Re: [MBZ] mono-valve source
Precisely what happened with my 3 MTC mono-valves. All it takes is a pinhole. Jon On Apr 17, 2015, at 10:47 PM, Jaime Kopchinski jaime...@gmail.com wrote: Coolant gets past the sealing and into the moving parts of the valve. This causes the valve to get somewhat hydrolocked and not pulse open and closed properly, resulting it too much or too little heat. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
I appreciate the confidence in my talents. Now if y'all will kickstartgofundme to buy a CNC milling machine I will get right to it. I bought one of those replacement cartridges from Jabba for one of the SDs for my daughter to replace but I don't know if she did it yet or not -- I think I had replaced it a coupla years ago too. And yes it was cheepchineechit then and now too I guess. --R On 4/18/15 1:34 AM, G Mann wrote: I second that nomination ! .. hahaha.. Amazing how painless that was... for me.. On Fri, Apr 17, 2015 at 9:23 PM, Curly McLain 126die...@gmail.com wrote: With all the CNC machining capacity, it seems to me that someone, somewhere, should be able to remake the valve to take O rings with a new design and sell replacement parts that actually work. This problem is a matter of when will it happen, not if it will happen.. known design weak point. Surely, it would be worth writing a CNC machining program to make a better part from a block of something invincible. Sounds like a project for Rich! Should we volunteer him? ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
Why own a CNC ? Just build the program for the part and rent production time. There are loads of small [relatively] shops that have excess machinery capacity now because the economy is in the tank. Production demand is down, but the machine sets there costing space and money.. I'm on several machinery auction lists, every day there is another shop doing a bankruptcy sale because they couldn't get enough orders to keep the machines busy. Rent time, make parts, sell them.. Unfortunately, for the rubber part, it would require a set of molds. Last time I had a mold set made, it ran a bit over $120,000, so recovery costs would require volume production and sales. Yet, there is likely a work around on that, I just haven't thought of it yet. On Sat, Apr 18, 2015 at 7:01 AM, Rich Thomas richthomas79td...@constructivity.net wrote: I appreciate the confidence in my talents. Now if y'all will kickstartgofundme to buy a CNC milling machine I will get right to it. I bought one of those replacement cartridges from Jabba for one of the SDs for my daughter to replace but I don't know if she did it yet or not -- I think I had replaced it a coupla years ago too. And yes it was cheepchineechit then and now too I guess. --R On 4/18/15 1:34 AM, G Mann wrote: I second that nomination ! .. hahaha.. Amazing how painless that was... for me.. On Fri, Apr 17, 2015 at 9:23 PM, Curly McLain 126die...@gmail.com wrote: With all the CNC machining capacity, it seems to me that someone, somewhere, should be able to remake the valve to take O rings with a new design and sell replacement parts that actually work. This problem is a matter of when will it happen, not if it will happen.. known design weak point. Surely, it would be worth writing a CNC machining program to make a better part from a block of something invincible. Sounds like a project for Rich! Should we volunteer him? ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
I have seen some instructable-type things on making molds for rubber or silicone bits, I would think with a CNC machine that it would not be too hard to do it, and to bodge up some injection equipment. --R On 4/18/15 12:24 PM, G Mann wrote: Why own a CNC ? Just build the program for the part and rent production time. There are loads of small [relatively] shops that have excess machinery capacity now because the economy is in the tank. Production demand is down, but the machine sets there costing space and money.. I'm on several machinery auction lists, every day there is another shop doing a bankruptcy sale because they couldn't get enough orders to keep the machines busy. Rent time, make parts, sell them.. Unfortunately, for the rubber part, it would require a set of molds. Last time I had a mold set made, it ran a bit over $120,000, so recovery costs would require volume production and sales. Yet, there is likely a work around on that, I just haven't thought of it yet. On Sat, Apr 18, 2015 at 7:01 AM, Rich Thomas richthomas79td...@constructivity.net wrote: I appreciate the confidence in my talents. Now if y'all will kickstartgofundme to buy a CNC milling machine I will get right to it. I bought one of those replacement cartridges from Jabba for one of the SDs for my daughter to replace but I don't know if she did it yet or not -- I think I had replaced it a coupla years ago too. And yes it was cheepchineechit then and now too I guess. --R On 4/18/15 1:34 AM, G Mann wrote: I second that nomination ! .. hahaha.. Amazing how painless that was... for me.. On Fri, Apr 17, 2015 at 9:23 PM, Curly McLain 126die...@gmail.com wrote: With all the CNC machining capacity, it seems to me that someone, somewhere, should be able to remake the valve to take O rings with a new design and sell replacement parts that actually work. This problem is a matter of when will it happen, not if it will happen.. known design weak point. Surely, it would be worth writing a CNC machining program to make a better part from a block of something invincible. Sounds like a project for Rich! Should we volunteer him? ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
