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

Views: 99

Reply to This

Replies to This Discussion

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

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

Attachments:

RSS

Photos

  • Add Photos
  • View All

Forum

Rear Main Seal & Transmission Pump Seal

Started by Jordan Johansen-Moe in 1963/64 Cadillac Specific Discussion. Last reply by CHRIS CARLSON 20 hours ago. 1 Reply

Hey everyone, I need to replace my transmission input seal before spring starts, I’ve been losing a lot of fluid post Sunday drive. I figured I’d do the rear main seal service bulletin at the same…Continue

Heater Control Valve

Started by Michael Monson in Wanted to Buy. Last reply by Michael Monson on Thursday. 2 Replies

Looking for a heater control valve 9.795 for my 1964 Deville.  ThanksContinue

64 Brakes

Started by Jeff Donaldson in General Discussion. Last reply by Logan Robb on Tuesday. 4 Replies

Hi,It's time to do a brake job on my Fleetwood. When I imported my car from the US to Canada I had to have my car safety inspected before I could license it in the Privince of BC. After the…Continue

Burning Rubber

Started by Kim K Kaiser in 1963/64 Cadillac Specific Discussion. Last reply by Kurt Feb 22. 7 Replies

Out of curiosity,, is the 63 64 engine capable of burning rubber off of a stop light?   Not a hold the brake and rev up and release, but from a stop, to burn rubber power?I know mine wont because i…Continue

Blog Posts

1963 RHS A/C kick panel - photos needed

Posted by SK on June 2, 2025 at 2:20pm 2 Comments

Could someone post front and back photos of the 1963 right-hand kick panel with A/C?

My car didn’t come with the original kick panels, so it's a bit of a mystery to me how I should cut the backing board and carpet to fit around the A/C.

Many thanks,

-Samu

'63 Tailfin Tales

Posted by Mark Mata on February 22, 2025 at 5:00pm 9 Comments

New old stock seat material

Posted by Ray Schick on August 22, 2024 at 6:25pm 2 Comments

I bought this seat material thinking that it’s…

Continue

Loud air moving sound within carb with cleaner removed

Posted by Dave Fehrle on March 23, 2024 at 3:23pm 8 Comments

While checking my Carter carb with engine running, I took the air cleaner off and there was a very loud hissing sound of air. I placed a piece of paper over the carb and it didn’t move up or down, is this normal?

Videos

  • Add Videos
  • View All

© 2026   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service