[MBZ] R-12 Freon Charge
Noticed a busted ac hose on my 1979 240D. System is R12. Got my 609 certification. I assume with a broken line all freon is out. Does anyone have a link or a procedure for charging they system with R-12. I assume I have to add mineral oil 4 oz? (how do you get that in). I read that I may need 2.9lbs. I can get the R-12 anything else I should know special equipment. No way I am going to convert to other refrigerant if I can help it. Do I need to clean system or can I just charge the system? What is the best way, will the cans do it or do I need something else. New ground for me. Any sea stories or help/link would be appreciated Regards Tom Scordato - Original Message - From: wilton strickland [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, March 13, 2006 4:02 PM Subject: [MBZ] R-12 Freon Rcvd 12 12 oz. cans R-12 Freon today. Wilton ___ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] R-12 Freon Charge
Noticed a busted ac hose on my 1979 240D. System is R12. Got my 609 certification. I assume with a broken line all freon is out. Oh yeah! Does anyone have a link or a procedure for charging they system with R-12. Any FLAPS book on automotive AC will tell you enough. I assume I have to add mineral oil 4 oz? (how do you get that in). If you need to add some, and you only do if you think you've lost any, you can just pour it into an open hose. I can get the R-12 anything else I should know special equipment. I absolutely don't think anybody should touch their AC system unless they have a set of service gauges and a vacuum pump suitable for drying. Do I need to clean system or can I just charge the system? Did it get dirty? How long was it open to the atmosphere? You'll need a new receiver/drier, as its desiccant has probably saturated by now. But I don't know that any 'cleaning' will be necessary. It depends. Usually not. What is the best way, will the cans do it or do I need something else. Cans are fine. Just do it right. See book! Any sea stories or help/link would be appreciated There's mine: http://cathey.dogear.com/cwair.html -- Jim
Re: [MBZ] R-12 Freon Charge
For ac specific things the forum at www.aircondition.com is mighty handy, as well as the free AC advisor program that you can download from their site that you can use to calculate system pressure at a given ambient temp. Don't add the full system amount of oil unless you empty all the oil out of the system , or youll have too much in there. If the hose was in a low spot, you may need a littl, if it was high, shouldn't need any. ( if you put too much oil in, your system will have to run a higher pressure than normal to cool ) If adding for the heck of it, don't put more than an oz in it.If you want to know fr sure, dump out the compressor and the drier and blow out the condensor and evapurator, and then add teh factory oil amount ( If you want, you could flush it at this time ) Get a new drier.( add the apropriate oil for the drier, there should be a spec around somewhere for how much oil settles in each componant , or as said, if you flush the system, you can add the full amount) Might not be a bad idea to replace all the orings while you're at it. Then vacuum out the system, Close the gauges ant turn off vac pump, and watch. it should hold vacuum for 15 minuits, I like to see them hold for 1/2 hour or longer. Then vac for an hour or so and fill it up. ( use the ac advisor program to get the appropriate high side reading ) Put on a jacket and drive :-) --Robert Tom Scordato wrote: Noticed a busted ac hose on my 1979 240D. System is R12. Got my 609 certification. I assume with a broken line all freon is out. Does anyone have a link or a procedure for charging they system with R-12. I assume I have to add mineral oil 4 oz? (how do you get that in). I read that I may need 2.9lbs. I can get the R-12 anything else I should know special equipment. No way I am going to convert to other refrigerant if I can help it. Do I need to clean system or can I just charge the system? What is the best way, will the cans do it or do I need something else. New ground for me. Any sea stories or help/link would be appreciated Regards Tom Scordato - Original Message - From: wilton strickland [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, March 13, 2006 4:02 PM Subject: [MBZ] R-12 Freon Rcvd 12 12 oz. cans R-12 Freon today. Wilton ___ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net ___ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] R-12 Freon Charge
thanks Jim - Original Message - From: Jim Cathey [EMAIL PROTECTED] To: Mercedes Discussion List [EMAIL PROTECTED] Sent: Monday, March 13, 2006 8:15 PM Subject: Re: [MBZ] R-12 Freon Charge Noticed a busted ac hose on my 1979 240D. System is R12. Got my 609 certification. I assume with a broken line all freon is out. Oh yeah! Does anyone have a link or a procedure for charging they system with R-12. Any FLAPS book on automotive AC will tell you enough. I assume I have to add mineral oil 4 oz? (how do you get that in). If you need to add some, and you only do if you think you've lost any, you can just pour it into an open hose. I can get the R-12 anything else I should know special equipment. I absolutely don't think anybody should touch their AC system unless they have a set of service gauges and a vacuum pump suitable for drying. Do I need to clean system or can I just charge the system? Did it get dirty? How long was it open to the atmosphere? You'll need a new receiver/drier, as its desiccant has probably saturated by now. But I don't know that any 'cleaning' will be necessary. It depends. Usually not. What is the best way, will the cans do it or do I need something else. Cans are fine. Just do it right. See book! Any sea stories or help/link would be appreciated There's mine: http://cathey.dogear.com/cwair.html -- Jim ___ http://www.striplin.net For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