I went through 3 chinese junk monovalves when I first got my 300D. Rusty finally sent me a real MB part, and it’s worked perfectly for the past 3 years. I also went through 2 chinese (junk) aux pumps at the same time. The motor tends to separate from the pump spraying coolant all over your engine compartment. Buy original MB parts. Jon On Apr 16, 2015, at 8:45 PM, G. M. Brown g_010...@hotmail.com wrote: I purchased a couple mono-valves from the PartsGeek for my '84 300D '85 300TD a few weeks back and found them to be Chinese junk, as the one where I opened the package had a different diameter to the cylindrical shaft such that it was a very difficult fit and didn't work at all so I sent 'em back and received a refund. Now that I've found only one of my mono-valves is bad, I would like to find a reputable source for the correct (i.e., good) mono-valves. Suggestions? See ya', stay healthy all. G. M. Brown Brevard, NC ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
had a different diameter to the cylindrical shaft such that it was a very difficult fit and didn't work at all The MTC I ended up with didn't fit either. I removed the circlip from the ends of both and transferred the rubber/screen part from the MTC to the bad one that came out of the car. It then fit, and so far seems to be working. The MTC _looked_ identical to what came out of the car, but obviously the QC on the dimensioning was not so good. -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
Forgot to mention: Tom Hanson (thomas.han...@mbusa.com mailto:thomas.han...@mbusa.com) at the MB Classic Center is a great resource. If you are a member of the MBCA, you get a discount. His number is: (949) 598-4842 On Apr 16, 2015, at 8:45 PM, G. M. Brown g_010...@hotmail.com wrote: I purchased a couple mono-valves from the PartsGeek for my '84 300D '85 300TD a few weeks back and found them to be Chinese junk, as the one where I opened the package had a different diameter to the cylindrical shaft such that it was a very difficult fit and didn't work at all so I sent 'em back and received a refund. Now that I've found only one of my mono-valves is bad, I would like to find a reputable source for the correct (i.e., good) mono-valves. Suggestions? See ya', stay healthy all. G. M. Brown Brevard, NC ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
Yep, MB parts only in this case. Bosch stopped making them so a new supplier stepped in, with a higher price. The Chinese ones are junk, as you discovered. Jaime On Thursday, April 16, 2015, G. M. Brown g_010...@hotmail.com wrote: I purchased a couple mono-valves from the PartsGeek for my '84 300D '85 300TD a few weeks back and found them to be Chinese junk, as the one where I opened the package had a different diameter to the cylindrical shaft such that it was a very difficult fit and didn't work at all so I sent 'em back and received a refund. Now that I've found only one of my mono-valves is bad, I would like to find a reputable source for the correct (i.e., good) mono-valves. Suggestions? See ya', stay healthy all. G. M. Brown Brevard, NC ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Jaime Kopchinski http://www.jaimekop.com/ ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
With all the CNC machining capacity, it seems to me that someone, somewhere, should be able to remake the valve to take O rings with a new design and sell replacement parts that actually work. This problem is a matter of when will it happen, not if it will happen.. known design weak point. Surely, it would be worth writing a CNC machining program to make a better part from a block of something invincible. Sounds like a project for Rich! Should we volunteer him? ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
I second that nomination ! .. hahaha.. Amazing how painless that was... for me.. On Fri, Apr 17, 2015 at 9:23 PM, Curly McLain 126die...@gmail.com wrote: With all the CNC machining capacity, it seems to me that someone, somewhere, should be able to remake the valve to take O rings with a new design and sell replacement parts that actually work. This problem is a matter of when will it happen, not if it will happen.. known design weak point. Surely, it would be worth writing a CNC machining program to make a better part from a block of something invincible. Sounds like a project for Rich! Should we volunteer him? ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
