Re: [MBZ] 123 A/C info
compressor shouldn't be allowed to operate--correct? Anyone know where the low pressure switch and/or relay reside on an '84 300D? Should be right on the receiver/drier. -- Jim
Re: [MBZ] 123 A/C info
Zeitgeist wrote: Wow, thanks! When I attempted to access those myself, I just got an error message. Has the site been mirrored somewhere else, possibly different than my bookmarked link? I have had problems linking to some of the sites. In the case of later volumes where some of the pdf file names have letters at the end (like 83-510ha.pdf) I have discovered that if I change the "ha" to "HA" the link WILL work. Other links SEEM to work with one browser and not with another. There have been times when if I tried to connect to a link with one browser I couldn't connect, I could with another browser - AND if I copied the that link back to the first browser (that wouldn't previously display the site), it would display the site (perhaps from the cache the other browser had established). Marshall -- Marshall Booth (who doesn't respond to unsigned questions) "der Dieseling Doktor" [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
Re: [MBZ] 123 A/C info
Wow, thanks! When I attempted to access those myself, I just got an error message. Has the site been mirrored somewhere else, possibly different than my bookmarked link? On 7/5/06, Marshall Booth <[EMAIL PROTECTED]> wrote: All located right here: http://mb.braingears.com/123_DISK2/program/Climate/83-500.pdf http://mb.braingears.com/123_DISK2/program/Climate/83-506.pdf http://mb.braingears.com/123_DISK2/program/Climate/83-508.pdf http://mb.braingears.com/123_DISK2/program/Climate/83-510.pdf It sometimes takes a LONG time to download! Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (216k) '84 300D (214k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
Re: [MBZ] 123 A/C info
Zeitgeist wrote: Hey, can someone with a 123 CD* post one or all of the following pdfs--I have no idea how large these files are, so whichever contains the most descriptive data for the A/C system in my '84 300D. 83-500 83-506 83-508 83-510 I'm operating double-blind here, since I barely know A/C and don't know the 123 system at all. The compressor clutch wiring was unplugged when I got the car, but when I attach it, the compressor runs whenever the key is switched on--irrespective of system charge level. All located right here: http://mb.braingears.com/123_DISK2/program/Climate/83-500.pdf http://mb.braingears.com/123_DISK2/program/Climate/83-506.pdf http://mb.braingears.com/123_DISK2/program/Climate/83-508.pdf http://mb.braingears.com/123_DISK2/program/Climate/83-510.pdf It sometimes takes a LONG time to download! Marshall -- Marshall Booth (who doesn't respond to unsigned questions) "der Dieseling Doktor" [EMAIL PROTECTED] '87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)
Re: [MBZ] 123 A/C info
On my 79 TD, the LP switch (if I remember right) is down low on the left on the refrigerant pipe, I think there is a fitting there with the referenced device, and a wire(s) coming out of it. I think it traces back to the compressor. It is fairly easy to get at, and to see if it is open/closed with an ohmeter. I recall that testing this device and jumping it was how I determined that my system was actually working and that it was low refrigerant that was keeping it from working (contrary to what the former owner/Benz mech told me). Alas, a gas leak kept it from working for more than a day after I put some more in it. --R Zeitgeist wrote: Thanks Joe! So, is it possible that the compressor clutch is always engaged whenever the key is switched on, due to a faulty low pressure switch or compressor relay? Remember, this system presently has no refrigerant, so I assume the compressor shouldn't be allowed to operate--correct? Anyone know where the low pressure switch and/or relay reside on an '84 300D? TIA Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (216k) '84 300D (214k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG ___ 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
Re: [MBZ] 123 A/C info
Thanks Joe! So, is it possible that the compressor clutch is always engaged whenever the key is switched on, due to a faulty low pressure switch or compressor relay? Remember, this system presently has no refrigerant, so I assume the compressor shouldn't be allowed to operate--correct? Anyone know where the low pressure switch and/or relay reside on an '84 300D? TIA Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (216k) '84 300D (214k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
Re: [MBZ] 123 A/C info
Those files are mainly for manual a/c, Casey. I've scanned the wiring diagram from my paper manual for acc2, stripped from list copy, which I think might provide much of what you need. 83.8-603/15. Those things aren't really legible in the cd version anyway. joe -- next part -- A non-text attachment was scrubbed... Name: wiring diagram w123 acc2.pdf Type: application/pdf Size: 77062 bytes Desc: not available Url : /pipermail/mercedes_okiebenz.com/attachments/20060704/4ea2461f/attachment.pdf
