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 The previous version was outdated and no longer supported.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

Overflow tank exploded

Dirtdame;48842 said:
Looking at the overflow bottles on both my Kawasakis, it makes me think that the bottle on the Husqvarna is just not designed right. On the Kawi's there is the hose that goes in (from the radiator cap area) at the bottom of the tank, a ventless cap and then a vent hose coming off the top of the tank. That seems like a logical design right there.:excuseme:
Click to expand...
Exactly....so perhaps the solution is for Husky to understand that they may need to redesign/re-source the overflow bottle before someone is seriously burned.

An exploding anything should be dealt with by the manufacturer. At least in my humble opinion. :)
 
What confuses me is that on the TE 610 it came with coolant in the overflow bottle.
But the smaller bikes don't.
The problem here for me is that they use agip coolant that you can not find here.
So I have to drain the system and refill so as to not cross contaminate the coolants.
And yes I would need to put coolant in as water would just freeze at some time on me.
 
Reddog;48845 said:
the TE 610 it came with coolant in the overflow bottle.
But the smaller bikes don't.
Click to expand...

My 07 450 came with coolant in the overflow bottle. I remember checking the level before I took the bike out on it's first trail ride.
 
the three TE's I ride with 250/450 had coolant in the bottle. I'm guessing it is however good the dealer is because they would not ship full. My TXC450 or TE/SM610 have never been an issue. I have never seen this issue but on the web. Bottom line is do yourself a favor and at least make sure there is coolant in the catch bottle. Super hot steam blasting into the bottom of a catch bottle will blow a hole, into a pint of coolant, probably not.
 
Looking in the workshop manual and owner's manual it only says to make sure that the coolant "doesn’t exceed the middle of the expansion tank", which means you could have it anything from empty to half full as it doesn't mention a minimum level. However, I see my expansion tank has a mark on the rear labelled "Min" which I assume means minimum. Presumably that's the "fill line" that Motosportz referred to and it should be filled to that level? Mine was well below that from new and hasn't varied.

Assuming it is wise to have some coolant in there to avoid the tank possibly exploding, wouldn't it be useful if the Husky manuals mentioned that? Especially if it's been happening for years. :confused:
 
Motosportz;48867 said:
Yes, that is the minimum fill line.
Click to expand...
Thanks. Mine will be filled to that level before the bike runs again as sadly I'm allergic to both explosions and high temperature steam. :cripple:
 
Makes sence that an empty tank could be a problem.

If the tank has liquid inside, it will immediatly cool any steam that enters and the steam will contract - just had a look at mine and the overflow tube enters the bottom of the tank. If the steam is not cooled, it will expand and possibly blow up the tank.
 
But there is a vent on the lid of the bottle....would the vent not be the weakest point and thus the gas would shoot out? If the vent is plugged would the lid then not become the weakest link and blow off? So I am guessing that the bottles blow up if there is no liquid and the vent is blocked.

IMO the reason the bottles blow up is because they are shit. Putting liquid in may help but it does not change the fact that the bottles are shit. I would have hoped Husky would source a better overflow bottle.... just say'n
 
I can tell you it has nothing to do with the bottle. The hot steam is expanding the bottle to quickly. If you have fluid in the bottle like you should in any overflow bottle this will not happen. Besides anyone that is overheating a TXC 250 needs to get off the clutch. Just sayin
 
I'm not quite sure why some of you are getting upset, the person with the problem isn't.

Yes the bottles have issues when the radiator cap opens and the bottle is empty. It has been theorized that either the bottle explodes or melts or weakens the bottle - both of which don't happen when there is fluid in the overflow bottle.

The manual could indeed be improved, but based on the 2009 service manual, compared to prior years, things are getting better.

If you want to be sure the Husqvarna people know about this and other issues start up a thread in the Husqvarna feedback forum, either with a specific suggestion or a general suggestion with a link to this thread.

It is not humanly possible for people that can do something about these things to read all the threads on Cafe Husky, I can no longer keep up. Collecting the important items/suggestions in one place will ensure they see them in one spot... and should make people feel a little better that eventually the input may be considered.

That is what the feedback forum is for... I anticipated things like this a long time ago.
 
Who is getting upset? Is a forum not for discussion? There was a post regarding explosion of the bottle and a "fix" was suggested and I was just wondering what the reasoning behind the "fix" was.

Just because someone on the internet posts a fix for a problem does not mean it is correct. I just wanted more clarification. After reading the posts in this thread and others on other forums I thought that the real issue was the quality of the bottle. So the "fix" seemed to be a band aid to a bigger problem.

Although I think Hammer may be upset because he is so old
 
hammer;48911 said:
I can tell you it has nothing to do with the bottle. The hot steam is expanding the bottle to quickly. If you have fluid in the bottle like you should in any overflow bottle this will not happen. Besides anyone that is overheating a TXC 250 needs to get off the clutch. Just sayin
Click to expand...

yep, it really is that simple. :cheers:
 
I would second Coffee's suggestion that the company be informed in the feedback thread - it may be bad design, bad manufacture, whatever, but the OP should try to put them on alert. I'm not an engineer, but stuff exploding isn't good.

And in the meantime I'm going to make sure my bottle has sauce in it, and I don't ride the clutch too much:)
 
Coffee;48919 said:
I'm not quite sure why some of you are getting upset, the person with the problem isn't.

Yes the bottles have issues when the radiator cap opens and the bottle is empty. It has been theorized that either the bottle explodes or melts or weakens the bottle - both of which don't happen when there is fluid in the overflow bottle.

The manual could indeed be improved, but based on the 2009 service manual, compared to prior years, things are getting better.

If you want to be sure the Husqvarna people know about this and other issues start up a thread in the Husqvarna feedback forum, either with a specific suggestion or a general suggestion with a link to this thread.

It is not humanly possible for people that can do something about these things to read all the threads on Cafe Husky, I can no longer keep up. Collecting the important items/suggestions in one place will ensure they see them in one spot... and should make people feel a little better that eventually the input may be considered.

That is what the feedback forum is for... I anticipated things like this a long time ago.
Click to expand...

Didn't mean to start a crap storm guys. Actually I was delighted to learn that it was just the bottle that exploded and not something $$$.
Then I found a replacement for 21.99, more happiness.
Tomorrow, I'll look into this feedback forum and see if a post would be appropriate. But now it's late and I'm old and tired.
G'nite.
 
Note, removed mine from the 06 like most MX machines just ran the hose down under the motor, lost all my coolant from oheat nevr put the bottle back on, but just monitored the coolant and used good stuff.

kept the bottle on the 08 and maintained a good level of fluid (was Maxima coolaid pink)
oheated and exploded the coolant tank and even melted the white palstic check valve assy of the black cap. Installed a new tank and cap, (not expensive) installed Evans coolant and maintain tank level have no more issues . 1.8 bar cap, CV4 hoses, Hi press cross over tube, GFBN Tee fitting.
 
Go look at the plastic overflow tank in your car, it has a minimum coolant level to act as a heat sink and a maximum level to allow for expansion and overflow. The tanks work properly when maintained as such. Of course anything can be broken.
 
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