I think the issue with the MTC (Chinese) parts are the rubber quality. Coolant gets past the sealing and into the moving parts of the valve. This causes the valve to get somewhat hydrolocked and not pulse open and closed properly, resulting it too much or too little heat. The failure of an original part was a tear in the rubber at its thinnest section, resulting in the same. Jaime On Friday, April 17, 2015, Jim Cathey jim.cathey...@gmail.com wrote: had a different diameter to the cylindrical shaft such that it was a very difficult fit and didn't work at all The MTC I ended up with didn't fit either. I removed the circlip from the ends of both and transferred the rubber/screen part from the MTC to the bad one that came out of the car. It then fit, and so far seems to be working. The MTC _looked_ identical to what came out of the car, but obviously the QC on the dimensioning was not so good. -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Jaime Kopchinski http://www.jaimekop.com/ ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
Jaime wrote: I think the issue with the MTC (Chinese) parts are the rubber quality. Unfortunately, that statement is applicable to ALL rubber parts made in China, not just mono-valve inserts. Parts (and tools) manufactured in Taiwan are of a much higher quality than those coming from mainland China. Rick ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
With all the CNC machining capacity, it seems to me that someone, somewhere, should be able to remake the valve to take O rings with a new design and sell replacement parts that actually work. This problem is a matter of when will it happen, not if it will happen.. known design weak point. Surely, it would be worth writing a CNC machining program to make a better part from a block of something invincible. On Fri, Apr 17, 2015 at 7:47 PM, Jaime Kopchinski jaime...@gmail.com wrote: I think the issue with the MTC (Chinese) parts are the rubber quality. Coolant gets past the sealing and into the moving parts of the valve. This causes the valve to get somewhat hydrolocked and not pulse open and closed properly, resulting it too much or too little heat. The failure of an original part was a tear in the rubber at its thinnest section, resulting in the same. Jaime On Friday, April 17, 2015, Jim Cathey jim.cathey...@gmail.com wrote: had a different diameter to the cylindrical shaft such that it was a very difficult fit and didn't work at all The MTC I ended up with didn't fit either. I removed the circlip from the ends of both and transferred the rubber/screen part from the MTC to the bad one that came out of the car. It then fit, and so far seems to be working. The MTC _looked_ identical to what came out of the car, but obviously the QC on the dimensioning was not so good. -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- Jaime Kopchinski http://www.jaimekop.com/ ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] mono-valve source
I purchased a couple mono-valves from the PartsGeek for my '84 300D '85 300TD a few weeks back and found them to be Chinese junk, as the one where I opened the package had a different diameter to the cylindrical shaft such that it was a very difficult fit and didn't work at all so I sent 'em back and received a refund. Now that I've found only one of my mono-valves is bad, I would like to find a reputable source for the correct (i.e., good) mono-valves. Suggestions? See ya', stay healthy all. G. M. Brown Brevard, NC MB stealers who advertise in the star, or the classic center. OE only for that part. Or buy a 240D with REAL heater controls! ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve pigtail
y'know, i could use that money! esh is super rich. he's got a place in brooksville. he won't miss it! On Fri, Sep 13, 2013 at 10:02 PM, Frederick Moir fredy4.s...@yahoo.comwrote: Mike. Enjoy. Gary. It was gratis/pro bono, just not that kind of bono. You sexy beast! Fred Moir Lynn MA Diesel preferred. From: Mike Esh michael...@mac.com To: Okie Benz mercedes@okiebenz.com Sent: Friday, September 13, 2013 9:32 PM Subject: [MBZ] Mono valve pigtail Thanks Fred! Pigtail arrived today and is exactly what I need. Please let me how much money to send you and how you would like me to send it. Thank you very much. Michael E. Esh 231-286-2344 ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- *reliable vendor of superior parts for mercedes and other european cars * *www.BuyEUROparts.com* ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve pigtail
oddly, he wishes for you to send ME $1250USD. i don't get it myself but that is what he wants On Fri, Sep 13, 2013 at 9:32 PM, Mike Esh michael...@mac.com wrote: Thanks Fred! Pigtail arrived today and is exactly what I need. Please let me how much money to send you and how you would like me to send it. Thank you very much. Michael E. Esh 231-286-2344 ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com -- *reliable vendor of superior parts for mercedes and other european cars * *www.BuyEUROparts.com* ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve pigtail
