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Help CB250rs steering head bearing - seals?

Discussion in 'Honda 250cc Singles' started by Mike_T, Dec 2, 2019.

  1. Mike_T

    Mike_T Active Member

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    My Bike:
    CB250rsa
    Hi all,

    quick bit of advice if possible:-

    I am about to replace the steering head bearings on my CB250rs, and the yokes as the top nut thread was very nasty on the old ones.
    I'll change to tapered bearings for longer life and easier fitting. I've done this job before on similar age bikes.

    The kit I got from a reliable UK supplier:
    https://www.davidsilverspares.co.uk/CB250RSA-1980/part_28287/

    Things seem to fit alright on the new yokes.
    However, on the lower bearing the original bearing has a dust seal on the cone, that will seal with the frame head lower.
    (Item 3 = dust seal that fits onto item 6 = cone):
    https://www.cmsnl.com/honda-cb250rs-1980-a-england_model16355/partslist/F06.html#.XePjatXgp9A

    But, my new set, has a washer to bring the lower bearing to the right height (as seen in link), but no seal. I can't use the old seal as it is directly on the cone.

    Anyone done this job? And do you just go with it and ignore the lack of a proper seal?
    The washer in the kit probably fills most of the bottom of the steering head, but I don't like the idea of it not having some sort of rubber seal.....
    any thoughts or advice? Ideally has anyone done the same job.....

    Thanks,
    Mike
     
  2. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

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    Location:
    Tamworth, NSW
    My Bike:
    Maico 250, Royal Enfield 250, CF 250 V5 and 650TK, XL250, CBR250, ZZR250 plus a few others.
    When doing a similar set up I fitted the seal under the bearing above the washer.
     

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