My AC compressor is leaking from the groove I marked with the little screwdriver. It is a broken shaft seal, correct? Where can I get a new seal and do I really need the seal remover tool J-9392 for removal and installation? I already searched at Rockauto without luck.

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Kurt 
STV eliminator kit is the right part to install when using. 134A  —so thank you for that 

When the kit cycles the compressor as  It is designed to do (  it reduces compressor wear and affects gas mile in a positive way ) it is now suppling  the pressures in the AC system that the 134A Freon requires to Cool as intended 

I presently have 134a in my system since 2006 with no issues with the compressor leaking and is my original compressor 

The shop that did my Freon replacement never did install the STV eliminator into my own car and I learned of it after that was done 

My system does not get cold enough as it stands 

I wil be going thru the entire system both heat and Ac of my comfort control system  and I do have the option to Use R12 Freon as my neighbor was in the auto AC repair business 
Mostly no immediate emergency as I use the car mostly with the top down but I have acquired all the parts and am prepared to replace the compressor if final testing requires that is needed 

I do not plan on using the AC much but still need it to be working as it should even if  only once in a while 

I actually miss the heat not  working more than the AC  as I loved coming back at night with the cooler temps when the top is down having that heater blasting keeping me toasty warm in the car ( very enjoyable ) 

The heat these large cubic inch engines turn out when called on is another amazing creature comfort 

The 20 degree winters in NY  most  of my life were sure proof of how warm these cars can keep you and that can be very enjoyable as well 

Enjoy and Stay Safe 

In additon to my steeering project,, i have been wanting to change the complressor on my 63 as well,, i read aobut those lighter replacemnt compressors.   Mine is the original and at a minimum,  the bearing is locked up,,, i had same problem on 73 and replaced the bearing,,, but this thing is 10 years older,, and i want less stress on the engine.  i do miss ac too,, i can t hear my music with  all the windows down,,,

SO,,, do you have to take the car to an ac person to unhook all those hoses..and do you have to ge t anothe kit of some sort to hook up the new hoses that have the new refriderant..i have read they have gases and pressure,,,so what is the best way to go bout that

I took my hoses to a business that rebuilds hoses.They take the fittings and splice them to new barrier rubber hose. I used my original hoses for years with the A6 compressor running R134a with no issues. I just decided to replace the 56 year old rubber hoses when I installed the new compressor. The compressor is a drop-in replacement so it works with the stock mounting & hoses. I did need a metric cap screw to attach the hose manifold to the compressor.

Kurt

i do hope your hose repair has turned out as well as expected so that when you show it off to your lady friends you get the desired response ( OH what a wonderful looking ——-Cadillac engine bay you have ) 

I could see it requiring some serious attention after 56 years —- LOL !!

Enjoy 

When the shop filled the system with R134a it was seal.
I drove to a meeting with some friends to Austria with the AC on all the time at very warm weather and had a leak at the new shaft seal again. But probably the shop filled too much R134a. As I know now, the system should be filled not more than 3.35 pounds.
I found a good chart here: https://ricksfreeautorepairadvice.com/convert-auto-r12-system-to-r1...

So, probably the pressure is too high. I hadn't time to check it again, but I'm planning it in the next weeks.

I'll keep you updated

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