Mike. Enjoy. Gary. It was gratis/pro bono, just not that kind of bono. You sexy beast! Fred Moir Lynn MA Diesel preferred. From: Mike Esh michael...@mac.com To: Okie Benz mercedes@okiebenz.com Sent: Friday, September 13, 2013 9:32 PM Subject: [MBZ] Mono valve pigtail Thanks Fred! Pigtail arrived today and is exactly what I need. Please let me how much money to send you and how you would like me to send it. Thank you very much. Michael E. Esh 231-286-2344 ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Jim Cathey wrote: No voltage == heat, +12V == no heat. PWM (in the seconds timeframe) for in between. Do you mean that duty cycle is measured with s stopwatch, not with a dwell meter? Mitch. ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
I believe a dwell meter would give you an average of the duty cycle, so you would see as it increased or decreased. Essentially, the signal is a square wave with the time being varied to control the flow of coolant through the valve. Dan Sent from my iPhone On Dec 1, 2011, at 6:50 AM, Mitch Haley m...@voyager.net wrote: Jim Cathey wrote: No voltage == heat, +12V == no heat. PWM (in the seconds timeframe) for in between. Do you mean that duty cycle is measured with s stopwatch, not with a dwell meter? Mitch. ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Do you mean that duty cycle is measured with s stopwatch, not with a dwell meter? Neither, I think. It's right at that in-between stage where a regular meter can't really keep up, yet is too slow for the typical (?) dwell meter. I found that a 12V test lamp worked perfectly. Just watch it blink on and off. The fast-reacting analog gauge on a Fluke DMM tracked it OK, but wasn't nearly as easy to keep track of as the lamp. -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
On Dec 1, 2011 6:51 AM, Jim Cathey j...@windwireless.net wrote: slow for the typical (?) dwell meter. I found that a 12V test lamp worked perfectly. Just watch it blink on and off. But a 'scope is so much more fun! Alex ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Jim, I hooked a taillight bulb to the leads going to the mono valve and still get the same readings I did with the multimeter. I did not get blinking lights at any settings, solid on, solid off. I hooked up five different control boxes and got the same results. I am at a loss. Mike Michael E. Esh On Dec 1, 2011, at 12:23 AM, Jim Cathey j...@windwireless.net wrote: ...Zero volts when defrost button is pushed. No voltage == heat, +12V == no heat. PWM (in the seconds timeframe) for in between. If it's never getting juice, the valve is not your problem and you need to look at, say, resoldering the control panel. (Oh, and fuses, temperature feedback plumbing, etc.) -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
I tried five different control units. I cleaned each one with contact cleaner. Could they all be bad? Michael E. Esh On Nov 30, 2011, at 12:36 PM, Rich Thomas richthomas79td...@constructivity.net wrote: Sounds like the control unit is not controlling. Might want to take it out and see if anything on it (like maybe the wheel contacts) is corroded, broken, fried, worn out, whatever. --R On 11/30/11 12:24 PM, Mike Esh wrote: I am still having trouble regulating heat in my 84 300D. I either get all heat or all cold. Cold only coming on when temp wheel is rotated all the way to max cool. Current readings are at Mono valve are as follows: 12 volts when system is off. System on any of the 3 center buttons pushed: 12 volts when temp wheel is set to full cool or full heat. zero volts when temp dial is moved to any other position. Zero volts when defrost button is pushed. Is this correct? Any suggestions? I have replaced mono valve already. Thanks, Mike Michael E. Esh ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Are any of the control boxes (you mean the push button array here right?) known to be good? Like you can put them in another car and they for sure work? The problem is you're suffering just about the most common failure. If all the boxes you're messing with are 20+ years old its quite possible for them all to be broken the same... -Curt Date: Thu, 01 Dec 2011 17:50:14 -0500 From: Mike Esh michael...@me.com To: Mercedes Discussion List mercedes@okiebenz.com Subject: Re: [MBZ] Mono valve voltage readings -please help Message-ID: 93499b2d-4baa-47bf-8e14-97aece39f...@me.com Content-Type: text/plain; CHARSET=US-ASCII Jim, I hooked a taillight bulb to the leads going to the mono valve and still get the same readings I did with the multimeter. I did not get blinking lights at any settings, solid on, solid off. I hooked up five different control boxes and got the same results. I am at a loss. Mike Michael E. Esh On Dec 1, 2011, at 12:23 AM, Jim Cathey j...@windwireless.net wrote: ...Zero volts when defrost button is pushed. No voltage == heat, +12V == no heat. PWM (in the seconds timeframe) for in between. If it's never getting juice, the valve is not your problem and you need to look at, say, resoldering the control panel. (Oh, and fuses, temperature feedback plumbing, etc.) -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
