A/C Compressor Brands
09-01-2019, 02:37 PM
#31
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Year: 1996
Model: Cherokee (XJ)
Engine: 242 cui
If you have a little bit of extra money to spend, get this kit.
https://www.ebay.com/itm/R134-HVAC-A...item1ecbe0c61f
Super easy to use and it will pay for itself on the first use. You can go to Autozone and buy the little bottles of R134 to fill it with (do not get the ones with sealant in them!). They are $20 each and you get $10 back as a core charge when you return them. Should take about 3 bottle to fill the system. So call it all in $120 to do it your self the first time and $30 each time after that. Or you can just fork out $115 for a 30 lb bottle of R134 and refill it many many many times.
If your site glass is now black, then ya, sounds like a flush is next (black = metal particles in the oil). Replacing the condenser would be recommended but the flush may get everything out.
https://www.ebay.com/itm/R134-HVAC-A...item1ecbe0c61f
Super easy to use and it will pay for itself on the first use. You can go to Autozone and buy the little bottles of R134 to fill it with (do not get the ones with sealant in them!). They are $20 each and you get $10 back as a core charge when you return them. Should take about 3 bottle to fill the system. So call it all in $120 to do it your self the first time and $30 each time after that. Or you can just fork out $115 for a 30 lb bottle of R134 and refill it many many many times.
If your site glass is now black, then ya, sounds like a flush is next (black = metal particles in the oil). Replacing the condenser would be recommended but the flush may get everything out.
https://www.harborfreight.com/air-va...ors-96677.html
along with a manifold kit
09-01-2019, 06:47 PM
#32
Senior Member
Will one of these do for drawing the vacuum, since I am now the proud owner of a 3 gal compressor?
https://www.harborfreight.com/air-va...ors-96677.html
along with a manifold kit
https://www.harborfreight.com/air-va...ors-96677.html
along with a manifold kit
09-01-2019, 07:30 PM
#33
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Year: 1996
Model: Cherokee (XJ)
Engine: 242 cui
The one I linked to says it can only take 90 psi input and I have a 100 psi compressor. How long does it take to draw down the system with the vac he postd?
09-01-2019, 08:30 PM
#34
Senior Member
It's not about pressure alone, it's about the volume of air that can be sustained at that pressure. Even cheap 12V tire pumps for inflating tires can frequently reach 90 psi but you're not going to be able to run a venturi-type vacuum pump with one.
09-01-2019, 10:01 PM
#36
Senior Member
Three gallon air tank is not much capacity. I have a 5HP 20-gallon compressor in the garage and I would be reluctant to try running one of those air-driven vacuum pumps with it. They need a continuous stream of a lot of air and you'll be vacuuming the AC system for 1/2 hour minimum (more is better).
The listed specs for the vacuum pump say 4.2 CFM at 90 PSI is required. The specs for the 3 gallon 100 psi HF "hot dog" compressor say it can deliver 0.6 CFM at 90 PSI. I'm afraid it's not even close.
The listed specs for the vacuum pump say 4.2 CFM at 90 PSI is required. The specs for the 3 gallon 100 psi HF "hot dog" compressor say it can deliver 0.6 CFM at 90 PSI. I'm afraid it's not even close.
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