How Much R134 for rear a/c Suburban? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Nodnarb76 · 08-27-2013, 10:20 AM

Going to recharge my A/C today at my shop (work for a car dealership).
Lost some R134 over the weekend. After we evacuate it, how much should I tell my techs to put in it? How much oil? It's a 454 R20 1987 Suburban.

1966Stepside · 09-05-2013, 06:23 PM

Has it been converted to R-134? Up til ~92 or 93 they used R-12 which is much more expensive now since it's getting rare.

zaccaglin · 09-06-2013, 01:16 PM

5.25 pounds for r12. I believe with 134a you only use 80% of the r12 amount.
Posted via Mobile Device

08-27-2013, 10:20 AM	#1
Nodnarb76 Registered User Join Date: May 2013 Location: Mississippi Posts: 501	How Much R134 for rear a/c Suburban? Going to recharge my A/C today at my shop (work for a car dealership). Lost some R134 over the weekend. After we evacuate it, how much should I tell my techs to put in it? How much oil? It's a 454 R20 1987 Suburban. __________________ 1987 R20 Suburban LQ4/4L80e swap: http://67-72chevytrucks.com/vboard/s...d.php?t=693824

09-05-2013, 06:23 PM	#2
1966Stepside Registered User Join Date: Feb 2011 Location: North, AL Posts: 135	Re: How Much R134 for rear a/c Suburban? Has it been converted to R-134? Up til ~92 or 93 they used R-12 which is much more expensive now since it's getting rare. __________________ Truck Pics http://s886.photobucket.com/albums/a...ew%20Purchase/

09-06-2013, 01:16 PM	#3
zaccaglin Registered User Join Date: Apr 2012 Location: Auburndale, FL Posts: 716	Re: How Much R134 for rear a/c Suburban? 5.25 pounds for r12. I believe with 134a you only use 80% of the r12 amount. Posted via Mobile Device __________________ Zaccaglin 1998 Chevrolet C1500 Ext. Cab 350 Former Rig: 1985 Chevrolet K20 Suburban 6.2L Detroit/TH400/NP208



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