I tried five different control units. I cleaned each one with contact cleaner. Could they all be bad? Absolutely. The units with the little translucent AUTO switch are EXTREMELY prone to having cracked solder joints. As in: I've had to fix EVERY one of them in our fleet. Yes, every one. Fortunately the repair is fairly easy, if you can solder. -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
I hooked a taillight bulb to the leads going to the mono valve and still get the same readings I did with the multimeter. I did not get blinking lights at Taillight bulb is a bit heavy, a side-marker lamp would be kinder and gentler. any settings, solid on, solid off. I hooked up five different control boxes and got the same results. On our 380SL the auxiliary coolant pump is a bit noisy and you can hear a faint 'whirr' inside the cabin. As the monovalve cycles on and off you can hear the pitch of the whirr change. Whee-whirr-whee-whi... -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Here is good conversation about mono valve voltage. It cleared things up me about reading voltage to the mono valve. Mine appears to be working correctly. Michael E. Esh On Dec 1, 2011, at 9:11 PM, Jim Cathey j...@windwireless.net wrote: I hooked a taillight bulb to the leads going to the mono valve and still get the same readings I did with the multimeter. I did not get blinking lights at Taillight bulb is a bit heavy, a side-marker lamp would be kinder and gentler. any settings, solid on, solid off. I hooked up five different control boxes and got the same results. On our 380SL the auxiliary coolant pump is a bit noisy and you can hear a faint 'whirr' inside the cabin. As the monovalve cycles on and off you can hear the pitch of the whirr change. Whee-whirr-whee-whi... -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
None of the pbu's are known to be good. I am going to check mono valve function one more time and then order new pbu if I find nothing new. Does Rusty carry these? Michael E. Esh On Dec 1, 2011, at 7:56 PM, Curt Raymond curtlud...@yahoo.com wrote: Are any of the control boxes (you mean the push button array here right?) known to be good? Like you can put them in another car and they for sure work? The problem is you're suffering just about the most common failure. If all the boxes you're messing with are 20+ years old its quite possible for them all to be broken the same... -Curt Date: Thu, 01 Dec 2011 17:50:14 -0500 From: Mike Esh michael...@me.com To: Mercedes Discussion List mercedes@okiebenz.com Subject: Re: [MBZ] Mono valve voltage readings -please help Message-ID: 93499b2d-4baa-47bf-8e14-97aece39f...@me.com Content-Type: text/plain; CHARSET=US-ASCII Jim, I hooked a taillight bulb to the leads going to the mono valve and still get the same readings I did with the multimeter. I did not get blinking lights at any settings, solid on, solid off. I hooked up five different control boxes and got the same results. I am at a loss. Mike Michael E. Esh On Dec 1, 2011, at 12:23 AM, Jim Cathey j...@windwireless.net wrote: ...Zero volts when defrost button is pushed. No voltage == heat, +12V == no heat. PWM (in the seconds timeframe) for in between. If it's never getting juice, the valve is not your problem and you need to look at, say, resoldering the control panel. (Oh, and fuses, temperature feedback plumbing, etc.) -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Does anyone have a picture example of a broken circuit? Am I just looking for crack in a solder joint? Michael E. Esh On Dec 1, 2011, at 9:09 PM, Jim Cathey j...@windwireless.net wrote: I tried five different control units. I cleaned each one with contact cleaner. Could they all be bad? Absolutely. The units with the little translucent AUTO switch are EXTREMELY prone to having cracked solder joints. As in: I've had to fix EVERY one of them in our fleet. Yes, every one. Fortunately the repair is fairly easy, if you can solder. -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
On Dec 1, 2011, at 8:53 PM, Mike Esh michael...@me.com wrote: Does anyone have a picture example of a broken circuit? Am I just looking for crack in a solder joint? Here is a pictorial on disassembly from Dan. I don't think it shows specifically cracks, but it was pretty thorough, IIRC. (can't view it on the iPhone for some reason). http://gallery.me.com/dpenoff#100140 BTW, do you want to part with one of the non-functioning units? I could use a spare. Rick Sent from my iPhone ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
