Wanted : Vacuum schematic for Cadillac 1964 w/ Master Switch

[Cadillac1955]

Im looking for a vacuum schematic for Cadillac 1964 Climate Control A/C with the Master Switch

[Warren Rauch]

 I know they must have made an oversize diagram like you need. (I have non a/c and electric) But these are nothing more that the smaller ones that are in section 13 of the 1964 shop manual.
I also found a copy of the Student book for the 1964 Training center a/c course. It isn't a lot different than the shop manual either.Just rearranged .The Jan 1964 Roundtable filmstrip " Weather Forcast" also dealt with A/c, but not in as much detail.Warren

[Cadillac1955]

I wonder if You have and can post a Exploded schematic from any Serviceman manual?? The Master Switch came a little bit later, so I cant locate it in the Shop Manual...

[Warren Rauch]

  The term Master Switch does not appear in the 1964 literature. So I'm assuming you are refering to the comfort control panel on the dash. Look at fig.13-17 in the 1964 shop manual. near the center is a blob with the numbers 1 thru 5 on it. That I think is what you are looking for , even though it is labeled "vacuum valve on control head"
In the May 1965 issue of the Serviceman , there is a new kit offered.Part #148 4983 it is called a Master Switch kit for 1964 a/c systems. It calls for using it in cases where the master switch has failed. It does not give details of the kit and says that ,details are included in the kit. Warren