Removing Dog Teeth Ring from a gear

[Sam]

Hi folks,

I have some left over gears from a gearbox that exploded some time ago I also own a lathe so as an experiment, I thought I'd see how hard it is to do a bit of gear lightening.

To do to this I need to remove the 'Dog Teeth Ring' (or whatever it's called) from the gear.
My understanding is that it's just pressed on, but I can't seem to get it off.

The 'Dog Teeth Ring' is smaller than the gear so I can't get a hold to remove it.

I was impatient, so I started on the other side (see attached pictures).
I didnt drill right through until I can remove the Dog Teeth and cut into the other side

Any ideas how on how to remove it?

Thanks in advance
Sam

[giulia_veloce]

Hi Sam

give me a call today and I will tell you

02 9939 2069

Robert

[colcol]

On a Holinger proper race car gearbox, the dogs are pressed on with about .004 inch or ,1 mm press fit, that is the piece you are trying to remove is smaller than the gear, have a look on the spline where the dog is pressed on, and see if it has been projection welded, that is the spline melted to stop the dog coming off, if it has, get a little pencil grinder and grind the welds away, and see if you can get some thin bearing pullers under the dog to press it off, Colin

[Sam]

Hi everyone

Thanks for all your help with this

I called Robert this afternoon and he explained how it's done.    (thanks Rob)

Sam

[giulia_veloce]

All good Sam

Just waiting for a phone call back about that car we discussed
Always good talking Alfa stuff with like minded people.

Robert