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 The previous version was outdated and no longer supported.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

water pump seal 85 400

My cover for the 400WRX needed a new seat for the seal. I cleaned it out, filled with JB Weld and had a local shop bore the seat in position.
 
pg 13 86 2 t manual shows the seal with the spring facing the water jacket...? ill go with that i rekon as the water pressure would hold the seal closed...maybee??
 
The bearings are the seal for the oil.
Any seal goes with the spring to the fluids. ;)
the weep hole under the water pump is there to stop coolant from going in to the oil and leak externally.

Steve
 
all good stuff, spring out is the go...thanx for the comment, nothing worse than getting old and going .."now how did that come apart again?? why didnt i take a photo of that??"
 
The weep hole let’s us know the seal isn’t sealing anymore.

Good question on which way the lip of the seal goes. I have seen even the crankbearing seal on the tranny side installed backwards. The lip side meaning the spring side goes towards the liquid. Meaning the coolant side. With the crank seal on the tranny side the lip goes towards the tranny oil.
 
I put mine spring towards the water the theory being that the coolant increases pressure as it gets hotter. My radiator caps are 11 lb.
 
which way does the water pump seal face ....:rolleyes:
Click to expand...

I have wondered about seal lip orientation when replacing water pump and crank seals. After reviewing the attached page I will be installing the seal lip on water pumps towards the engine coolant due to the pressure, and crank seal lip towards the transmission as the gear box oil level bathes the seal.

The SD seal mentioned below refers to double lip seals, i.e. seals with main sealing lip and a protective dust seal.
Seal Lip Orientation.png
 

Attachments

Don’t forget to prelube any seal and shaft where it rides. If left dry the seals life can be cut short.

Note, if any shaft has a score line from a seal don’t install the seal back to its orginal location leave it out just a tad so it rides on a new flat clean surface. This happens a lot with harmonic balancers on car engines. It’s just food for thought for other applications. I’m just sharing knowledge.
 
suprize said:
so the oil is against the open side with the spring...ive heard differently?
Click to expand...

The seal in the pic that Auto posted shows the seal behind the impellor is correctly installed.

As I recall when I pulled my cover apart, there was an inner seal on the inner side of the weep hole because the bearing itself was not sealed
 
Bigbill said:
With the crank seal on the tranny side the lip goes towards the tranny oil.
Click to expand...


I agree with this logic, but ALL the factory seals I've pulled out have had the spring toward the crank. So, that's how I put them back in. I have seen replacement crank seals installed the way Bill describes and, guess what? They work fine, too.

Now, with the high and hot water pressure, I like to put the spring toward the coolant. Maybe it's just me, but it works.
 
On my 400, the outer water pump bearing has a sealed side. I put that facing away from the crank. I put the water pump seal with the spring facing the impeller. That way if the water pump seal leaks it drips out the weep hole and nothing gets into the trans oil.
 
The correct seal is double lipped (lipped in both directions) that way you can deal with pressure from either side....

Andy.
 
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