Home Forums General Counties Cars Discussion Horn, trafficator switch removal

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  • #4233
    chipples
    Participant

    can someone please tell me how to get at the trafficator /horn switch. I’ve tried undoing the grub screws but it still does not want to come off. If I try to lever it any more I’m sure I’ll break the whole thing!

    #4235
    MikeN
    Participant

    The trafficator switch has a long tube that goes all the way down the centre of the hollow steering column. The wiring goes down this tube.

    Lay on your back at the front of the car and you will see a brass nut with the wires coming through. Undo this nut and it should all come free.

    Mike

    #4237
    PeteJS
    Keymaster

    As stated above, you’l need to undo the nut at the end of the steering box. You will also have to cut through the ‘olive’ that sits behind the nut in order to withdraw the centre of the wheel complete with the stator tube.

    You’ll need to find a replacement olive – try plumber’s merchants – as the olive is there to keep the oil in the steering box.

    #4241
    Davewhy
    Participant

    Dear Chipples,

    It will depend on which car you have.

    If you have and A40 Devon or an A16 or A70 Hereford then you will need to cut through the Olive as the switch is fixes tot he long stator tube running through he column. The olives are very hard to find (I doubt you will get one from a Plumbing merchant unless they are a very old established shop.)

    Fortunately the club has a good stock = speak to Ray.

    If you have an A40 Somerset or Hereford or any Atlantic then you do not need to cut the Olive as these models have a split stator tube. On these models simply undo the grub screws and disconnect the wires at the bottom of the column and the horn and Trafficator switch will withdraw if there is enough slack in the cable.

    #4243
    chipples
    Participant

    Many thanks folks, just got to work out now why the indicators don’t cancel. I hate it when things don’t work.

    #4245
    david1945
    Participant

    I would like to know how to fix the self cancelling too, my indicators work o.k but do not self cancel so i wired in warning buzzers-easy job.

    #4247
    Davewhy
    Participant

    The Indicators cancel via 2 cams on the switch. As the wheel is turned the cams move over a post which is bolted to the steering column nut once the wheel returns to straight ahead the cam pushes the switch back to off.

     

    #4249
    chipples
    Participant

    Managed to dismantle everything, the ring with the raised “hump” on it had been put on 180. Degrees out! I now have self cancelling indicators. My next problem is that the three grub screws are so badly damaged I can’t screw them in far enough to hold the retaining ring in place. Does anyone know what thread they are, or even better has anyone got any good ones?

    #4251
    Davewhy
    Participant

    Pretty sure they are 2BA grub screws. Available on eBay. Just search.

    You will need to file/grind a point on them. so purchase them longer than you need.

     

    #4253
    chipples
    Participant

    Many thanks for all the information, everything now back together and working! So pleased, but what a complicated/strange setup.

    #4255
    Davewhy
    Participant

    I agree but it was standard Lucas system for most cars of the period. Just a different horn boss and switch. They often don’t cancel. My Atlantic is hit and miss.

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