64’ A/C Power Servo - Vacuum Actuator

[Jacob Foster]

Gents, good morning!

I’m looking for advice on how to fix the A/C Power Servo on my 1964 Cadillac Deville. The unit itself seems to be working correctly, but the vacuum actuator is leaking off. Has anyone had luck finding/replacing just the vacuum actuator or is there a way to repair the original one that’s leaking? I’m referring to the large black & silver vacuum actuator, not the 7 port valve.

I would be interested in purchasing a good used unit too if the price is fair.

Thx - Jacob

[Bernie Long]

Hi Jacob - Cadillac Tim replaced the vacuum actuator on my '70 Cad's AC servo a while back.  Works great.  You can find him at http://www.cadillactim.com.  He also publishes a great series of books, one for each year, that describe in detail how to trouble shoot the '64 thru '80 Comfort Control systems.

No connection, just a satisfied customer.

Happy Motoring!

Bernie

[Linda M. Brooks]

Hi Jacob,

I agree with Bernie - Cadillac Tim replaced the actuator on my Servo as well.  It is a little smaller in size but works great.  I don't think I'd recommend a NOS one (on eBay for example), due to the age of the rubber.  I also purchased his '64 Comfort Control book.  He is highly recommended!

Another satisfied customer,

Linda