Re: [MBZ] 1982 300SD AC Question

> On August 15, 2016 at 11:25 PM Jim Cathey via Mercedes > wrote: > Fill it, and rejoice. Agreed. At least with R12 you can fill until the bubbles go away in the sight window. 120 psig is about 102 degrees F. If you were moving much heat to the condenser, it would be

Re: [MBZ] 1982 300SD AC Question

> > went to 120 high side and 7 low side. So my R12 is quite low Yes. Ignore the pressures for the moment, and look at the _temperature_ scale on the gauges. Your high-side temperature would be what? Just how much heat do you think you're able to take out of the 'hot' side at that

Re: [MBZ] 1982 300SD AC Question

You have a low charge Sent from my iPhone > On Aug 15, 2016, at 9:42 PM, Scott Ritchey via Mercedes > wrote: > > I put gauges on it today. Pressures were 72 hot side and 79 cold side > before engine start. I attribute the difference to my cheap, old gauges > (pre

Re: [MBZ] 1982 300SD AC Question

I put gauges on it today. Pressures were 72 hot side and 79 cold side before engine start. I attribute the difference to my cheap, old gauges (pre Harbor Freight gauges from JC Whitney). After engine start pressures went to 120 high side and 7 low side. So my R12 is quite low but would that

Re: [MBZ] 1982 300SD AC Question

If you have gauges you can at least find out if it's very low on charge or if there's something mechanically wrong. Or you can throw in 12oz of R12 and see what happens. It's common for old cars to leak. Mitch. ___ http://www.okiebenz.com To search list

Re: [MBZ] 1982 300SD AC Question

Sent: Sunday, August 14, 2016 9:28 AM > To: Mercedes Discussion List <mercedes@okiebenz.com> > Cc: Mitch Haley <mi...@mitchellhaley.com> > Subject: Re: [MBZ] 1982 300SD AC Question > > Ambient could mean no or little flow, > cold (refrigerated) m

Re: [MBZ] 1982 300SD AC Question

Ambient could mean no or little flow, cold (refrigerated) means pressure drop and boiling refrigerant. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to:

Re: [MBZ] 1982 300SD AC Question

i.net>o > Subject: Re: [MBZ] 1982 300SD AC Question > > You really cannot tell by feel what’s going on in the AC system without > hooking up the gauges. Could be low refrigerant. > > > > On Aug 14, 2016, at 12:04 AM, Scott Ritchey via Mercedes > <mercedes@okie

Re: [MBZ] 1982 300SD AC Question

Drops in temperature occur where there are drops in pressure. If it happens where there's no intended orifice/expansion valve, there's probably something restricting flow at that point. Is this a serial flow condenser, and did something hit the condenser pinching the tube flat where the

Re: [MBZ] 1982 300SD AC Question

You really cannot tell by feel what’s going on in the AC system without hooking up the gauges. Could be low refrigerant. > On Aug 14, 2016, at 12:04 AM, Scott Ritchey via Mercedes > wrote: > > I noticed the AC on my 300SD wasn't cooling today. This car had not been >

[MBZ] 1982 300SD AC Question

I noticed the AC on my 300SD wasn't cooling today. This car had not been run for months. The line from the compressor to the radiator was quite hot but the top of the AC radiator was barely warm. The bottom of the radiator was cold and the receiver-dryer (and everything downstream) was cold.