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Top Yoke Removal

Discussion in 'Norton Motorcycles (Modern)' started by glb, Mar 15, 2020.

  1. glb

    glb VIP MEMBER

    Joined:
    Sep 21, 2015
    I have read previous posts but I am trying to remove the top yoke nut on a 2015 Dominator. It will not budge and the nut underneath appears to be also turning. There is no way to get a spanner in there. Anyone done this before and could explain to an idiot please.
     
  2. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
    By top nut are you meaning the acorn nut?
     
  3. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
    F681E33A-D42F-4B6D-B196-2032D92689B3.jpeg D21E5CDB-8EC2-42F9-997C-4C8A577765B3.jpeg

    I used a socket to remove the top acorn nut.
    Then once the top yolk was removed I used a socket to remove the top stem jamb nut while using a thin spanner to hold the lower nut.

    I had to make thin spanner wrenches, I have some thin snap on wrenches but they were still thicker than the yolk nuts.
     
    glb likes this.
  4. TonyA

    TonyA

    Joined:
    Jan 16, 2015
    Hello GLB , I have heard of this problem before . The problem you have is that the entire shaft is spinning. This is what I would try next : Verify from underneath the lower yolk , that the center shaft is spinning when you turn the nut on top . On my bike this is where the horn is bolted on. Once verified the entire shaft is spinning , clear the area of other parts such as horn , cables , brackets to get a clean grasp of it . Then you must get a good vice-grip pliers with clean sharp teeth so you can get a substantial grip on it . This is important , you must get a firm grip on the head of the steering stem while you loosen the top nut. Get a second person to help if necessary , you don't want to slip off. If you are inclined , this shaft can have flats cut into it so this will never be a problem to you again !
     
    glb likes this.
  5. TonyA

    TonyA

    Joined:
    Jan 16, 2015
    Hello GLB , I have heard of this problem before . The problem you have is that the entire shaft is spinning. This is what I would try next : Verify from underneath the lower yolk , that the center shaft is spinning when you turn the nut on top . On my bike this is where the horn is bolted on. Once verified the entire shaft is spinning , clear the area of other parts such as horn , cables , brackets to get a clean grasp of it . Then you must get a good vice-grip pliers with clean sharp teeth so you can get a substantial grip on it . This is important , you must get a firm grip on the head of the steering stem while you loosen the top nut. Get a second person to help if necessary , you don't want to slip off. If you are inclined , this shaft head can have flats cut into it so this will never be a problem to you again !
     
    Last edited: Mar 15, 2020
    glb likes this.
  6. Canyon Motorcycles

    Canyon Motorcycles

    Joined:
    Feb 10, 2020
    The 2 head bearing adjuster nuts are Triumph parts, All the T3 bikes, 955I and modern classics, Triumph sell the 2 flat spanners as a special tool you can get from any Triumph dealers, makes it easy to get the feel of when setting the head bearings up.
     
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  7. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
    I made these from 304 stainless steel. 34mm. 35mm. 36mm and 37mm.

    I couldn’t find a tool brand that made them slim enough.
    01556CAF-1BCC-45D8-9C23-D47CC01BD9C4.jpeg 7615ABEF-4F1D-444A-A5E7-D846A293F45F.jpeg 6361F076-FAD7-42AC-96DB-587C64ABF642.jpeg
     
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  8. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
    you could use an internal pipe wrench. The stem is hollow and once the horn is removed the internal pipe wrench would fit inside the stem.
    https://www.amazon.com/General-Tools-139-Construction-Government-Compliant/dp/B00004T82B
     
    glb likes this.
  9. Canyon Motorcycles

    Canyon Motorcycles

    Joined:
    Feb 10, 2020
    Never seen those before, look like a great tool!
     
  10. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
    Plumbers tool.
     
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  11. TonyA

    TonyA

    Joined:
    Jan 16, 2015
    That may be the perfect tool to do this job ! Good Find.
     
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  12. glb

    glb VIP MEMBER

    Joined:
    Sep 21, 2015
    Hi Thanks for all the replies and advice. Sorry I am bit late in replying As diagnosed the entire shaft was spinning internally. I did not have a set of very thin spanners and on a Sunday here little chance of getting any. So I improvised by inserting a conical piece of metal (after removing the horn) in the bottom of the shaft and gently tapping it in. This gave just enough pressure for me using a long bar on the nut to break the loctite. I have not heard of it being called an acorn nut but seems like an apt description. Many thank to all that took the time to reply. I will now try to source some of the Triumph spanners.
     
    Last edited: Mar 17, 2020
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