Tech Area > A/C, Heating and Cooling
What tools are needed?
TexasT:
So... I'm reading up on this 152a conversion for my vehicles. I'm pretty handy(If you're not hansome, you better be handy, Red Green) and Ive added 134a to vehicles before and they blew cool again for a while. My stuff is generally older. Nothing under 100k miles. Ive never gotten into an a/c system as I was always told you had to have special tools and then they started not selling r12 to us commoners so I just never learned.
This brings us to now. I want to get the a/c in several of my vehicles, including the T, up and functioning. I read that it can be accomplished with 152a office duster. Seems simple enough. Problem is I don't have any of the specialized tools for an activity like that.
So i make a trip through amazon.com to see just what I can find. I think I need a vacuum pump and a set of gauges and probably a can tap for the duster cans.
http://www.amazon.com/Mastercool-85530-3-IN-1-Mount-Valve/dp/B0002SQLGC/ref=pd_sim_auto_8
So the question surfaces, do I need a two stage pump or will a single do? How much cfm does it need to pull? Im in the set that likes to buy it right and buy it once and have it last a lifetime.
http://www.amazon.com/Robinair-15500-VacuMaster-Vacuum-Pump/dp/B000O1C47M/ref=pd_sim_auto_14
http://www.amazon.com/Robinair-15115-VacuMaster-Single-Stage/dp/B005CO9FDW/ref=pd_sim_auto_18
Then comes the gauges. Lots of options there too. I think I'd like a set with a carrying case to protect them when not in use.
http://www.amazon.com/R134A-Manifold-Gauge-Set-85530/dp/B000LDPTR0/ref=sr_1_12?s=automotive&ie=UTF8&qid=1376233144&sr=1-12&keywords=Mastercool
Any suggestions are welcome.
TIA
Also thinking I'd like one of these to blow out the lines and such.
http://www.amazon.com/Mastercool-91046-A-Conditioner-System-Flush/dp/B000HAUXLE/ref=sr_1_25?s=automotive&ie=UTF8&qid=1376233243&sr=1-25&keywords=Mastercool
Charlief1:
If you want to buy a suction pump that's fine but if you just need 1 for a while you can get them as a loan a tool from AZ. For the gauges, go to harbor freight and you can get them in a hard case at reasonable prices. Since the G body cars don't have a lot of special fasteners a good set of wrenches and a core tool along with a set of small picks to get o rings off is all you need. The only other thing you might need is a pair of small.medium forceps to remove and install the orifice tube.
To flush the system a very small funnel can be made out of a syringe with a hose on the bottom. You can get a 3 pack of large ones from tractor supply. If you want to bring it down we can do it in the shop Rich and I've got a suction pump so you don't need to buy or rent one if you don't want.
SuperSix:
All of the items you linked look great, and prices are good too.
Single stage is fine, that one you linked looks the same as the HF one I have, I paid around the same for mine. Same goes for the gauges.
You can buy the A/C liquid flush at a local parts store, Napa, etc..
Charlie - I never fiddled with the low pressure sensor on the accumulator like some do. Leave well enough alone?
A/C is scary until you understand how it operates, with some help from friends. Charlief is the A/C guru. I have learned a lot from Jim Testa too.
Replace the valve cores too:
http://www.amazon.com/gp/product/B0023TOKWU/
You will need to replace the accumulator - disregard what Amazon says fits - here's the correct A/C Delco PN: 15-1681
http://www.amazon.com/gp/product/B000JZ8X32/
This is the orifice tube I used:
http://www.amazon.com/gp/product/B001A4V78E
R134 connector kit I used:
http://www.amazon.com/gp/product/B002G1PC40
Charlief1:
R-134 operates at different pressures so changing the pressure setting on the switch is a good idea. On R-12 I think the switch was set between 30 and 35 PSI so you only want it slightly lower. The hig side is going to go higher and the low side slightly lower than stock.
SuperSix:
Cool, thanks
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