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Bearing for counter balancer driving shaft

Joined Aug 2005
56 Posts | 0+
Rhode Island
Anyone know why the counter balancer driving shaft is a two seal bearing? It seems that the seals would prevent oil from getting to the bearing. Has anyone removed one or both of the seals?
 
Ok, right after I posted this it occurred to me that the bearing is sealed because the crank chamber is in vacuum - much the same reason we need crank seals. But still, has anyone removed the clutch side seal in the bearing? This would still leave the seal on the crank side and allow oil to the bearing from the clutch side.
 
Hi Mogly406
I'm going thru a rebuild as we speak and was going to ask this very same question and then discovered your post.
Sorry I haven't got an answer but I was thinking that it would be better to remove the crank side shield to allow a better supply of oil into it.
I see you didn't get many replies but I suppose it doesn't hurt to ask again.
Any reason why it has both the rubber shields fitted??

Coops
 
The crankcase is not sealed- there is a 8 mm hole in the LHS case up by the counterbalancer drive gear that goes through to the gearbox that means the crancase is not a sealed unit.

Seems the reed valve functions just fine without the crankcase being totally sealed.
The adventureous who felt the need to do so could opt for a shielded (vs sealed) or an open bearing if they felt game............or as above post suggests removing one seal so gearoil lubes it.

I'm certainly not recommending it though.... :wink:
 
The metal shields on the bearings will keep heavy grease in but aren't oil tight. There was a talk about this long ago concerning cam bearings with Dale, and if I am remembering correctly the extra oil was at the risk of allowing swarf into the bearing if the engine suffered any other failure. Don't remember the verdict, maybe do a search on similar subject. 05 and up engines have a jet that sprays the bearing and I think the inner shield is now off. Don't know if the factory Husaberg site still has the 05 intro literature listed, but that info was on there. Would get some splash from the crank with the inner shield off and less likely to see swarf than on the clutch side, but is shielded from direct oil splash by balancer drive gear. Good question.
dan
 
Thanks for the replies guys.
Oil still gets in with the shields on but it would have to be limited and the grease must get out cos there was none in there.
I don't think it would do much harm to remove 1and I was thinking the crank side cos the oil should be cleaner - theoretically speaking.
Bit of a mystery why they used the rubber vs metal shields as well. It may be more a case of keeping clutch bits out of the crank area.
Sort of a pseudo oil seal like on the crankshaft.

Dan
Are you sure the >= 05 dropped the inner shield?

Anyone else confirm?

Coops
 
Husaberg had an engineer drawing at the 05 intro that showed the oil jet inward from the bearing. Only logical way I know of to spray it would be to remove the inner shield. Some of the engine guys have surely had an 05 apart and could say for sure.
dan
 

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