<VV> Changing the oil pressure switch on a turbo engine

[R]

I would pull the Alternator for the much better access , making the job easier in the long run.

RCS

> On Mar 28, 2019, at 12:39 PM, Jim Simpson via VirtualVairs <virtualvairs at corvair.org> wrote:
> 
> Bryan Blackwell and David Malcolm pointed out what looks like the solution
> -- the MAC SC40 socket.
> 
>  I'd checked in the shop manual under Engine Mechanical Special Tools and
> didn't find anything there for the oil pressure switch.  But I hadn't
> thought of looking under the Electrical Special Tools -- sure enough, GM
> showed the Kent Moore J-21757 socket.  It has a relatively short, fat
> section to fit the oil pressure switch with a narrow top that should clear
> the various fuel and oil lines on the turbo engine.
> 
> Some versions of the MAC SC40 look like an exact match of that socket.  But
> if you go out and look for one, be aware that not all MAC SC40 sockets are
> the same!  Most of the ones I found on-line look like a more modern version
> -- tall and fat, similar to the socket that I already hand that wouldn't
> clear the lines.  Look for a 3/8" drive version with a flaired end and
> narrow drive end.  (Check the shop manual under Electrical Special Tools to
> find an illustration.)
> 
> I found one in ebay and ordered it.  I'll find out in a couple days if
> Bryan, David and I am right.
> 
> (The K-M J-21757 is also out there, but costs anywhere from 4x to 7x as
> much!)
> 
> Jim Simpson
> Group Corvair
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