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 The previous version was outdated and no longer supported.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

Water pump O ring needed?? (leak)

Force10

Force10

Husqvarna
AA Class
Hey all,

Looks like I have a leak around the water pump:

Pump.jpg

Is a new O ring all that looks like is needed? I did just do a flush of the old coolant and replaced with Engine Ice. I drained the old coolant, then left the drain plug out and rinsed a little distilled water through it. Installed the drain plug and put a mix of 50/50 distilled water and vinegar and ran it for a few minutes. Drained it and rinsed some more distilled water through it. Then I filled it with engine Ice.

Pretty sure I did everything right. I noticed this stain after running the bike the hardest I've ridden it so far...about 60 miles of choppy trails. My level is down a tad (but still visible on top)...it could be down from air pockets being filled in after the hard ride.

I've never messed with a water pump before so I'm just checking here first. Not looking forward to draining it again...the drain location on the motor makes a mess since it's tucked in pretty far.

Thoughts?
 
Unfortunately you'll need to drain the coolant again (I made a funnel thingy out of some cardboard to keep the coolant off the engine which sorta helped)

Once drained remove the two coolant hoses where they attach to the water pump housing. Then remove the three bolts holding the water pump housing onto the engine. Take care to not pull the backing plate out of the engine---it needs to stay in place---you want the housing to separate from the backing plate. Once the housing is removed flip it over and you'll see a simple o-ring. That's pretty much it.

Are you positive it's coolant you're seeing here? It is possible for these to leak oil around the water pump. If it's oil there are a few more steps one of which prevents you from having to re-time the entire engine (ask me how I know! haha) but overall not much more difficult. Hope this helps,

Andrew
 
Rot Box said:
Are you positive it's coolant you're seeing here? It is possible for these to leak oil around the water pump. If it's oil there are a few more steps one of which prevents you from having to re-time the entire engine (ask me how I know! haha) but overall not much more difficult. Hope this helps,
Click to expand...

Actually...I just assumed it's coolant since that's the last thing I messed with on the bike...could very well be oil! Thanks for the detailed explanation on the water pump! If it's oil...whats the trick for fixing it without having to re-time the engine?

Thanks again!
 
...also, is there no overall gasket that goes between the water pump housing and the head? I'm not seeing one on the parts fiche'. The o-rings are the only thing keeping the fluids sealed in?
 
Force10 said:
Hey all,

Looks like I have a leak around the water pump:

View attachment 80155

Is a new O ring all that looks like is needed? I did just do a flush of the old coolant and replaced with Engine Ice. I drained the old coolant, then left the drain plug out and rinsed a little distilled water through it. Installed the drain plug and put a mix of 50/50 distilled water and vinegar and ran it for a few minutes. Drained it and rinsed some more distilled water through it. Then I filled it with engine Ice.

Pretty sure I did everything right. I noticed this stain after running the bike the hardest I've ridden it so far...about 60 miles of choppy trails. My level is down a tad (but still visible on top)...it could be down from air pockets being filled in after the hard ride.

I've never messed with a water pump before so I'm just checking here first. Not looking forward to draining it again...the drain location on the motor makes a mess since it's tucked in pretty far.

Thoughts?
Click to expand...
I wouldn't worry about that slight seepage right now. Just keep an eye on it.

Good luck.
 
Trenchcoat85 said:
I wouldn't worry about that slight seepage right now. Just keep an eye on it.

Good luck.
Click to expand...

Yeah...I figured I would take it for another ride and see if it gets worse or better...lol. If I do need to change the o-ring...I might as well do all the seals in there while I'm in there, including the valve cover gasket.

Thanks!
 
rancher1 said:
The valve cover gasket is meant to to be reused so do not bother with it unless it is hammered.
Click to expand...

Someone pointed out before about the gasket sealer oozing out of the area in the upper right of the pic on the valve cover gasket (the half egg shape area). I imagine it was done because the gasket is 12 years old and a little rough.

If I get a new one...do I need to put any RTV or similar sealer on it? Is that what's called for by Husky...or should a new gasket with cleaned surfaces be enough?
 
There is just a simple o-ring that seals the water pump cover. Remove the 3 bolts, and ensure you are separating the cover from the backing plate. Because if you pull the cover out with the backing plate stuck to it, you could mess up the timing. This is because the main timing gear is held in place by the water pump shaft. Don't be intimated, its a super simple procedure.

There is only a couple seals up there. The valve cover gasket which is reusable, and does not require any RTV on it. The water pump has the o-ring on the cover, and then there is the seal for the shaft which keeps out any oil. I wouldn't suggest messing with as long as you don't have water/oil mixing.
 
banana944 said:
There is just a simple o-ring that seals the water pump cover. Remove the 3 bolts, and ensure you are separating the cover from the backing plate. Because if you pull the cover out with the backing plate stuck to it, you could mess up the timing. This is because the main timing gear is held in place by the water pump shaft. Don't be intimated, its a super simple procedure.

There is only a couple seals up there. The valve cover gasket which is reusable, and does not require any RTV on it. The water pump has the o-ring on the cover, and then there is the seal for the shaft which keeps out any oil. I wouldn't suggest messing with as long as you don't have water/oil mixing.
Click to expand...

Good info...Thanks! I'm not sure if it's oil or coolant that's leaking. I also read that it doesn't hurt to put a little silicone on the bolt threads that go into the housing...I guess it can leak through the threads occasionally.

I did see this pic as a way to pull the shaft without losing timing by bungeeing the drive gear:

imageproxy.php.jpg

Looks good on paper...I will only go down that road if I'm forced to though.

Thanks again for the suggestions all!
 
I'd assume that engine ice, like regular coolant, washes off with water. Oil will not wash off. A quick test and then at least you know what you're dealing with.
 
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