Posted by Texasmark1 on August 04, 2020 at 04:27:54 from (172.243.92.145):
As mentioned earlier, parts guy at the local Branson dealership took the initiative to find a part number for an expansion valve when the parts list only showed the evaporator assy. $43 TTL. Put it all back together with the new hose from the compressor to the condenser that I initially thought/maybe was leaking and pulled the vacuum. Couldn't get a hard vacuum and in short, the O rings in my 134a test equipment (fairly new) adapters needed changing.
Reason I am posting this is this surprise surprise (Gomer Pyle). Here you are scratching your head, trying to find the leak in your system, when your instrumentation that's telling you that you have a leak is the thing leaking. Other thing is that I found that finger tight isn't good enough to keep the hose connectors tight when you are doing a lot of moving around of the gauge set....pliers needed. HF has a kit of the HXXX type green washers for about 8 bucks and had a size to fit all my connections, including the O rings in my test equipment (gauge set) connectors.
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