severe. A N D IF I should use some sort of sealant or adhesive... WHAT should I use; Threadlocker? Gasket Maker? etc.

Several days ago I encountered a problem getting my front exhaust cam oil seal removed, and then posted a thread here.

Basically, I concluded that the last person who installed the seal must have used some sort of adhesive because what I encountered was particularly rare and difficult. The old seal would only come off in pieces by being scraped off with picks and small screw drivers. I did my best to minimize any scoring of the surfaces, being more particular with the cam shaft, knowing that I too could use an adhesive around the "seat" if necessary (keeping in mind the camshaft will need to rotate within the seal, while the seal to seat surface will remain stationary and could conceivably be "glued").

Naturally, I would rather not use any sealant because getting this last one off was a bear! I could always go without, and then if it leaks, go back in and use a new seal and sealant then, but if it is clear to any of you that this WILL leak absent sealant, I would go ahead and use some as you would prescribe now.

Thanx for your time and input... I will follow this with other pics

Click here for a larger image.
--
1995 850T Wagon 120k









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    Techs; Mike, Steve, Mark - Is this Cam Seal Seat scored enough to require adhesive / sealant on a new seal installation? 850

    posted by  someone claiming to be Dick on  Mon May 9 02:34 CST 2005 [RELATED]

    All the damage looks to be to the shoulder of the cam, not on the inside seal surface which is where the oil would seep past. Hard to tell, though. If you haven't scored the inside surface you shouldn't have a problem. It's all cosmetics. If you scored the surface of the cam itself it would eat through the thin little rubber edge of the seal. I would go with Klaus's recommendation, though, just to be safe. Dick








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    Techs; Mike, Steve, Mark - Is this Cam Seal Seat scored enough to require adhesive / sealant on a new seal installation? 850

    posted by  bhs82 on  Sat May 7 11:16 CST 2005
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    last visit: Tue Dec 7 10:15 CST 2010
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    In case you were wondering; This perspective is looking straight down from over the engine, and using a mirror at a 45 degree angle to give you a dead-on, but upside down image.


    Click here for a larger image.
    --
    1995 850T Wagon 120k









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      Techs; Mike, Steve, Mark - Is this Cam Seal Seat scored enough to require adhesive / sealant on a new seal installation? 850

      posted by  bhs82 on  Sat May 7 11:17 CST 2005
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      last visit: Tue Dec 7 10:15 CST 2010
      [RELATED]

      Click here for a larger image.
      --
      1995 850T Wagon 120k









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        Techs; Mike, Steve, Mark - Is this Cam Seal Seat scored enough to require adhesive / sealant on a new seal installation? 850

        posted by  KlausC on  Sat May 7 13:47 CST 2005
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        last visit: Fri Oct 24 10:15 CST 2014
        [RELATED]

        That is a real mess between 6 and 9 o'clock. Looks like most of the metal is gone and your standaard seal will not hold back the oil. PO really did a number.
        You will have to add a sealant to the outside edge only, that will hold your seal in place as well as keep the oil inside. Use care.
        Good job getting the old one out without additional damage. The picks and your patience worked,

        Klaus
        --
        98 V70Rawd(108Kmi), 95 854T(88K mi), 75 164E(173K mi)








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          Techs; Mike, Steve, Mark - Is this Cam Seal Seat scored enough to require adhesive / sealant on a new seal installation? 850

          posted by  bhs82 on  Sat May 7 13:57 CST 2005
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          last visit: Tue Dec 7 10:15 CST 2010
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          Klaus,

          What kind of sealant???

          Threadlocker?
          Gasket Maker?
          --
          1995 850T Wagon 120k








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            sealant on a new seal installation? 850

            posted by  KlausC on  Sat May 7 15:19 CST 2005
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            last visit: Fri Oct 24 10:15 CST 2014
            [RELATED]

            Ipersonally would use a gasket maker. It will be easier to work with and will allow the new gasket to seal properly. Be very careful not to get any inside of the raised metal portion of the picture. Try to let it almost dry and then put in your new gasket, 12 o'clock to 3 o'clock first. That way if any seeps out, it will be to the outside.

            Make sure everything dries before starting up the car. Then have fun. Watch it closely for a few days, then forget about it until your next oil change.

            Good luck,

            Klaus
            --
            98 V70Rawd(108Kmi), 95 854T(88K mi), 75 164E(173K mi)








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              sealant on a new seal installation? 850

              posted by  Rule 308 on  Sat May 7 15:50 CST 2005
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              last visit: Tue May 8 09:20 CST 2012
              [RELATED]

              Kent,
              Everything Klaus just said, it is all solid advice, and use Permatex aviation or high tack sealant in exactly the method he outlined. Good job getting that beast out of there and let's hope to god you never have to pull the next set out because either one of those sealants are real close to permanent.

              Mark







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