Page 1 of 2 1 2 LastLast
Results 1 to 25 of 27
  1. #1
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506

    Linkage service, help needed. update: what grease to use?

    Today I had planned to give my frame's bearings some new grease and adjusting preload. Wasn't as easy as I had thought though.

    I started disassembling the rocker, and this is what I found, note that I haven't even washed my bike, this is from driving with the bike on the car in rain.



    Upper rocker looks like this:



    About here I got stuck, what do I do now? Nicolai only has guides in german and I can't understand that, Google translate doesn't help very much either.

    Dipper or Nicolai UK, you guys gotta know how to service a frame? Can you please help me?

    Thanks / Mike
    Last edited by mikael_nr1; 07-17-2010 at 03:28 AM.

  2. #2
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    1,955
    If its the same as the fr you should be able to pull the rocker levers off,The upper only runs on nylon bushes.Give them a pull and gently work them off.

  3. #3
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    Yeah that's what the exploded view on Nic's site shows too, I'll give it a try, althogh I've already tried bringing some force on them. Thanks

  4. #4
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    You were right Norco, thanks. A little tap was all it needed.



    I noticed that the washer isn't identical on both sides, and ofcourse, I don't know which size is supposed to sit where.





    So, there are 4 washers who look the same but in which direction am I supposed to mount them? :S


    I moved on the the Horst link, but how do I service these needle bearings? Can't remove seatstay from chainstay without pressing the axle out, am I supposed to do that?



    Alot of questions, many thanks if you could help me out with the answers

    Thanks / Mike

  5. #5
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    1,955
    Push the tube out that's in the center.The shiny part in the lower picture,should just push out/Tap out with rubber mallet and a socket

  6. #6
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    Okay, I'll try that tomorrow. Any ideas on the nylon washers?

  7. #7
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    1,955
    Looking at the wear/polishing in the middle picture i would say the one shown there is the wrong way around.

    This is a guess

  8. #8
    mtbr member
    Reputation: dipper's Avatar
    Join Date
    Jun 2005
    Posts
    1,404
    Nicolai do a tool kit with drifts etc that help but as said above you can improvise with sockets etc. Not sure about the odd size washer. where did that come from? I've only stripped one AM but can't remember there being different size washers.
    www.gravity-sports.co.uk

    flash bikes for flash gits

  9. #9
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    1,955
    I think the step on the washer goes towards the Needle bearing.

  10. #10
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    Spoke to Nic yesterday, the washers are supposed to look the same on both sides but can get worn and look like this, they told me it was fine to put them any way

    dipper: I was in the lathe and made som press tools yesterday, gonna continue later on today.

  11. #11
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    Aaah it's disassembled. One thing that got me confused was that the horst pivot is not a needle bearing as Nic's manual says, it was also a nylon bushing. As a matter of fact all of the bearings were nylon bushings.



    What kind of grease am I supposed to use for the reassembly? How tight should one adjust the preload?

    / Mike

  12. #12
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    1,955
    Mike,

    I use Motorex Prepm i had it for doing the pivots on my Turner.
    My Fr had needle bearings in it except the upper swing link pivot.

  13. #13
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    What kind of grease is that? Is it like bearing grease or fork grease? Would be interesting to know why they've switched to bushings instead of needle bearings.

    How hard do you preload bearings?

  14. #14
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    1,955
    Its a fork grease,Used to be used on Manitou forks.Turner bikes use it on there bushings.I think that the Igus bushes are self lubricating.Think they are designed to run dry.Just looked on Igus's website and it said maintenamce free,run dry

  15. #15
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    okay but there were some grease in there when the frame was new, gonna check with Nic on monday.

    Dipper do you know?

  16. #16
    mtbr member
    Reputation:
    Join Date
    Sep 2008
    Posts
    1,955
    Mike,
    Think mine had blue grease in it when i first had it.Unless the previous owner used it.This could be for the Needle bearings though.

    I just pinch them up very lightly.It only takes out the sideways slackness/wear

    Sam

  17. #17
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    Yupp mine had blue grease coming out of all pivots if I'm not wrong.

    Okay yeah that's how I thought it was done, neat with preloadable pivots

  18. #18
    mtbr member
    Reputation:
    Join Date
    May 2009
    Posts
    294
    There`s blue grease in all pivots from N-factory. Don`t know what brand they (Nicolai) use, but Ive found that all marine greases (sea vaselines) works well, and at least Yamaha`s water resistant sea vaseline is blue too. Have used that and it lasts well, does not wash out and does not mess a frame.

    Strange to read that there are different types of washers in pivots, in my AC-frame there are two similar pairs of washers in lower rocker pivot... and there`re needle bearings in Horst linkages

  19. #19
    mtbr member
    Reputation:
    Join Date
    May 2008
    Posts
    540

    Hope

    Quote Originally Posted by pergamonx
    Yamaha`s water resistant sea vaseline is blue
    For once google has let me down, dont suppose you have a link to this stuff?

  20. #20
    mtbr member
    Reputation:
    Join Date
    Dec 2005
    Posts
    506
    Pergamonx:

    The washers aren't supposed to be different, that's just how they've worn.

    I was quite shocked when I couldn't find any needle bearings in the Horst link :s

  21. #21
    mtbr member
    Reputation: rpm100's Avatar
    Join Date
    Jan 2008
    Posts
    445
    Has any one had to replace the bushings on their AM yet?

  22. #22
    mtbr member
    Reputation: Karve's Avatar
    Join Date
    Mar 2006
    Posts
    1,431
    This is a good post which covers some of the points

    http://www.nicolai-uk.com/index.php/2008/07/service-2/
    www.essexhertsmtb.co.uk - Mountain Biking near London in the UK

  23. #23
    mtbr member
    Reputation:
    Join Date
    Jun 2006
    Posts
    62

    too bad link doesn't work..:sad:

    Quote Originally Posted by Karve
    This is a good post which covers some of the points

    http://www.nicolai-uk.com/index.php/2008/07/service-2/
    too bad the link doesn't work..

  24. #24
    mtbr member
    Reputation:
    Join Date
    Jun 2006
    Posts
    62
    I need to replace my bushings now just after 1 season there's play on the upper seatstay pivots. Which is weird coz I thought they're suppose to last longer than that. Do you guys know if its possible to replace all the bushings with needle bearings?

  25. #25
    mtbr member
    Reputation: Karve's Avatar
    Join Date
    Mar 2006
    Posts
    1,431
    www.essexhertsmtb.co.uk - Mountain Biking near London in the UK

Page 1 of 2 1 2 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •