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Inner chaincase sealing discs

Discussion in 'Norton Commando Motorcycles (Classic)' started by fireflake, Sep 3, 2017.

  1. fireflake


    Apr 21, 2015
    Hi, what's the best way to join the 2 inner primary chaincase sealing discs, part # 06 0769 cheers David
  2. concours

    concours VIP MEMBER

    Dec 29, 2011
    Any sheet metal shop will have a spot welder, 10 minute job, just like OEM.

    Or, if you have a MIG at home, and want to do it all yourself, drill 3, 3/16" holes in one side, assemble, plug weld.
  3. kommando


    May 7, 2005
    No welder so I use pop rivets with a smear of sealant.
  4. concours

    concours VIP MEMBER

    Dec 29, 2011
    Good choice, easy to drill out if you need to remove it.
  5. texasSlick

    texasSlick VIP MEMBER

    Jan 2, 2013
    I drilled 4 holes at 90 degrees, installed #4-40 pan head screws, nuts on outside with red Loctite, tightening just enough for a snug sliding fit. That way, I can renew the felt washer without any fuss.

    BTW .... I don't know if Cdo discs are same as Atlas, but it is possible with Atlas discs, to bond an additional sealing washer to the inside of the inner primary cover, the object being to direct oil which may get behind the inside disc to flow fore and aft of the transmission shaft.

  6. ntst8

    ntst8 VIP MEMBER

    Feb 14, 2004


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