| Re: [GMCnet] A/C head pressure [message #324957 is a reply to message #324954] |
Sun, 15 October 2017 00:17   |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
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While that is the modern way to charge a system, I have worked on several vehicles that have needed to be tweeked after using the weight method. On my Colorado it was charged three times by weight using two different machines. It still ended up being over charged. I have worked on several new Hondas that were checked by dealers using the weight method only to have them freeze up from being undercharged. My Blazer was charged using weight and a machine only to end up slightly under charged. So charge by weight and be prepared to get out the gauges if it needs a little tweeking.
I charge a completely empty r-134 system using a 30 pound bottle and a set of scales. Usually that is close enough.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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