Is my Ohlins shot?

Discussion in 'Old's Cool' started by Solo Lobo, Oct 4, 2005.

  1. Solo Lobo

    Solo Lobo airhead or nothing

    Joined:
    Mar 16, 2004
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    9,179
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    Got it in the mail last night, its used and is going into my R100GS.

    When I turn the remote preload knob there is no resistence.... seems like the similar Ohlins I had on a '88 Ducati F1 that I used to have did have a fair amount of resistence.....

    Time for a rebuild???????
    #1
  2. HellSickle

    HellSickle Scone Rider

    Joined:
    Sep 19, 2005
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    9,651
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    My Ohlins did this when the nitrogen pressure leaked out. 1st step is to give it a fresh charge of N2.

    Personally, if it's a used shock, I would change the oil and give it fresh N2 before you put it in the bike.

    -Jeff-
    #2
  3. Solo Lobo

    Solo Lobo airhead or nothing

    Joined:
    Mar 16, 2004
    Oddometer:
    9,179
    Location:
    Shoreline, WA
    Thanks for the advice...

    Pulled off the preload and it's leaking.... off the shop!
    #3
  4. HellSickle

    HellSickle Scone Rider

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    Yup. Sounds like all new seals & bushings are in order.

    BTW, if you've never rebuilt a shock, it's not the rocket science that many shops would have you believe. If you can get the spring off, the rest of it can usually be done with tools you have in the garage. The only tricky part is bleeding all of the air out, and you can generally rig up a homemade tool for that. Pressing a new bushing in the seal head is easiest with a press, but can also be done in a vice with a little care.

    I got tired of running to the shop for N2 every time I changed my shock oil, so I bought a tank and regulator. I drilled the little rubber charging diaphragm out of my Ohlins and put in a regular shrader valve.

    Getting Ohlins parts can be a PITA. I'm not sure if there is a knowlegeable shop out there that sells just parts. The last time I needed something, I ended up contacting Ohlins USA.

    -Jeff-
    #4
  5. johnjen

    johnjen I've Been Resigned

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    The other aspect that's a bit tricky (besides releasing the spring) is knowing how to make changes to the shim stack if you ever need to change the basic internal dampening. Not rocket science but experience does come into play and can speed up the process of getting it dialed in.

    JJ
    #5
  6. HellSickle

    HellSickle Scone Rider

    Joined:
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    Agreed. I will leave that to the pro's. I don't have the time or inclination to experiment around to get the right valving. That's something best left to a guy who has dialed this in on many other bikes. Most of the valvers consider it a art. Very few apply much science to it.

    -Jeff-
    #6