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Leaky Forks?

Old 11-18-04, 09:09 PM
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mxrider
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Leaky Forks?

I went to look at a second hand bike for my brother yesterday. The bike was in good condition but the forks were completely spongy and empty of whatever they are supposed to be filled with. The forks are marizocchi dh3s. Excuse the newbie question but are they filled with oil or air? There was some oil on the forks but the owner said that he had sprayed it there. I am not entirely convinced! Is it likely that the seals are gone and if so are they expensive to get replaced? Anything else I should look out for?
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Old 11-19-04, 07:57 AM
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I've never heard of those forks, but a quick web search and I found a review on http://www.mtbr.com/reviews/Front_Sh...ct_21681.shtml
It seems they are supposed to be filled with oil and have air damping with no springs? so the air sealed in the forks would give you your spring and the oil was for lubrication and damping.
Some of the reviews mentions the seals leaking/blowing after a few years, this is probably what has happen'd to those DH3's so they will need a good service. One of the reviews mentions upgrading by putting springs in, its suggested that with the springs in you can lower the air pressure which will help take pressure of the seals?
The problem now is they are old, they were first made in 1995! so getting new seal may be impossible. It may also be hard to fix yourself.
so it may not be worth fixing them up? But saying that they look like a classic design and I LOVE retro stuff, in fact I'm sure I can remember drooling over those shocks way back when. So it may be worth giving them a new lease of life.

Marc

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Old 11-19-04, 09:59 AM
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The person that was selling the bike said that they just needed to be pumped back up with air. could this be the case or would a seal still have to have blowen for them to be empty? Neither the seller or I know much about bikes so I don't know. The oil on the forks could be just sprayed there for lubrication as he said. Would like to buy the bike but it wouldnt be worth it if a lot will need to be spent on the forks!
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