Howard wrote:

I have seen alternators on diesel engines that have a vacuum pump attached
directly to the back..... The one that comes to mind is the alternator for a
Pugeot 504 diesel.   This vacuum pump is intended to supply vacuum for
brakes and I suspect also heater controls.  It is quite small and
light....the combination charging and vacuum system would be an elegant
solution.
                                                 H.W.

 
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