order new pbu if I find nothing new. Does Rusty carry these? You got a big wallet? There's a reason that we all either resolder them, or learn to do so. Hey, you've got five to learn on... -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Does anyone have a picture example of a broken circuit? Am I just looking for crack in a solder joint? Open one up, and examine (in particular) the joints to the side boards, which are (in contravention to all known good soldering practice) also the mechanical support of the side boards. The cracks there are usually extremely obvious. However, often those are not the only cracked joints. Just the most obvious ones. -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Yes, send me our address. Michael E. Esh On Dec 1, 2011, at 10:05 PM, Rick Knoble rickkno...@hotmail.com wrote: On Dec 1, 2011, at 8:53 PM, Mike Esh michael...@me.com wrote: Does anyone have a picture example of a broken circuit? Am I just looking for crack in a solder joint? Here is a pictorial on disassembly from Dan. I don't think it shows specifically cracks, but it was pretty thorough, IIRC. (can't view it on the iPhone for some reason). http://gallery.me.com/dpenoff#100140 BTW, do you want to part with one of the non-functioning units? I could use a spare. Rick Sent from my iPhone ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Sounds like the control unit is not controlling. Might want to take it out and see if anything on it (like maybe the wheel contacts) is corroded, broken, fried, worn out, whatever. --R On 11/30/11 12:24 PM, Mike Esh wrote: I am still having trouble regulating heat in my 84 300D. I either get all heat or all cold. Cold only coming on when temp wheel is rotated all the way to max cool. Current readings are at Mono valve are as follows: 12 volts when system is off. System on any of the 3 center buttons pushed: 12 volts when temp wheel is set to full cool or full heat. zero volts when temp dial is moved to any other position. Zero volts when defrost button is pushed. Is this correct? Any suggestions? I have replaced mono valve already. Thanks, Mike Michael E. Esh ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
If you remove the temperature wheel (quite easy) you can inspect for breaks in the circuitry. Then swap it with a temperature reel from another ACC module. That worked for me. On Wed, Nov 30, 2011 at 12:36 PM, Rich Thomas richthomas79td...@constructivity.net wrote: Sounds like the control unit is not controlling. Might want to take it out and see if anything on it (like maybe the wheel contacts) is corroded, broken, fried, worn out, whatever. --R On 11/30/11 12:24 PM, Mike Esh wrote: I am still having trouble regulating heat in my 84 300D. I either get all heat or all cold. Cold only coming on when temp wheel is rotated all the way to max cool. Current readings are at Mono valve are as follows: 12 volts when system is off. System on any of the 3 center buttons pushed: 12 volts when temp wheel is set to full cool or full heat. zero volts when temp dial is moved to any other position. Zero volts when defrost button is pushed. Is this correct? Any suggestions? I have replaced mono valve already. Thanks, Mike Michael E. Esh __**_ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/**archive/http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.comhttp://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com __**_ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/**archive/http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/**mailman/listinfo/mercedes_**okiebenz.comhttp://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
Mike Esh wrote: Current readings are at Mono valve are as follows: 12 volts when system is off. The monovalve is not controlled with a steady voltage. 12V is switched on and off rapidly, called pulse width modulation. That is, the more heat requested, the longer the OFF pulse and the shorter the ON pulse. System on any of the 3 center buttons pushed: 12 volts when temp wheel is set to full cool or full heat. zero volts when temp dial is moved to any other position. A DC volt meter is not a very dependable way to measure the control signal. The measured voltage will depend on the specs. of the meter. An oscilloscope is best. I suppose a ignition dwell meter would work. Do you have one of those? Zero volts when defrost button is pushed. Defrost is the fail mode. So when there is no power to the monovalve, and no vacuum to the servos the system will be in full heat, defrost mode. So this point is correct. Is this correct? Any suggestions? Without an oscilloscope - or maybe a dwell meter - swapping out parts may be the best option. I saw an hardware kit that will turn an iPad into a oscilloscope... -- Philip ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve voltage readings -please help
...Zero volts when defrost button is pushed. No voltage == heat, +12V == no heat. PWM (in the seconds timeframe) for in between. If it's never getting juice, the valve is not your problem and you need to look at, say, resoldering the control panel. (Oh, and fuses, temperature feedback plumbing, etc.) -- Jim ___ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Mono valve repair...
Royce Engler [EMAIL PROTECTED] writes: Rusty has the mono valve insert...I just did mine. Is this insert also known as the Mono Valve Repair Kit ?? http://img.eautopartscatalog.com/live/R302315174BOS.JPG Allan -- 1983 300D 1966 230
Re: [MBZ] Mono valve repair...
