Cam ring removal

[tlmark]

Ok, guys, I have searched and searched
But can't find anything I'm fitting a Thorspark ignition but how do you get the old cam ring out?

[trevinoz]

Sometimes with great difficulty.
Heat the end plate to say 150 degrees and bump it over something with a clearance hole for the cam ring.  It may take a few goes, depending on the amount of corrosion around the ring.

[groily]

Probably not a manual one I'm guessing, as they move easily as a rule. But the fixed ones can be hard. A neat and easy-to-make  weapon for getting two-lobe camrings out is shown here: http://www.brightsparkmagnetos.com/workshop/BitsAndBobs/index.htm

[tlmark]

Yeah it’s a auto

[tlmark]

Cam ring successfully removed 

I soaked it in WD40 and left it for an hour or so, then I used a large flat blade screwdriver moving around the edge and slowly tweaked it out.