[W126 Coupe] A/C Question About R12 & R134

[Michael de Holl]

Thanks for the help. I'm convinced now I have an R134 system.

Mike

----- Original Message ----- 
From: "Josh Allen" <heyallen at null-ptr.net>
To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
Sent: Saturday, August 29, 2009 6:38 PM
Subject: Re: [W126 Coupe] A/C Question About R12 & R134



> My 134 fittings all have a small thread on the inside, where the schrader 

> valve and the cap screw in.

> The r12 fitting is threaded both inside and out, and only about 3/8" 

> overall diameter as opposed to the roughly 1/2" of the r134 fittings.

>

> -Josh

>

> Michael de Holl wrote:

>> Thanks for the quick reply. Looks like the connection is a push on but 

>> not sure. The connection has threads on the inside that the blue cap 

>> screws onto. What do you think?

>>

>>     ----- Original Message -----

>>     *From:* Mike R. <mailto:mramay at att.biz>

>>     *To:* 'Mercedes Coupes Mailing Lists' <mailto:mbcoupes at mbcoupes.com>

>>     *Sent:* Saturday, August 29, 2009 12:03 PM

>>     *Subject:* Re: [W126 Coupe] A/C Question About R12 & R134

>>

>>     The R134 connections are push on (no threads) and the R12

>>     connections are threaded. Whatcha got??

>>

>>

>>     Mike R.

>>

>>

>>     *From:* mbcoupes-bounces at mbcoupes.com

>>     <mailto:mbcoupes-bounces at mbcoupes.com>

>>     [mailto:mbcoupes-bounces at mbcoupes.com] *On Behalf Of *Michael de Holl

>>     *Sent:* Saturday, August 29, 2009 8:40 AM

>>     *To:* Mercedes Coupes Mailing Lists

>>     *Subject:* [W126 Coupe] A/C Question About R12 & R134

>>

>>

>>     Just got my 91 SEC back from a trusted Mercedes specialist

>>     independent shop for an A\C charge. He said the car needed a

>>     partial charge and the temp now at the vent was 42 degrees. On the

>>     paper work it says he used R134A refrigerant. As far as I know my

>>     system is still R12. There are no tags or decals saying anything

>>     different. Can you put R134 into a R12 system? What damage can

>>     this cause? Its the weekend so I can't verify what he put in until

>>     Monday. Any suggestions?

>>

>>     Mike

>>

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.

>

>