Re: [MBZ] 123 A/C info
The compressor should run almost all the time that the engine is running if the climate control is anywhere besides Off or Economy. (assuming there's at least SOME refrigerant in there). Levi On 7/4/06, Zeitgeist <[EMAIL PROTECTED]> wrote: Hey, can someone with a 123 CD* post one or all of the following pdfs--I have no idea how large these files are, so whichever contains the most descriptive data for the A/C system in my '84 300D. 83-500 83-506 83-508 83-510 I'm operating double-blind here, since I barely know A/C and don't know the 123 system at all. The compressor clutch wiring was unplugged when I got the car, but when I attach it, the compressor runs whenever the key is switched on--irrespective of system charge level. TIA *Braingears doesn't host this data for some reason. Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (216k) '84 300D (214k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG _
Re: [MBZ] 123 A/C info
Hey, can someone with a 123 CD* post one or all of the following pdfs--I have no idea how large these files are, so whichever contains the most descriptive data for the A/C system in my '84 300D. 83-500 83-506 83-508 83-510 I'm operating double-blind here, since I barely know A/C and don't know the 123 system at all. The compressor clutch wiring was unplugged when I got the car, but when I attach it, the compressor runs whenever the key is switched on--irrespective of system charge level. TIA *Braingears doesn't host this data for some reason. Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (216k) '84 300D (214k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
Re: [MBZ] 123 A/C info
so I fixed that, and it now engages. The system maintains a high/low pressure of 75 psi at rest, and 90 psi with the engine running--the same on both sides in each case. Help, I'm an idiot. Hey, ya idjit, close the manifold valves! Did you see the part of my story where the gauge-set hoses weren't coupling well? Now that's a red herring! -- Jim
Re: [MBZ] 123 A/C info
Ah ha, you are correct. I'll try again tomorrow evening with the valves in the closed position. On 7/2/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: Casey, It sounds like you have the valves open on your test gages, and the pressure is equalizing through the manifold. Make sure both valves on the manifold are tightly closed. They don't need to be open to read pressures. If the valves are closed. You should have a nice delta P across the compressor, assuming the compressor is turning, and not just the belt driven clutch pulley. If all the above is totally wrong, and the compressor is turning, it is probably bad. Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (216k) '84 300D (214k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
Re: [MBZ] 123 A/C info
In a message dated 7/2/2006 7:59:59 P.M. US Mountain Standard Time, [EMAIL PROTECTED] writes: I'm attempting to diagnose my wife's '84 300D A/C, and can't quite figure out where all the components reside. The steaky and braingears sites have apparently gone AWOL. I ran my RobinAir vacuum pump on the system for an hour, and it held for at least an hour afterwords, so I leaked some propane in there as a test. Turns out the clutch electrical connector was unhooked, so I fixed that, and it now engages. The system maintains a high/low pressure of 75 psi at rest, and 90 psi with the engine running--the same on both sides in each case. Help, I'm an idiot. Casey, It sounds like you have the valves open on your test gages, and the pressure is equalizing through the manifold. Make sure both valves on the manifold are tightly closed. They don't need to be open to read pressures. If the valves are closed. You should have a nice delta P across the compressor, assuming the compressor is turning, and not just the belt driven clutch pulley. If all the above is totally wrong, and the compressor is turning, it is probably bad. Regards, Jim Friesen Phoenix AZ 79 300SD, 262 K miles 98 ML 320, 142 K miles
[MBZ] 123 A/C info
I'm attempting to diagnose my wife's '84 300D A/C, and can't quite figure out where all the components reside. The steaky and braingears sites have apparently gone AWOL. I ran my RobinAir vacuum pump on the system for an hour, and it held for at least an hour afterwords, so I leaked some propane in there as a test. Turns out the clutch electrical connector was unhooked, so I fixed that, and it now engages. The system maintains a high/low pressure of 75 psi at rest, and 90 psi with the engine running--the same on both sides in each case. Help, I'm an idiot. -- Casey Olympia, WA Biodiesel: "I drive in a persistent vegetative state" '87 300TD intercooler #22 (216k) '84 300D (214k) Gashuffer: '89 Vanagon Wolfsburg Edition (187K) http://users.zhonka.net/zeitgeist/Misc/IMG_0171.JPG