Yep...the thing that sticks up above the body of the valve...looks like a steel top hat... is the top end of what you see in the picture. The rubber thingy on the other end is what seats the valve. the top hat part is what slides through the electromagnetic coil that is in the top part of the valve body. It's that coil that you have to be careful of when you remove the valve insert. Take the four screws out on the top, pull out the whole assembly, support the coil from the bottom and push out the insert from the top. A little PBBlaster on it will help it slide out. HTH... Royce Engler 1985 300TD Turbo 295K -Original Message- From: Allan Streib [mailto:[EMAIL PROTECTED] Sent: Tuesday, January 02, 2007 10:29 PM To: [EMAIL PROTECTED] Cc: Mercedes Discussion List Subject: Re: [MBZ] Mono valve repair... Royce Engler [EMAIL PROTECTED] writes: Rusty has the mono valve insert...I just did mine. Is this insert also known as the Mono Valve Repair Kit ?? http://img.eautopartscatalog.com/live/R302315174BOS.JPG Allan -- 1983 300D 1966 230
Re: [MBZ] Mono valve repair...
yep Allan Streib wrote: Royce Engler [EMAIL PROTECTED] writes: Rusty has the mono valve insert...I just did mine. Is this insert also known as the Mono Valve Repair Kit ?? http://img.eautopartscatalog.com/live/R302315174BOS.JPG Allan -- Kaleb C. Striplin/Claremore, OK (2x) 91 300D 2.5 Turbo, 90 420SEL, 89 560SEL, 87 300SDL, 85 380SE 5.0 Euro, 84 190D 2.2, 81 240D, 76 240D, 76 300D, 72 250C, 69 250 http://www.striplin.net
Re: [MBZ] Mono valve???
I bought the LEDs to wire in and see what's going on. They are still sitting on the table in the Radio Shack blister packs. I haven't dug into the wiring diagram yet to see which wire to connect them to. However, the ACC is now working just fine! We're preparing for a trip to Mexico next week, so I doubt that I'll get to it till we come back. I'll report progress as it occurs. Thanks to everyone for the help and suggestions. On 7/5/05, Richard Hattaway [EMAIL PROTECTED] wrote: Good luck to Don, maybe he will have a report for us on his activities this weekend with the LED's etc. Richard -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC
Re: [MBZ] Mono valve???
All computer controled auto accessories are equipped with a thought process. The ACC saw you comming out of the store, decided the jig was up, and will play nice for a while. Unfortunately, they can also read maps and calculate distance. So if you dont take the LED's with you, about the time you cross the 100 mile border, the ACC will begin to act up again. Be prepared.. Take the blister packs.. Richard K4PKV --- OK Don [EMAIL PROTECTED] wrote: I bought the LEDs to wire in and see what's going on. They are still sitting on the table in the Radio Shack blister packs. I haven't dug into the wiring diagram yet to see which wire to connect them to. However, the ACC is now working just fine! We're preparing for a trip to Mexico next week, so I doubt that I'll get to it till we come back. I'll report progress as it occurs. Thanks to everyone for the help and suggestions. On 7/5/05, Richard Hattaway [EMAIL PROTECTED] wrote: Good luck to Don, maybe he will have a report for us on his activities this weekend with the LED's etc. Richard -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
RE: [MBZ] Mono valve???
No doubt George found the copper that the Germans use was too soft to be used with anything but his special softer brushes, eh? For those missing the sarcasm, it is there in spades. I got a set of Russ's brushes in the special order, and have found them to be outstanding. So his source, Schink Graphite, must have the process down pretty well after learning it from an old world German with a thick accent. I think I am going to try http://www.carbonbrush.com/automotivebrush.htm the next time I need brushes and see what happens. Good luck to Don, maybe he will have a report for us on his activities this weekend with the LED's etc. Richard --- Barry Stark [EMAIL PROTECTED] wrote: Russ - According to George Murphy the issue was not just to get the brushes to fit, it was the hardness of the brush compound. George found that the brushes that the Germans used were of a much softer composition than the ones we make here. Evidently the local brushes being harder caused premature commutator wear. That's what makes his special. Barry __ Yahoo! Mail Mobile Take Yahoo! Mail with you! Check email on your mobile phone. http://mobile.yahoo.com/learn/mail
Re: [MBZ] Mono valve???
