Posted 7/3/2012 20:03 (#2464879 - in reply to #2462927) Subject: Re: Peterbilt air conditioning
SW Iowa
I end up charging A/C systems in any equipment with the engine around 1800 rpms. When it will run and not pull down to 10 psi, at 1800 engine rpms, then its about the right amount. If you charge it at idle, then run at highway speeds, or a sprayer at 2700 rpms, you will pull the low side into a vacuumn and low pressure will kick out.
Peterbilt air conditioning
