[Kahuna]

A couple of months ago I removed my right idler gear that drives the right mag. Details as to why here.

I now wish to install a backup alternator in my vac pad location. Looking at the detail drawings of my IO-540 C4B5 case, Im unable to tell if the gear that drives the mag is also the gear that drives the vac pump, or if the vac pump is driven off the main cam gear.
Please advise.
Thanks

 

[rocketbob]

You're ok, its driven off the cam gear.

 

[Kahuna]

You're ok, its driven off the cam gear.

Yeah!. Thanks Pooooner.