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Thread: internals of stock Ohlins steering damper for RSV1000R -02

  1. #1
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    internals of stock Ohlins steering damper for RSV1000R -02

    I am about to tear down to fix some problems with the stock Ohlins steering damper that came with my -02 RSV-R bike. I have read on some kawa forums that the ZX10R comes with a bleeder hole in the Ohlins damper to prevent a too tight setting. Is there anything similar on the Aprilia part?

    (I want to know so I can "fix" it then, as the bike mainly lives on the track)

    I have seals, slide bearings, and a range of oils, and soon a vacuum systme to get rid of the air when filling - just waiting for the weekend to come so I can take it apart.

  2. #2
    apriliaforum expert danman's Avatar
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    Take the easy route and send it to Ohlins.
    Artificial Intelligence stands no chance against Natural Stupidity.

    Dan

  3. #3
    apriliaforum expert ghostrider71's Avatar
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    Quote Originally Posted by danman View Post
    Take the easy route and send it to Ohlins.
    ...and for those of us that want to do it ourselves???.....
    Since it was highly recommended, I put THEGEEK on ignore and the forum IS a much nicer place!!

  4. #4
    apriliaforum expert danman's Avatar
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    I'd do battle with the rear shock before the damper...damn damper is a bitch. atleast I understand the shock....but on their suspension components Ohlins will revise internals during service if the spec has changed. A standard service from Ohlins USA is $75 if no addition parts are required. My shock and damper are on their way back now...the bill was $261 for both rebuilds and all replacement parts...this was the first time the damper was serviced since 01 when new...and it was sloppy....and the first major components replacement on the rear shock since it was bought in 02. Over all the price from Ohlins was better than any of the locals that I usually deal with...and they are quality suspension people.
    Artificial Intelligence stands no chance against Natural Stupidity.

    Dan

  5. #5
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    Mission complete - I found the bleed valve and closed it, also got the damper completely air-free with a DIY vacuum bleeder tool

    The adjuster valve before:
    http://wintermute.csbnet.se/~zilog/h...0/PICT0081.JPG

    The adjuster valve after:
    http://wintermute.csbnet.se/~zilog/h...0/PICT0084.JPG

    The complete set of internals of the damper:
    http://wintermute.csbnet.se/~zilog/h...0/PICT0088.JPG

    The vacuum pump being glued together (from a cheap 12V compressor):
    http://wintermute.csbnet.se/~zilog/h...0/PICT0085.JPG
    http://wintermute.csbnet.se/~zilog/h....JPG.small.jpg
    http://wintermute.csbnet.se/~zilog/h...0/PICT0087.JPG

    I replaced the oil with slightly heavier oil than the stock Ohlins oil (19cst is stock, I put 25cst or so in there), but that was not necessary - with the bleeder hole soldered tight, the damper goes completely solid in the tightest setting.

    Now the only part left to fix is the bearing that attaches the damper to the frame - it is so worn that is almost falls off the bike.. hopefully I can get an Ohlins service guy to sell me one.

  6. #6
    apriliaforum expert
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    EDIT:

    The method I bled the damper was by attaching a long hose airtight to the the hole in the damper where the hex screw sits, holding the hose upright with enough oil in it to fill the damper, and then alternating between pumping vacuum in it/letting the air back in. This seems to be very effective at sucking out any air bubbles with close to no effort.

  7. #7
    apriliaforum expert danman's Avatar
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    Definitely creative.
    Artificial Intelligence stands no chance against Natural Stupidity.

    Dan

  8. #8
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    The bike has been tested in fast-mode on track with NTEC slicks and all, and was rock solid even on a low steering damper-setting. Completely different behaviour from it after this operation.

    Now I have one question for you:
    Does anybody know the dimensions of the joint-bearing that sits in the steering damper body? I want to order one that waits for me when I get home from a trip, but the bike is several hours away from me right now, so I wont be able to take measures before I get back..

  9. #9
    apriliaforum prov-nov
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    Hi there

    What were the simptoms of a damaged steering damper?
    did it pulled the front from left to right? in slow speed?

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