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RV-2 Compressor Shaft Seal #1284516 08/13/12 11:28 AM 08/13/12 11:28 AM
Joined: Feb 2005 Posts: 174 Creedmoor, NC, USA 74Charger OP member
74Charger OP member Joined: Feb 2005 Posts: 174 Creedmoor, NC, USA	What is the maximum recommended pressure used for leak testing? I have a small leak around the shaft seal at test pressure of 175 PSI. When I reduce pressure to 100 PSI I cannot pick-up the leak with electronic leak detector. Because crankshaft seal is on low side of system where pressures should not reach 175 PSI, should I be concerned? I plan on using R-12 to re-charge to get back to factory performance. I will be changing compressor oil back to mineral oil as well. The 134-A conversion just doesn't do the job.

Re: RV-2 Compressor Shaft Seal [Re: 74Charger] #1284517 08/13/12 02:27 PM 08/13/12 02:27 PM
Joined: Jan 2003 Posts: 5,784 Corpus Christi, TX shanker master
shanker master Joined: Jan 2003 Posts: 5,784 Corpus Christi, TX	great question...I'm very interested in the answer as my compressor is the last thing I have to rebuild on my R/T to get my factory A/C working again The Federal Government has not yet learned that you cannot legislate morality 1970 Coronet R/T FF4/FF8/V85/V1G 440/Auto/3.23 1970 Coronet R/T FK5/FK5/V8W/V1W 440/Auto/3.55 1970 Super Bee TX9/TX9/V8W/N96 383/Auto/3.91 1975 Duster 360 VS29L5 Daily Driver

Re: RV-2 Compressor Shaft Seal [Re: 74Charger] #1284518 08/13/12 03:45 PM 08/13/12 03:45 PM
Joined: Jan 2003 Posts: 25,881 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,881 Rio Linda, CA	What are you using to pressurize the system? If in doubt replace the seal with new. The INTERNET, the MISinformation superhighway

Re: RV-2 Compressor Shaft Seal [Re: John_Kunkel] #1284519 08/14/12 09:30 AM 08/14/12 09:30 AM
Joined: Feb 2005 Posts: 174 Creedmoor, NC, USA 74Charger OP member
74Charger OP member Joined: Feb 2005 Posts: 174 Creedmoor, NC, USA	I'm using a small amount of r-22 for trace gas, and pressurized nitrogen.

Re: RV-2 Compressor Shaft Seal [Re: 74Charger] #1284520 08/14/12 10:22 AM 08/14/12 10:22 AM
Joined: Jul 2010 Posts: 2,091 Delray beach, Florida P Performance Only top fuel
Performance Only top fuel P Joined: Jul 2010 Posts: 2,091 Delray beach, Florida	Quote: What is the maximum recommended pressure used for leak testing? I have a small leak around the shaft seal at test pressure of 175 PSI. When I reduce pressure to 100 PSI I cannot pick-up the leak with electronic leak detector. Because crankshaft seal is on low side of system where pressures should not reach 175 PSI, should I be concerned? I plan on using R-12 to re-charge to get back to factory performance. I will be changing compressor oil back to mineral oil as well. The 134-A conversion just doesn't do the job. the R134a conversion should work fine of you adjust the expansion valve. most people i know that have done the conversion overfill the system and have bad results from that as well. i've converted a large number of cars and never had a problem getting 48-52 degree air out of the vents on a 90+ degree day. machine shop owner and engine builder

Re: RV-2 Compressor Shaft Seal [Re: Performance Only] #1284521 08/14/12 09:56 PM 08/14/12 09:56 PM
Joined: Feb 2005 Posts: 174 Creedmoor, NC, USA 74Charger OP member
74Charger OP member Joined: Feb 2005 Posts: 174 Creedmoor, NC, USA	I don't see any way to adjust the TXV on this model. This is a typical valve with power-head and remote bulb. Valve is not the block style. Learn me something new. With R-12, I think supply temps 10 degrees less than what you mentioned are possible. Maybe I'm wrong but I have the R-12 to try it.

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