Oil volume Marzocchi dirt jumper 3 (2004,2005)

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Oil volume Marzocchi dirt jumper 3 (2004,2005)
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Posted: Jun 28, 2020 at 4:18 Quote
Hi, posted this in the mechanics forum originally but might be better here;

Can't seem to find a definite answer on oil volume/fill height for a set of 26" 100mm 2004 or 2005 (not sure of exact year, if anyone gives me a hint on how to tell..?) - from what I've seen oil volume may be same for both years anyway.

Service manual for 2005 says 185ml in each leg, manual is for a 130mm fork although mentions the 100mm as well in places. But no mention of difference for oil volume. Fully compressed, 185ml gives a fill height of 30mm from top of stanchion, which seems pretty high!? As I understand it, air would need to compress to this volume at full travel (?).

Somewhere else I've read 55mm fill height from top - going with a diameter of roughly the stanchion that would be about 20ml less each side.

Hope someone might be able to help me with this, I know forks are a bit antique but seem to have been popular and still a fair few around these days. Might be a straight forward answer, any tips would be much appreciated!

Posted: Jun 30, 2020 at 18:55 Quote
With all preload assembly removed meaning the springs or The preload sleeve measuring down on the top the oil height will be 45 mm with a 7.5 weight oil. If the riders pushing 200 pounds you can use a 10 weight oil. Good luck and ride safe my friend

Posted: Jul 1, 2020 at 15:07 Quote
Fantastic, I'll take 15mm out tomorrow (30mm from top currently). thanks a lot for the help, much appreciated!!

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