A/C Question Urgent
Thread Starter
|
Junior User
Joined: Mar 2008
Posts: 88
Likes: 0
From: Thomasville, Georgia
A/C Question Urgent
Where is my low side service port at? I bought the retrofit valves to go to R-134a and I need to make sure I know where to put them. Thanks guys. I have a 1977 Ford F150 with a 400
Thread Starter
|
Junior User
Joined: Mar 2008
Posts: 88
Likes: 0
From: Thomasville, Georgia
No i bought the valves to retrofit the r-12 and bought some r-134 but for some reason i can't get the frion to go in. It's like the pressure won't hold. The compressor works fine and i bought the gauge and the can with the oil in it as well but I can't get it. It's reallly frustrating lol. It hooks up to the valve fine but it will not take the can, it's like something is blocking it.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
You HAVE flushed the system and had the remaining R-12 removed, right?
On Yorks there is a small valve stem that you have to open, just like a faucet to get the system to charge.
In the attatched picture, where the hoses hook to the compressor, the little acorn nut looking covers are where you'll attach the retrofit valves. Remove the acorn nut cover and attach. Then on the fitting, on the opposite side of where the hose attathes, there is a little cover. Unscrew the cover, that will expose the valve stem. You need to open this to get the compressor to take the refrigerant.
On Yorks there is a small valve stem that you have to open, just like a faucet to get the system to charge.
In the attatched picture, where the hoses hook to the compressor, the little acorn nut looking covers are where you'll attach the retrofit valves. Remove the acorn nut cover and attach. Then on the fitting, on the opposite side of where the hose attathes, there is a little cover. Unscrew the cover, that will expose the valve stem. You need to open this to get the compressor to take the refrigerant.
Thread Starter
|
Junior User
Joined: Mar 2008
Posts: 88
Likes: 0
From: Thomasville, Georgia
Thank you so much for the info. I will get that R-12 removed tomorrow. The guy i bought the truck from said there wasn't any left but I will go have it checked just in case.
Trending Topics
Certified Thread Hijacker
Joined: Aug 2001
Posts: 14,441
Likes: 59
You have to evac the R12 and ALL of the R12 oil, it isn't compatible with R134 PAG oil.
You must replace the receiver/drier as it is full of R12 crud and oil. You could skimp and not replace it, but it's just buying time.
Also keep in mind the R134 isn't going to cool anywhere near as well as R12 in an R12 system.
Josh
You must replace the receiver/drier as it is full of R12 crud and oil. You could skimp and not replace it, but it's just buying time.
Also keep in mind the R134 isn't going to cool anywhere near as well as R12 in an R12 system.
Josh
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
The oil in the system needs to be flushed but the York compressors have a sump (like a gas engine) that needs to be drained also.
Moderator & parts slinger
Joined: Feb 2007
Posts: 50,158
Likes: 5,786
From: S/W Missouri, Polk county
Just a mini hijack to thank Mike and Bullitt for knowing so much and helping spread the word.
I am still a learning fool on here, thanks all!
Now back to the a/c lesson.
I am still a learning fool on here, thanks all!
Now back to the a/c lesson.
Hotshot
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Thanks for the compliment, glad to help if I can.
Senior User
Joined: Aug 2007
Posts: 172
Likes: 0
Like the others have said, R-12 and 134 don't play well together. Keep the same system and use R-12 for best results or install new system for 134. After you evacuate the system, when you get to that point, don't forget to make sure it holds a vacuum or all your money in R-12 will dissipate into the atmosphere. Worth doing is worth doing right. A complete 134 aftermarket system will cool very well in our small cabs. I'm keeping mine original R-12 because I can. Good luck!
Post Fiend
Joined: Jan 2006
Posts: 5,037
Likes: 9
From: Kasson, Minnesota
When I replaced my system with a new York compressor and receiver-drier, I had it charged with R-134 and it cools very well. I'm sure not as good a R-12, but I cant keep mine on high cool for very long or I get too cold. I also have cleaned the cooling coil and all my ducting so my factory system is like new. I'm sure that makes a difference. I wanted a newer Sandon compressor, but for some reason the adapter bracket, compressor, and pulley would not line up with my other pulley's, so I just went with a rebuilt York. I'd still rather have the Sandon compressor though.