matchframe
05-31-2012, 08:22 AM
I replaced the drier and vacuumed/charged the system yesterday. I don't have a vacuum pump so I did that the old military way.... I used the engine vacuum to pull the system down. Only problem with doing it this way is the deepest pull you can do is about 25-27 pounds. Ideally you need to pull the system down to 30 plus pounds.
I found my old A/C manifold which is old school R-12. I cleaned it up and converted it to R-134 with new hoses and adapters.
http://i10.photobucket.com/albums/a122/matchframe/BDG/Jeep85.jpg
Here is a vacuum port I connected the A/C manifold to:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-3.jpg
I changed the manifold connectors to accommodate the vacuum hose which connects to the engine intake manifold:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Jeep84-1.jpg
Here is the complete set up:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-4.jpg
I ran the engine for about 30 minute at about 2,800 RPM
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-6.jpg
Showing the vacuum:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-5.jpg
I closed off the manifold and the vacuum held for about 30 minutes. I then charged the system and it blows cold air. I still sort of feel like I may be chasing a small leak later, but I guess time will tell.
I found my old A/C manifold which is old school R-12. I cleaned it up and converted it to R-134 with new hoses and adapters.
http://i10.photobucket.com/albums/a122/matchframe/BDG/Jeep85.jpg
Here is a vacuum port I connected the A/C manifold to:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-3.jpg
I changed the manifold connectors to accommodate the vacuum hose which connects to the engine intake manifold:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Jeep84-1.jpg
Here is the complete set up:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-4.jpg
I ran the engine for about 30 minute at about 2,800 RPM
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-6.jpg
Showing the vacuum:
http://i10.photobucket.com/albums/a122/matchframe/BDG/Untitled-5.jpg
I closed off the manifold and the vacuum held for about 30 minutes. I then charged the system and it blows cold air. I still sort of feel like I may be chasing a small leak later, but I guess time will tell.