BMW K bikes (Bricks)

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1Back to top Go down   Observation on dismantled Front forks Empty Observation on dismantled Front forks on Fri Jan 03, 2020 6:37 pm

DaleRT

DaleRT
Silver member
Silver member
Hi, i have dismantled my front forks and have a few questions.
   The internal of the sliders [lower legs] at the bottom are very rough as opposed to the upper section which is          smooth, is this normal? 
   Looking in from the top.
Observation on dismantled Front forks Img_2011

   Looking in through the small hole in the bottom of the slider.
Observation on dismantled Front forks Snapsh10

      The surface of the valve housing that is attached to the damper rod has also a rough finish. 
   I am assuming that the valve housing is rubbing on the internal wall of the slider.
Observation on dismantled Front forks Img_2012

      Also, the Manual has a diagram showing the main spring having a spring retainer / spring seat, in its          
   comments it implies not all will have these spring seats. Having dismanted mine i find it does not have them,   
      would it improve things to purchase and fit these on reassembly?

      The screws that hold the damper rods in place are different in length, does it matter?
   The damper rod is hollow so the longer one does not interfere with anything.
Observation on dismantled Front forks Img_2013

   And for those Metrically challenged  Very Happy
Observation on dismantled Front forks Img_2014

   Appreciate your comments,   Cheers   Dale

    

2Back to top Go down   Observation on dismantled Front forks Empty Re: Observation on dismantled Front forks on Fri Jan 03, 2020 7:10 pm

chris846

chris846
Life time member
Life time member
It's a long time since I had standard forks on a K, but I do remember way back in the 80's dismantling the original forks and its always stuck with me how crudely finished the aluminium parts - damper rod, valve parts, spacers etc - seemed to be. Back then I was working in precision engineering/fluid control and I just expected something far better on a German-engineered machine.

Hopefully others will be along to advise you about this.


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Sometimes I'm not really Suzi Quatro.
    

3Back to top Go down   Observation on dismantled Front forks Empty Re: Observation on dismantled Front forks on Fri Jan 03, 2020 9:02 pm

Laitch

Laitch
Life time member
Life time member
@DaleRT wrote:Hi, i have dismantled my front forks and have a few questions.
Put your moto's year and model in the Signature section of your Profile so it will show up with every post you make and let us know what you're discussing.

The appearance of the internals is the result of corrosion and abrasion that will occur when replacement of fluids, seals and bushings is neglected.


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1995 K75 81,000 miles
Observation on dismantled Front forks Usa-lo10
    

4Back to top Go down   Observation on dismantled Front forks Empty Re: Observation on dismantled Front forks on Fri Jan 03, 2020 9:56 pm

DaleRT

DaleRT
Silver member
Silver member
Thanks Laitch, lets see now.


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BMW K100 RS 5/86  104 ea 0886 2123                    0088502
    

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