
07/20/05, 03:16 AM
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Join Date: Apr 2005
Location: Texas
Posts: 1,504
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I have only worked on car /coach "air" and it aint that dificult , (aparrt from where they hide the evaporator ) the bigest problem is you need a real good vaccum pump to suck all the air out of the system before its gassed up , anyone that can solder plumbing can solder air conections ,(we use silver solder) you need to know how much gas goes in the system and that is by weight , ( bathroom scales with the gas cylinder on them ) how you find that out i dont know , to little or too much gas and it wont work , as you will not have a gas " sniffing" wand the best way to check for leaks is to leave the vacum guages hooked up overnight (switched off)and see if the system looses vacum.the gas system MUST be perfectly tight .
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