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oil filler cap, WTF ?

Discussion in 'Norton Motorcycles (Modern)' started by Fast Eddie, Feb 9, 2018.

  1. Stephen_Spencer

    Stephen_Spencer VIP MEMBER

    Joined:
    May 31, 2017
    I guess that they may all be slightly different, hand built and all. I screw mine in until I meet the very first hint of resistance, as it begins to bottom and leave it there. This is after checking oil level before each ride.

    The dipstick does self tighten during the ride however, I can still always remove it by hand without the need for a tool of any kind. Works for me.
     
    contours, Britfan60 and TonyA like this.
  2. Britfan60

    Britfan60 VIP MEMBER

    Joined:
    Jan 5, 2014
    Ditto. It's no a drain plug, so it doesn't have to be that tight. As soon as it stops with light finger torque, done. never had an air or splash problem.
     
  3. BritTwit

    BritTwit VIP MEMBER

    Joined:
    Aug 25, 2009
    For sure.
    I never tighten the cap, just screw it down to it's stop lightly.
    Never had it back out, as stated - vibration self tightening, and is always easily unscrewed.

    Think it through.
    Even if the cap did unscrew and back out - the dipstick itself in the tank would prevent the cap/stick from falling out.
    It might shake about some if loose, but it's not likely to fall out.
    And you would most likely notice the bobbing about cap as soon as it came loose.
    Just lightly seat the cap, don't tighten it down.
    This is documented Norton 961 quirk #432.:D
     
    MxMartin likes this.
  4. MxMartin

    MxMartin

    Joined:
    Nov 13, 2017
    I think we should wipe the slate clean and just register the 961 as a single quirk ;)
     
  5. Stephen_Spencer

    Stephen_Spencer VIP MEMBER

    Joined:
    May 31, 2017
    OK, so I made a dick of myself today! The technique of lightly hand tightening the dipstick plug I outlined above as my preferred option came back to bite me in the ass!

    So it appears that if you screw in the plug firmly, it self tightens further whilst riding, making it difficult to remove without a tool. Conversely, if you do not tigten enough it backs out with vibration whilst riding and sprays oil all over your top yoke and clocks. This happened to me today. DOH!! Oil all over the place. Guess I’ll be tightening and using a tool from now on.

    Gotta go, I have a bike to clean!!
     
    Clive likes this.
  6. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    DOH !!
     
  7. Britfan60

    Britfan60 VIP MEMBER

    Joined:
    Jan 5, 2014
    I finger tighten only. It always seems tighter when I take it off.
     
    Clive likes this.
  8. Stephen_Spencer

    Stephen_Spencer VIP MEMBER

    Joined:
    May 31, 2017
    Yes, me too Briffan up to this incident. There is clearly a point at which it either tightens when riding, or if initially too loose, backs out.

    Just gonna buy one of the tools outlined above and carry it in my jacket.
     
    Britfan60 likes this.
  9. Britfan60

    Britfan60 VIP MEMBER

    Joined:
    Jan 5, 2014
    Tear the O ring?
     

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