A/C evacuation and charge ?s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ihatericeburners · 05-10-2009, 01:40 PM

So... I am want to evac my new a/c system on my truck with a non-automotive evac pump thats used on homes. I have the hoses. Can i do this?
Sould I?

PLEASE HELp! Tanks!

ihatericeburners · 05-10-2009, 02:27 PM

What i want to do is use the quick connect for charging a system, that comes in the kit from Autozone, and hook it up to the manifold and pump it down.

Suggestions please

**truckdude239** · 05-10-2009, 02:40 PM

do u have freon in the system right now? i would say no because any left over r-22 in that system mixxed with r-134a would wreckt he system. if your just pulling a vaccuum it shouldn;t be a problem, most shops do not charge much to remove freon from cars and trucks

Zeke · 05-10-2009, 03:29 PM

Not a problem, if anything it will just pull a vacuum faster. My neighbor is in the HVAC business and I borrow his pump all the time, but you really should pull the vacuum and charge the system thru a set of manifold gages.

sneakysnake · 05-11-2009, 10:06 AM

Did you replace any parts other than the r-12 to 134a quick connect?The oil should at least be replaced and the filter dryer.Any good vac pump will work to evac sys.

ihatericeburners · 05-11-2009, 12:57 PM

My system is new, NO freon.

My dad is out of the home HVAC bussines for a while now. He thinks he can do it i just dont want to trust my $1500, brand new system to him without testing some waters first.

We have a manifold but the problem is that his hoses are different. They are not compatible to the pump.

big_al_71 · 05-11-2009, 02:52 PM

You are in florida do a road trip to Miami and I will have it done for you as we have the Robinair machine here in the shop....

05-10-2009, 01:40 PM	#1
ihatericeburners Registered User Join Date: Nov 2008 Location: new port richey, fl Posts: 118	A/C evacuation and charge ?s So... I am want to evac my new a/c system on my truck with a non-automotive evac pump thats used on homes. I have the hoses. Can i do this? Sould I? PLEASE HELp! Tanks!

05-10-2009, 02:27 PM	#2
ihatericeburners Registered User Join Date: Nov 2008 Location: new port richey, fl Posts: 118	Re: A/C evacuation and charge ?s What i want to do is use the quick connect for charging a system, that comes in the kit from Autozone, and hook it up to the manifold and pump it down. Suggestions please

05-10-2009, 02:40 PM	#3
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,233	Re: A/C evacuation and charge ?s do u have freon in the system right now? i would say no because any left over r-22 in that system mixxed with r-134a would wreckt he system. if your just pulling a vaccuum it shouldn;t be a problem, most shops do not charge much to remove freon from cars and trucks __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

05-10-2009, 03:29 PM	#4
Zeke Active Member Join Date: Jun 2002 Location: L.A. Lower Alabama Posts: 453	Re: A/C evacuation and charge ?s Not a problem, if anything it will just pull a vacuum faster. My neighbor is in the HVAC business and I borrow his pump all the time, but you really should pull the vacuum and charge the system thru a set of manifold gages. __________________ 1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin

05-11-2009, 10:06 AM	#5
sneakysnake It's a catastrophic success. Join Date: Jan 2003 Location: Oklahoma Posts: 2,077	Re: A/C evacuation and charge ?s Did you replace any parts other than the r-12 to 134a quick connect?The oil should at least be replaced and the filter dryer.Any good vac pump will work to evac sys.

05-11-2009, 12:57 PM	#6
ihatericeburners Registered User Join Date: Nov 2008 Location: new port richey, fl Posts: 118	Re: A/C evacuation and charge ?s My system is new, NO freon. My dad is out of the home HVAC bussines for a while now. He thinks he can do it i just dont want to trust my $1500, brand new system to him without testing some waters first. We have a manifold but the problem is that his hoses are different. They are not compatible to the pump. Last edited by ihatericeburners; 05-11-2009 at 12:59 PM. Reason: spelling

05-11-2009, 02:52 PM	#7
big_al_71 Registered User Join Date: Jun 2008 Location: South Florida Posts: 11,375	Re: A/C evacuation and charge ?s You are in florida do a road trip to Miami and I will have it done for you as we have the Robinair machine here in the shop.... Attached Images __________________ Get your facts first, and then you can distort them as much as you please!!!!!. Sylvester's build thread >>>http://67-72chevytrucks.com/vboard/s...ht=big+rebuild Last edited by big_al_71; 05-11-2009 at 02:52 PM.



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