Camshaft bearings 650 02

hofsviken · Jan 28, 2017

Hi!

I have pressed in new bearings on the camshaft on my 650 Berg. I read somewhere in the manual that the bearing should be pressed in so you just got a little clearance between the bearing and the auto decomp device. But I cant find any information on how far pressed in the other bearing should be.

Should that be pressed in so it is bottoms in the cam shoulder? If i do, I think it looks like the cam sprocket are not in the accurate centerline between the two cam sprockets.

Andreas

ned37 · Jan 28, 2017

every one i have done got seated. no problem

bushmechanic · Jan 28, 2017

its true the cam sprockets often dont line up

so if you can use the cam bearing placement to correct sprocket alignment without interfering with the decomp then go for it

i used washers to make sure the cam bearings didn't move and did some machining to the cam shoulder

hofsviken · Jan 30, 2017

Yes, thats what i did also. Pulled the bearing a little out from the camshoulder and a washer in between. I think it is weird that the manual dont say anything about it, as it is a important thing considering sprockt/chain wear and the load on the cam bearings.

ned37 · Jan 31, 2017

my oem '04 450 bearing on the sprocket side was loose enough to find a center on it's own

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Camshaft bearings 650 02

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