• Husqvarna Motorcycles Made In Sweden - About 1988 and older

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

1987 fork conical valve installation - which way?

PEZBerq

PEZBerq

Husqvarna
AA Class
Hi. I have an 87 510 TE that uses the Husky conventional fork (not USD) designed by Marzocchi so I am told. It has a floating conical valve ring that slides on the damper rod inside a a housing in the bottom of the fork tube. The valve ring is a non return device to control oil flow during rebound I guess. Anyway I have had the fork lock solid on two occasions now - one during rebuild while testing it and the second while actually riding the bike! The conical valve gets forced backward into the valve housing, distorts and grabs onto the damper rod locking the fork solid.

Clearly this is not good. I have confirmed I installed it as shown in the manual and parts book with the small end of the conical valve ring facing upwards on the damper rod. Attached photos show this. This seems wrong to me as the cone should face down to give a good seal on the valve housing chamfered seat and also to prevent it distorting as if obviously does if pushed down onto the lip of the housing "big end" first.

Can anyone confirm which way this conical ring should be fitted to work properly and not lock up the forks?

Thanks
 

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Taper downwards. As in your RH photo...

Also, there are some upgrade parts and extra holes in the later damper rods. There are 4 extra holes in the parts you picture to let the oil escape from behind the fork seal when the forks compress.
There is a pic on the 'News' section on my site..

Hope this helps!
Andy
 
Thanks Andy. Exactly what I was after! I saw your cut away photo. What dia are the extra four holes in the damper rod? Cheers Steve
 
hva-factory said:
Taper downwards. As in your RH photo...

Also, there are some upgrade parts and extra holes in the later damper rods. There are 4 extra holes in the parts you picture to let the oil escape from behind the fork seal when the forks compress.
There is a pic on the 'News' section on my site..

Hope this helps!
Andy
Click to expand...
Hi Andy, I know this is an older subject but I was reading it due to I am rebuilding a set of 87 XC conventional forks and was just wanting to confirm if that tapered dampening ring is installed with the taper facing down or up? The 87 manual says to install the taper facing up toward the triple tree. Is the manual wrong in this case? Thank you for the help,
Marty
 
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