GLAD to hear it worked out for you, but for future reference. by the time the sight glass is completely free of bubbles in a converted to R134 system it is OVERCHARGED due to the difference in how the original R12 and the conversion R134 "behave".
This is a known "FAQ" for converted mobile AC systems.
We all like all the cooling we can get, but for longevity being slightly UNDERCHARGED has worked out better in my experience.
Having a little less cooling from a system that continues to work is better than one that blows a hose or breaks a compressor, IMHO.
The lubricants that are used with R134 aren't as effective in older compressors originally designed for mineral oil and compressor life MAY be shorted, ESPECIALLY when "worked to the max".
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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