A/C Recharge (without knowing proper quantity)

[FSERVICE]

The only tool that I have seen is for hvac applications not auto, could you point me in a direction to find it, thanks.

mine is made by FJC.. Ill try get the PN# for you when I find what the %$@$^# I done with my book!! I know its here someplace

 

[AndrewC]

Thanks fservice, I also own a jb, the 6 cfm version, half the price of the snap on ones and better quality if you ask me. I had one of those air powered ones but it wouldn't pull down past about 20 inches of mercury. Will make the system work but not as well as with a proper vacuum pump.
I just checked snap ons website the have a version of that tool but they want too much money. $180. Ill see what fjc has.

 

[willie59]

Ill try get the PN# for you when I find what the %$@$^# I done with my book!!

Oh, that's happens to you as well eh?

 

[AndrewC]

I found their p/n 2750. It comes up with $140 on ebay. Does that sound about right?

 

[Birken Vogt]

Here are some good articles on automotive AC theory.

http://www.imcool.com/articles/aircondition/index.html

 

[td25c]

One thing I noticed about the few pieces of equipment whith A/C we have ( two trucks and a farm tractor) is they all hold around 4 lbs of refrigerant.If Im just adding refrigerant to the system I use a thermometer in the vent duct and when I see 50 degrees F I quit filling .

I forgot to add when working A/C systems dont overlook other simple issues like the condenser & evaporator core's being stopped up with debris,loose fanbelt ,etc.Pretty common problem on farm & construction equipment thats working in the dirt. Also when I am charging up the farm tractor I run the engine at 1800 rpm to help on the air flow accross the condenser.on motor vehicals like cars & trucks it helps to put a large fan in front of the vehical to help the air flow as to simulate highway speed when charging a system.Without good air flow ya aint gettin any cool air.

 

[FSERVICE]

Oh, that's happens to you as well eh?

yes especially here lately, since iv been so busy!! I don't think it has anything to do with getting older!!! lol

 

[FSERVICE]

I found their p/n 2750. It comes up with $140 on ebay. Does that sound about right?

that's bout what I paid.. still haven't had time to find the catalog. it is worth every penny in the time it will save you over the season!!

 

[Cjmech]

The first thingH