F800 head-set bearing how to

Discussion in 'Parallel Universe' started by Camel ADV, Aug 14, 2011.

  1. zaner32

    zaner32 In over my head

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    Moncton
    Thanks to Oso Blanco for this. I'll have to do mine in the spring. I did miss something though... Can the races be bought with the bearings? Anyone have part numbers for the races?
    #61
  2. Emmbeedee

    Emmbeedee Procrastinators

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    Races are included with the bearings. The only other thing you'll need to buy is the lower bearing dust cover, a BMW part which should only be about $5. The one in the bike usually gets buggered up (technical term) when you remove the bearing.
    #62
  3. MotoLara

    MotoLara ADV rider wannabe

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    I managed to not bugger-up the bottom dust cover following the instructions from post #21. It took me 20 minutes of careful doing but didn't have to go to my local dealer for a $5 cover (for me, it's a 3 hr roundtrip to the dealer and a $30 ferry)

    My bike feels 'normal' again :D
    #63
  4. zaner32

    zaner32 In over my head

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    Thanks!:freaky
    #64
  5. leadingedge

    leadingedge Trailing along...

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    Hong Kong
    Thanks a million for the illustrated step-by-step.

    Replaced mine today at 11000km, totally notched....too many wheelies I guess.

    I used NTN bearings, MUCH cheaper than buying from BMW. My bearings only cost me US$15...for BOTH of them.

    I also managed to save the dustcap by using a 4mm drift punch. It made 2 little holes in the dustcap, but I just rotated it a little bit and re-installed.

    Thanks again for the post!
    #65
  6. chinchinete

    chinchinete Learning to fly

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    Sep 21, 2008
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    Thanks Oso Blanco and the rest for posting this DIY. Getting the lower bearing was a bitch: the two holes did not work and end up using Oso Blanco's chisel technique :evil. Used NSK HR 320/28 XJ at $30 each:cry. It is crazy expensive here in Central America.


    Cheers
    #66
  7. Reaver

    Reaver Outta Here

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    A belated "thanks" to all here. I did mine over the winter along with a fork oil change. My bearings were well greased and without rust but were bad enough to cause low speed steering problems while wrestling it out of the notch to maintain balance.

    On that note, I have saved myself much time and $ by using a little trick. My GS Dakar was sold certified and had a steering notch I knew wouldn't pass. An inspection showed lots of grease and no rust so I turned the upper bearing one way a few degrees and the lower the opposite. This reduced the notch by half and placed it well to the sides of steering range. I now had two minor notches, one each way well away from centre. Passed no problem. I then did the same to my new to me F8 for cert. They lasted another 30K kms. The goal is to remove the notch to prevent steering issues so along with regreasing, a little turn will spread the wear out extending the life of the bearings. This'll get you more time to plan for the eventual change.

    YMMV
    #67
  8. Chop Chop

    Chop Chop Hector erector

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    Just about to do my head bearings. As an aside, would you consider that the torque figures BMW are using are too tight and hence putting too much crush on the bearings causing early failure? Just something a mech mentioned to me as he has changed a few out.
    #68
  9. MikeMike

    MikeMike Long timer

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    I dont think so, seems more like undersized, poor quality and/or lack of grease at Spandau and the dealers.
    Those same things can crate a perfect storm for the career of a porn actress, too.
    #69
  10. Reaver

    Reaver Outta Here

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    #70
  11. JRWooden

    JRWooden Long timer

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    In another thread someone pointed out that the F800GS uses diff. P/N than F658GS ... I just looked at the Max BMW website and it is indeed a different P/N called out for the 650-twin...

    Why the hell would that be the case? :huh
    Parts catalog in transition?
    #71
  12. MikeMike

    MikeMike Long timer

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    They probably changed bearing suppliers and prices.
    Perhaps they are beginning to consolidate the parts catalog like the newer long snout oil filters as opposed to the previous stubby ones. The new ones are used on a number of different models. More parts shelf space for dealers to stock the Mini car fashion accessories like handbags, watches, lighters, and sunglasses.:huh
    You can get a BMW water bottle but you might wait 3 days for an air filter.
    #72
  13. JRWooden

    JRWooden Long timer

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    :rofl:rofl:rofl
    #73
  14. Mongo357

    Mongo357 Been here awhile

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    #74
  15. jengel451

    jengel451 1 Cool MotherF#$cker

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    Kansas City
    Good luck with All Ballz, I tried them a few times for my dirtbikes since they were a good price etc. Ended up spending the money Anyway as they didn't last. Especially their wheel bearings. They burn up real good.
    #75
  16. bmwgsrider

    bmwgsrider Been here awhile

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    Since the part numbers are different between the F800 GS and the F658 GS, can someone tell me if the the steering head bearings are the same.... if the Napa part number BR32 and/or SKF 320/28/X/Q, NSK HR320/28X3 is correct part number for the F658 bike as well?

    Thanks.
    #76
  17. Rodooo

    Rodooo Adventurer

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    Mar 31, 2013
    Oddometer:
    59
    Have replaced my head bearings now twice. Last set lasted 350 miles only. Correctly adjusted and checked again 50 miles later. Checked now at 350 miles and a notch in straight ahead position. Using skf bearings and good quality waterproof grease. I am at a loss with this bike. Never replaced head bearings in any of my bikes at Low miles like the 800 gs.
    Any help be really appreciated. Loosing faith in this bike
    #77
  18. MikeMike

    MikeMike Long timer

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    RooDoo, check your steering head tunnel on the frame for out of roundness.
    Using SKF and torquing as per the manual should hsve you getting tens of thousands of kms without notching, or close to that figure.
    A quick silly question. You are replacing the beariings and races all at the same time, correct?
    Are you following the torque sequence from the manual exactly?
    I have replaced mine 3 times in 55,000kms. Once under warranty and twice for notches after hitting large potholes at speed hard enough to dent both rims each time.
    #78
  19. Rodooo

    Rodooo Adventurer

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    First set lasted 12 thou miles no problem. Everything in frame tube looks perfect. I adjusted it up last time the same as the start of this thread. Always replace bearings and races at same time
    #79
  20. JRWooden

    JRWooden Long timer

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    I one of the head-set bearing threads there was a comment about an electrical ground being loose which then caused current to flow through the headset bearings causing them to fail.... :huh

    just food for thought .... :wink:
    #80