A proper running car will pull to about 19" at idle which on the hot days of summer around here it is pretty good.
Trampas -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rich Thomas Sent: Wednesday, August 22, 2007 3:19 PM To: Mercedes Discussion List Subject: Re: [MBZ] A/C Question Engine vacuum only pulls down to like half atmospheric (13-14" maybe), not really enough to do any good in an AC system. --R Trampas wrote: > I changed one on my 300SD and it was relatively easy, on the 420SEL there > was an extra brace and it took half the day. If I had to do it again I would > remove the dash pad first. > > Also to vacuum out the system I have used a vacuum line from the engine. > That is start engine connect AC gauge to intake manifold through vacuum line > and let engine run (assuming gas engine). However I now have a cheap vacuum > pump powered from air compressor that I got from harbor freight for under > $20. > > Trampas > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Jim Cathey > Sent: Tuesday, August 21, 2007 11:49 PM > To: Mercedes Discussion List > Subject: Re: [MBZ] A/C Question > > >> Depends on which car. The expansion valve on the 124 is between the >> firewall behind and inboard of the brake booster. On the 126 I expect >> it's still behind and above the brake pedal (and an absolute BEAST to >> work on). >> > > For the 126 lie on your back with your head next to the gas > pedal. Look up. You can see it. Just. I have no idea how > one would actually get a wrench on it, much less two of them > to crack the fittings loose. BEAST is an understatement. > > -- Jim > > > _______________________________________ > http://www.okiebenz.com > 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > _______________________________________ > http://www.okiebenz.com > 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > _______________________________________ http://www.okiebenz.com 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
