Make: De Tomaso
Engine Size: 351C
Refrigerant Type: R-12
I have a Robinair 17700A R/R/R unit. Use is just for my own cars, and I have not been able to fully utilize it as the recovery tank is not full enough for auto refill mode. I've been using it for evac and filling from small cans.
After some time trying to find a large R-12 tank to load into the unit, today I scored a sealed 30# Igloo tank for $300.
In my preliminary steps to fill the unit's recovery tank, I found the air purge port - the one with the yellow hose - has what appears to be a leaky schrader valve.
After removing the yellow hose from the recovery tank, the port (not the hose) is releasing air. Low pressure. Both the red and blue hoses are removed, and the red/blue recovery tank valves are closed with no leaks. I've tried to tighten the yellow schrader valve with a core tool but it is already tight.
I know it is a purge port,but it seems the schrader valve should close with the hose removed. Do I have a problem?
If so, what do I need to do to fix this?
A good cap will seal it-- or keep pushing in and out on the depressor- exercise it a few times- see if it finally seats-- it has been depressed lately for a long time--kinda like me....
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......
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