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Thread: 93 k75s - steering bearings

  1. #1
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    93 k75s - steering bearings

    I am going to rectify a steering wobble issue on my K75S. This year I decided I was going to tackle this problem by changing front tire + new dynamic balancing, changing the front wheel bearings, changing the steering bearings and races, and changing the fluid bloc.

    If my memory serves me right, many on this Forum suggested the BMW steering bearing grease is not up to par. So what is the Forum recommended replacement grease for the steering bearings? My options are as follows: Guard Dog GD-525 Moly Grease (man this stuff stinks), Honda Moly 60 Paste, Pure Dow High Vacuum Grease, and finally the BMW Motorcycle Grease Kluberplex 34-132 steering head and wheel bearing grease.

    The Dow HVG was obtained last year for the purpose of repacking the fluid bloc. However, after I was told there was only one fluid bloc available in North America, I bought it as I wasn't sure in what condition I'd find mine, too risky and I prefer avoiding another K75S dismantling.
    Last edited by ghyber; 04-06-2014 at 02:57 PM.
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

  2. #2
    A bozo on the bus deilenberger's Avatar
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    I would go with the Dow HVG - you want something that is viscous (ie - thick) and out of the greases you have the Dow is likely to be most suitable. I know other people have used it in the past with success. I believe BMW no longer offers their own FluidBlok grease.
    Don Eilenberger http://www.eilenberger.net
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  3. #3
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    Quote Originally Posted by deilenberger View Post
    I would go with the Dow HVG - you want something that is viscous (ie - thick) and out of the greases you have the Dow is likely to be most suitable. I know other people have used it in the past with success. I believe BMW no longer offers their own FluidBlok grease.
    So you're saying "go with the Dow HVG" for the steering bearings or the fluid bloc? Or both?
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

  4. #4
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    Just for the FluidBlock.

    The new FluidBlock comes prepacked with the correct grease. So why bother with guessing, just install the new one:


    46 51 2 310 218 DAMPER RING FOR FLUIDBLOCK $29.14
    Part is factory packed with lubrication.




    Ironically, another source of steering wobble (especially when decelerating around 50 mph) is the REAR tire. Had that once and iot was driving me nuts trying to find the cause. Changed out worn rear tire and it immediately went away.




    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  5. #5
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    Quote Originally Posted by 98lee View Post
    Just for the FluidBlock.

    The new FluidBlock comes prepacked with the correct grease. So why bother with guessing, just install the new one:


    46 51 2 310 218 DAMPER RING FOR FLUIDBLOCK $29.14
    Part is factory packed with lubrication.




    Ironically, another source of steering wobble (especially when decelerating around 50 mph) is the REAR tire. Had that once and iot was driving me nuts trying to find the cause. Changed out worn rear tire and it immediately went away.




    I hear you Lee with the guessing part. The old fluid bloc actually looks pretty good, but I am replacing it nonetheless. So, what do I used to grease my steering bearings?!

    Oh, I am changing the rear tire too. This is what the K75S currently looks like: I want that wobble to GO AWAY!
    Last edited by ghyber; 04-06-2014 at 02:59 PM.
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

  6. #6
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    Hang on to the old Fluid Block as there might come a time when they are NLA.



    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

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    Quote Originally Posted by 98lee View Post
    Hang on to the old Fluid Block as there might come a time when they are NLA.
    Good advice, I will hang on to it for sure; the second bit of information I obtained during my quest is that there are/were only seven left in the motherland.

    So, Lee, what grease...
    Last edited by ghyber; 04-06-2014 at 02:59 PM.
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

  8. #8
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    The fluid block should have a white grease inside in the square segments.

    You have TWO new fluid blocks? Or is the top one your old one?




    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  9. #9
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    Quote Originally Posted by 98lee View Post
    The fluid block should have a white grease inside in the square segments.

    You have TWO new fluid blocks? Or is the top one your old one?




    Top is the old one; you can see the pointed hex bolt indentations in the first 7mm of the fluid bloc.
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

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    Grease type - My Kingdom For Grease

    Still waiting for input on the type of grease to use on my steering bearings.
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

  11. #11
    Mars needs women! 35634's Avatar
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    Did mine a couple years ago, couldn't find much info so just used Honda Moly 60 mixed with some wheel bearing grease, half and half. That dog stuff should be good too. Mine's been fine so far.
    1987 K75S
    Original litter
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    2012 Ural Gear Up

  12. #12
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    Quote Originally Posted by ghyber View Post
    Still waiting for input on the type of grease to use on my steering bearings.
    Wait no more.


    BMW recommends:

    Shell Retinax A

    or

    Brand-name anti-friction grease
    Usable temp range -30deg...140deg C
    Drip point 150deg....230deg C
    High protection
    Good water/oxidation resistance



    Haynes recommends:

    Good quality, high melting point lithium fibre-based grease



    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  13. #13
    Benchwrenching PGlaves's Avatar
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    I like wheel bearing grease for steering head bearings. You want an EP (extreme pressure) rating, anti-corrosion, anti washout. The GD 525 would be my choice from what you have.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  14. #14
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    Quote Originally Posted by PGlaves View Post
    I like wheel bearing grease for steering head bearings. You want an EP (extreme pressure) rating, anti-corrosion, anti washout. The GD 525 would be my choice from what you have.
    Thanks for the responses folks.

    Paul, just wondering why you recommended the Guard Dog over the Honda Moly 60 for the steering bearings? From what I read, the GD has 30% Molybdenum Disulfide while the Honda Moly has 60%? Just curious as the Guard Dog website states the following:

    GD-525 Moly Grease is a synthetic, high temperature grease designed for all types of shaft splines. For motorcycles, use it also to lubricate u-joints, swing arms, starter drive gear, bushings, pins, cable barrels, levers, etc. For industry, GD-525 is a general purpose EP machinery grease, and a grease for the ?fifth wheel? and king pin on tractors. (GD-525 is not a lubricant for wheel bearings and chains.)

    Why would GD not recommend this grease for wheel bearings?

    Ghyslain
    Last edited by ghyber; 03-17-2014 at 03:42 PM. Reason: spelling
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

  15. #15
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    Decided to use the Honda 60 Moly Paste for the steering bearings.

    Here is some feedback on installing the steering bearing races I can offer for those who have the time, talent and inclination to attempt the task themselves (which I HIGHLY recommend doing yourself).

    I purchased the Steering Head Bearing Puller set from Dan Neiner from Cycle Works to assist with the job. The bearing puller works great, so does the race extractor. As far as inserting the bearing races into the steering cavity, I would recommend a bearing & seal driver set similar to what is sold at Harbour Freight. I tell you, if I was living in the USA, I would have a subscription to the place. I ended up driving the bearing races using the old race, an extra wide washer and a good ole hammer.

    Ghyber
    1993 K75S Mystic Red Pearl
    2007 K1200GT 997 Blue

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