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  1. #1
    Myself's Avatar
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    fuji 650/750 crank seal orientaion

    Does anybody have a pic that shows which way the seals install? I thought I had it right but when I started tightening the case halves, the rearmost PTO seal (no lip) pushed out backwards???


  2. #2
    BlueFishCrisis's Avatar
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    Quote Originally Posted by Myself View Post
    Does anybody have a pic that shows which way the seals install? I thought I had it right but when I started tightening the case halves, the rearmost PTO seal (no lip) pushed out backwards???
    That's the odd one. The orientation is correct. I have found that with a good amount of 1211 on it, you actually need to keep re-setting the seal back into place maybe 2-3 times after the cases are tightened. I believe a positive pressure actually builds between the two seals as they are compressed into place causing the outer to move out.

  3. #3
    Myself's Avatar
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    Maybe pressure is building. I'll slip a paperclip in there to relieve air pressure through the lip seal maybe.

  4. #4
    Myself's Avatar
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    Seal was too tight to stick a paperclip or something through. Just went ahead and put it together then used a bar clamp to hold the seal in place until the Threebond sets. Also used a punch and dimpled a few places around the case to help retain the seal. I didn't have any trouble like this on the last 650 I did.

  5. #5
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    I'll second BFC's comment. That outer seal tends to want to halfway pop out as the cases are being tightened. I too have had to re-seat that seal a time or two during this process. Once it's finally all together and the sealant is setting up... the seal stays where it should. No problems after that.

    Cheers!

  6. #6
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    Seal seems to be firmly in place after the Threebond set up.

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