[Fot] Cam Bearings expansion

[Larry Young]

Oops, I got that wrong.  When you hit the cam it relieves the stresses 
on the surface and causes it to curl away from where it is struck. Of 
course, you will have to keep checking it and move around to hit it at 
different spots.  The chisel should be curved and blunt to spread out 
the blow.  You should hold the cam and push gently in the direction it 
should move.  This is one of those operations that would be easier after 
watching an old time machinist do it.

On 1/7/2015 3:56 PM, Larry Young via Fot wrote:
> It is not difficult to straighten cams yourself. You can do it with a 
> blunt cold chisel and hammer, but I prefer to use an air hammer with a 
> blunt rounded chisel.  Use V blocks and a dial indicator to check it 
> and decide where it is bent. You hit the cam between the lobes, which 
> relieves the stresses and causes it to curve up. It seems counter 
> intuitive, but that is the way they bend. It has been a while since 
> I've done it, but I believe that is how it's done with these cast iron 
> blanks.  If it still doesn't fit, then have it ground to fit as Greg 
> suggested.
>  - Larry Young
>

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