Husky 350 Air Leak/bearing question

[Aggie 2012]

Howdy gents

I've got a husky 350 that has an obvious sir leak. When I crank it up it revs to half throttle.

Pressure tested and doyens it leaking from the fly wheel side bearing/seal.

After disassembly i have found that these seals and bearings are manufactured together.

But look at these bearings and tell me if this might be my problem. (Ball bearings are exposed on one and covered on the other)

The bearing on top came from the side that was leaking.
Is it missing the inside seal and could this have cause my air leak?
Also,
Where did the rest of this seal go?

Thanks for your help

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[HarleyT]

Here is the ipl pic.

 

[cus_deluxe]

Thats not a seal on the bottom one, just the cage for the balls. Top one just has a different type of bearing cage. I THINK you can get the seal seperate from that bearing, but im not 100% on that. I believe its proprietary so you have to get it from husky.

 

[cus_deluxe]

Looks like harleyt's ipl shows you cant get them seperate....

 

[Aggie 2012]

Thanks for yalls input. Is it common for the air leak to occur around the outer part of this seal? I have had it apart before but maybe I assembled it wrong?


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[HarleyT]

Since they are both side the same part number, I would say that one bearing might be flipped.

 

[HarleyT]

I would say that the bottom one is flipped. But I am not familiar with that model.

 

[HarleyT]

Looks like they went the long way around the barn..

 

[blsnelling]

Put it back together using a sealant on the OD of the bearing/seal.

 

[blsnelling]

BTW, those seals aren't really meant to be replaced. They are pressed on and not easily removed.

 

[Aggie 2012]

Thank you Harley.

Brad,
What your saying is just replace both bearing and seal as one?

Just need to know what I should order to fix my air leak.

If you don't think I should tamper with pulling the seal/bearing apart I might should just buy both together?


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[blsnelling]

Thank you Harley.

Brad,
What your saying is just replace both bearing and seal as one?

Just need to know what I should order to fix my air leak.

If you don't think I should tamper with pulling the seal/bearing apart I might should just buy both together?


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Yes, they are generally replaced as a unit. However, if the bearing is good and it's only leaking around the outermost OD of the bearing/seal, then I would re-assemble with a coat of sealant. Use something like ThreeBond 1194, Yamabond, Permatex MotoSeal, Loctite 518.....

 

[Aggie 2012]

Okay thank you sir.
I have been sealing the riser with yamabond #4 so I will apply some to the outer part and let y'all know how I come out.

I sure appreciate everyone's help


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[blsnelling]

Pay particular attention to the corners where the case halves meet up against the crank seal.

 

[HarleyT]

Since you are going to replace them anyway, take the top one apart, see if the seal is on the other side of the bearing.

 

[HarleyT]

It looks like the bearing seal should be on the hidden side, looks like the inner race shoulder is different on that side
anyway, might have something to do with it. Besides the shield shouldn't be facing the crankcase side anyway, since it needs lube.

 

[blsnelling]

These are both the same bearing, seal and cage. The only difference is that the seal was pressed onto the opposite side of the bearings, showing opposite sides of the ball retaining cage.

 

[HarleyT]

The bearing comes out of the cup, doesn't it?

 

[HarleyT]

http://www.ebay.com/itm/Crankshaft-...701895?hash=item21251ee2c7:g:iHkAAOSwHHFY-b2S

 

[Aggie 2012]

Can I ask another question?

Is it normal to have to put sealant on the crank seals during re assembly?
I guess what I am asking is should I do this every time I split and rebuild a saw. (Not just this one)



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