• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

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 The previous version was outdated and no longer supported.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

'09 TE450 Radiator Overflow Question

sharpie1

sharpie1

Husqvarna
AA Class
Can someone explain the working of the cap on the overflow bottle? Is it supposed to hold pressure? I was in the middle of a ride when boom, the crossover hose blew (yeah, I know I should have replaced it with fuel injection hose, just haven't got around to it yet), I was able to use the existing hose to plug the crossover holes and keep riding but I noticed my other hoses bulging looking like they were ready to blow as well, I loosened the overflow cap and the damn thing was holding way more pressure than the radiator cap. I don't get it, my TE510 never did this. I cut a hole inside the overflow cap so I could continue to ride while on my trip. It seems as if the clear piece inside the cap can get stuck and not allow any pressure to escape, that can't be right can it?
 
hey sharpie -

It may be that your overflow cap had its silicone seal (the clear piece you reference) melted by hot coolant flowing into the overflow. Thats why we are supposed to keep it half full, if its empty then coolant steam enters, very hot, and can melt the plastic or the silicone seal.

I had it happen on an 07 510, just got a new plastic cap after, or even just keep your "modded" one going.

luck!

Brian Pegg
 
Mr Sleazy;110322 said:
It may be that your overflow cap had its silicone seal (the clear piece you reference) melted by hot coolant flowing into the overflow.
Click to expand...

Thats what is odd, the cap was in perfect working order (the silicone flapper deal still moved). It just somehow moved into the closed position and stayed under pressure which IMO is extremely dangerous, the pressure kept the rad cap from opening which built up extreme pressure in the radiator.

...this all actually happened because of the headlight bulb believe it or not, the bulb itself shorted out causing the fuse to blow that runs the fan so in the slow nasty single track my bike overheated which caused a long chain of strange events.:excuseme:
 
I have found that the little holes around the cap can become full of gunk that will stop the internals from moving under pressure. I now take it off peridically and give it a blow out.
 
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