Vacuum Pump Rental for A/C system??????

[swhytie]

Ok..well as you can tell from my wanted post, I will be getting into my A/C refurbish soon I hope, throwing a feeler out here to see if anyone has a pump they would be willing to rent or lend once I get my hoses swapped, the system will need a purge and vacuum restored, I am curious if anyone knows where to rent one or wants to help a fellow offroader out and try and get the old a/c back and running..had it checked last year and mechanic told me everything seemed ok execpt hoses were busted...

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[dwcjwerfner]

If the lines are leaking is the system not empty? Then just put new hoses on and fill it with that replacement coolant.

dj

 

[swhytie]

I was uner the impression that once things couldnt keep pressure, there was air that gets into the system and if you change hoses etc you have to vacuum it to clear it from everything before refilling anything.

 

[dwcjwerfner]

Somebody with more knowledge than me would have to respond to that, I have done it the other way but I don't know if that is optimum.

dj

 

[Big-Hoe]

If your leak was on the low pressure side and the compressor was continuing to run then you would be drawing in moisture. Regardless, anytime you open the system it should be purged with dry nitrogen and vacuumed. Moisture can cause a lot of problems in an a/c system, trust me, I am a commercial refrigeration mechanic. That being said, I've got all the gear and I'd be happy to help out a fellow offroader. Only takes about 45 minutes, assuming all your connections are leak free. I would have to charge for the refrigerant though, 20$ a pound, because that belongs to the boss.

 

[swhytie]

If your leak was on the low pressure side and the compressor was continuing to run then you would be drawing in moisture. Regardless, anytime you open the system it should be purged with dry nitrogen and vacuumed. Moisture can cause a lot of problems in an a/c system, trust me, I am a commercial refrigeration mechanic. That being said, I've got all the gear and I'd be happy to help out a fellow offroader. Only takes about 45 minutes, assuming all your connections are leak free. I would have to charge for the refrigerant though, 20$ a pound, because that belongs to the boss.

No worries..I have no issues paying..was looking at the system tonight looks more like the hose Receiver to Condenser I think..I have to losen the rad support to see the other end...the other hoses look almost new..so I will definately drop you a line once I get that hose changed and see...I am hoping the purge will let me know if anything else is leaking..the mech that did the intial diagnostic was pretty vague other than his 700$quote for hoses...but he didnt even pout my fan shroud on right I had to put it back on when i got home..so my trust in what he thinks was wrong and price was doubtful to say the least.

 

[Big-Hoe]

Whenever you are ready, we can pressure test at 250 psi to make sure there are no other leaks. what was happening do you know? Or did he just say you needed hoses?

 

[swhytie]

A/C didnt work when I got the jeep..kid told me it needed a hose...and the one i mentioned earlier really is rusty...mech sais it was totally peirced because he couldnt keep pressure in the system when he tested... but he couldnt get to it easily...the rest of the systemp seems good to go and some hoses look pretty new...so guessin ill swap that hose and then try a pressure test and go from there...I just need to make sure I get the right hose...thinking ill take it off....and cover the fitings where it was plugged in and take it to the parts shop make sure im getting the right piece..

 

[Big-Hoe]

I'll add a little bit of of uv dye. That way you can pick it up later if it is a very small leak. Not much to a car's a/c system. Good luck with the fittings though, if they are steel nuts and aluminum threads like a Chev, be very careful and patient.

 

[Mlorint]

The reciever/dryer should be changed and you will need some oil for the system.

 

[swhytie]

The reciever/dryer should be changed and you will need some oil for the system.

That just for good measure or does it really go bad when it is not used for quite some time???? want to do it right..but not looking to put tons of money just to see if it works????lol...

 

[Mlorint]

It's a dryer, they absorbe mositure. If it was open for a couple of weeks maybe, months, it should be replaced. A/C is not cheap to fix, cheap solution is red tek, that ctc sells. If its been open for a long time things like the compressor and the pressure switches may be no good.