• 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 The previous version was outdated and no longer supported.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!

XC430 Fork Noise

G

gregg0323

Husqvarna
A Class
Recently picked up an 82 XC430. It was in decent shape but tore it apart to restore before riding it. Finally done but I hear a clank when I compress forks and they extend back. Sounds like metal hitting metal. I used 5wt oil and filled with 450cc in each leg. I haven't put air in forks yet. Any ideas what this could be?
 
On my fork, when there's noise when extended, the plastic ring on the Inside tube must be changed.(don't know the word in English)
 
yeah they are pretty known to fail . my 500 does it but i dont mind the fork action atm so havent fixed it yet . it only does it when im putting it on the stand
 
not a bad idea to replace these when servicing seals. will also make this noise "topping out" when low or out of fluid. dont use air in the forks either, almost everyone agrees it just makes them harsher and restricts their movement in a bad way.
 
very easy once the fork is apart..they go right on the end of the damping rod you just had out. just dont spread em too far when putting them on..if you havent actually taken the forks apart, they are shockingly simple. they likely have about an inch of crap at the bottom. better order 4 seals as well. this model has double seals in each leg. get good ones! a nd a can or two of brake cleaner. many here including myself like good ol atf in them
 
get the bike upon a high stand, whip the front wheel out, then loosen the fork caps and if you have straight bar mounts, pull the bars off. then underneath the forks is an allen head screw. 8mm? I think..may be 6mm. undo it with a oil container underneath as oil goes everywhere. once undone the fork slider will slide right off (this is why you need a high stand;) ) leaving the damping rod exposed. pull the fork cap and springs out then unclip the circlip holding the damping rod in and its ready to have the washer replaced.:thumbsup:

if this makes no sense at all, check out the parts pdf in the tech section here and lookeesee. shimples
 
Tore the forks down and found both top out washers in decent shape. Cleaned inside of forks up and put back together with 15wt oil. One fork makes noise on full extend but the other doesn't. Strangest thing. Noise isn't as loud most likely due to heavier oil but just can't figure out why one clanks. How does the top out plastic washer prevent the metal clank in the first place? The washer doesn't separate the metal components so guess some hydraulic action based on the design of the washer is what prevents this?
 
Maybe , they were not in decent shape ? Did you have new ones to compare to ? I don't think just by looking at them that you can tell if there are not worn. They are a wear item and probably need to be replaced. Hope this helps , its probably not what you want to hear tho now that they are back together.
 
if they arent broken they are working. they seem to usually fall apart or break before they "wear out". all the washer does is force oil through, thats what limits the top out clunk. so yes it is a hydraulic action that stops the top out clunk. do you have enough oil in the forks? if they are low it will clunk as there is no oil to flow thru the top out washer.
also, make sure the fork is fully collapsed with no spring when you tighten the damper rod bolt, then check for smoothness in operation, no binding.
 
they can be slightly bent and or worn without looking bad and make the forks top out. at a couple of buck ea, just flick some new ones in and then you know its something else if it continues.
 
gregg0323 said:
Tore the forks down and found both top out washers in decent shape. Cleaned inside of forks up and put back together with 15wt oil. One fork makes noise on full extend but the other doesn't. Strangest thing. Noise isn't as loud most likely due to heavier oil but just can't figure out why one clanks. How does the top out plastic washer prevent the metal clank in the first place? The washer doesn't separate the metal components so guess some hydraulic action based on the design of the washer is what prevents this?
Click to expand...

Did you check the damper rod condition for rub marks ?

I had a similar noise on my 82 430 and it turned out to be the damper rod wasn't properly centralized when the previous owner put the forks back together. I always compress the forks when I put the rods back in and do the bottom bolt up with the legs vertical so they pull down tight and central.

I did post some pictures on here somewhere from how I do it.

Steve
 
good one forgitted allus about that. always with husky forks, compress the tubes with the bottom allen bolt loose so the damping cone is pushed into the centre of the chamfer in the fork tubes before tightening it up. makes a heap of difference.
 
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