Inner Primary mounting bolts

Discussion in 'Touring Models' started by Mongo1958, Nov 9, 2013.

  1. Mongo1958

    Mongo1958 Junior Member

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    The dealr stated that the inner primary cover mounting bolts should be replaced if I take the inner cover off.
    Is that true?

    Seems like waisted $$$ to replace the inner primary mounting cover bolts.
    Would anyone care to tell me why?

    Thanks
    [​IMG]
     
  2. fin_676

    fin_676 Experienced Member Staff Member Moderator Contributor

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    I re used the inner primary bolts on my 94 dyna but replaced the tab washers I coated the underside of the bolt head and the tab washer with hylomar to get the bolts to the gearbox to seal otherwise oil can escape

    Brian
     
  3. Breeze3at

    Breeze3at Well-Known Member

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    Maybe because the original bolts have/had the dab of yellow locktite on them?
    I think some blue locktite would keep them tight again.

    I just looked in my S.M., they are called "seal bolts" and have orings under the washer head to seal oil inside the primary. You will take a chance of an old oring not sealing properly.
     
  4. Mongo1958

    Mongo1958 Junior Member

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    Ahhhhhhhh! Now it makes sense. Thanks guys!
    [​IMG]
     
  5. brownfoxx1

    brownfoxx1 Active Member

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    if the bolts have s dimple in the head( smooth concaved area in the bolt head thats the sign of a shear bolt. i havent had mine off so i don't know,
     
  6. Blue Wide Glide

    Blue Wide Glide Junior Member

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    Are you referring to the bolts that hold the outer primary cover to the inner primary cover, or the bolts that hold the inner primary to the transmission?
     
  7. Jennmarr

    Jennmarr Junior Member

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    What is "shear" bolt?
     
  8. wannaride

    wannaride Active Member

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    I think he is thinking, if not ignore this, stretch bolts, they are basically torqued to the max & the bolt actually stretch's. A torque of 20" lbs then 90*(just an example) would be how they would have you torque the bolt. So if you read in the manual that it needs to be torque to specific torque & then an additional degree of turn that would be a stretch bolt. Head bolts on a lot of the newer vehicles are this style. When I got my primary gasket at the dealer they told me I needed new bolts also (I got the belt for a 2007), then I told him I had a 1999 Ultra he said never mind. So it is something they have done at least from 07. If they have o rings, that would make sense also.

    Toby
     
  9. Jack Klarich

    Jack Klarich Expert Member

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    A sheer bolt or pin is lesser grade meant to sheer off preventing greater damage to larger components you will find them used alot on snow blowers and lawn equipment