no, I have never bought anything from him, nor would I. Barry Stark wrote: Kaleb - Hmmm, it seems you have a rather impressive list of personna non gratis. :^)What was George's sin. I think you told us once before. Wasn't it something with a servo that didn't turn out quite right? Barry -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Kaleb C. Striplin Sent: Saturday, July 02, 2005 8:02 AM To: Mercedes mailing list Subject: Re: [MBZ] Mono valve??? you dont even want to get me started on what i think about george murphy. Russ Maki wrote: Barry Stark wrote: Russ - According to George Murphy the issue was not just to get the brushes to fit, it was the hardness of the brush compound. George found that the brushes that the Germans used were of a much softer composition than the ones we make here. Evidently the local brushes being harder caused premature commutator wear. That's what makes his special. Barry Sorry Barry, but I'm not buying it. As I recall, Murphy also believes W123 CC amp failures are caused by the wrong brake light bulbs. I don't buy that either. Obviously, you don't want to install brushes for a vacuum cleaner motor into a 12 volt DC motor. You want 12-volt automotive brushes. Like the ones that are installed in starters, alternators, power window motors and other applications by the millions, every day, around the world. The original brushes I replaced in a Bosch blower motor a year ago had worn a deep notch into the commutator. If the factory originals were so soft, I can't understand how they did all that damage. I suspect that the big difference between the brushes George sells and the ones everybody else sells is the price. At carbonbrush.com, they're $6-something a pair. From Murphy they're what...$20? I know guy's got to make a living -- mercedessource.com does a lot of the same kind of packaging (fuse upgrade kit) and sells at a premium. More power to 'em both. A lot of people buy from them -- I don't. Russ Maki Ixonia, Wis. ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts
Re: [MBZ] Mono valve???
Thanks to all - This morning the outside temp was around 70F. The fan started about as one would expect, within a half a block of the house. Cool air came first, then the center vents shut, and hot air came. This was followed by the center vents opening about the time i was going to turn everything off and open the windows to let the heat out. Nice cool air came out the center vents for a few minutes, the they closed, and hot air came out the other vents. Followed by cool from the center vents again. This cycle continued all the way to work - 35 minutes, 25 miles. This evening, the temp was 90+, and cool air blew the whole time. So when it should have been pulse width modulated, the mono valve seemed to be either on or off, ro - it was on the whole time, and the A/C was cycling. The center vents seemed to be working OK, in synch with the A/C, but the nice transparent, even cabin temp didn't happen. Amplifier? I'm going to install lots of voltage monitoring LEDs tomorrow in hopes of narrowing the possibilities. Some of you may recall that I had a batch of blower motor brushes made up last year. After I did so I stumbled across this web site: http://www.carbonbrush.com/automotivebrush.htm Judging by my invoice from Schink Graphite, brush No. 54H on the web page is the same width and thickness as the brushes I got from the brush factory. The pigtail appears to be mounted from the side of the brush rather than a recess at the end like the original, but since the brush housing in the Bosch/Behr motor has a slot in it, I'd think it ought to be workable. The carbonbrush.com brushes are about 1/6 inch shorter than the Schunk brushes. They're also priced about 75 cents cheaper. and apparently available in lots of less than two dozen, although I have NO experience doing business with this vendor. The company name, address and phone number is on their main web page, http://www.carbonbrush.com/ Russ Maki Ixonia, Wis. ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC
Re: [MBZ] Mono valve???
OK Don wrote: Thanks to all - This morning the outside temp was around 70F. The fan started about as one would expect, within a half a block of the house. Cool air came first, then the center vents shut, and hot air came. Temp sensor tube no longer connects the temp sensor to the cabin air? If that happens, your CC will attempt to control the temp inside the dash. Another idea would be an intermittent electrical failure.
RE: [MBZ] Mono valve???
Russ - According to George Murphy the issue was not just to get the brushes to fit, it was the hardness of the brush compound. George found that the brushes that the Germans used were of a much softer composition than the ones we make here. Evidently the local brushes being harder caused premature commutator wear. That's what makes his special. Barry -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Russ Maki Sent: Friday, July 01, 2005 8:55 AM To: Mercedes mailing list Subject: Re: [MBZ] Mono valve??? Richard Hattaway wrote: Then you have to make the decision about replacing the fan motor if found bad, or putting new brushes in it. Our friend George Murphy has the brushes, and I am SURE that if he has them there are multiple other sources as well.. (c: New motors are expensive. So you may want to talk to your local motor rebuilder if budget is an issue. Richard K4PKV Some of you may recall that I had a batch of blower motor brushes made up last year. After I did so I stumbled across this web site: http://www.carbonbrush.com/automotivebrush.htm Judging by my invoice from Schink Graphite, brush No. 54H on the web page is the same width and thickness as the brushes I got from the brush factory. The pigtail appears to be mounted from the side of the brush rather than a recess at the end like the original, but since the brush housing in the Bosch/Behr motor has a slot in it, I'd think it ought to be workable. The carbonbrush.com brushes are about 1/6 inch shorter than the Schunk brushes. They're also priced about 75 cents cheaper. and apparently available in lots of less than two dozen, although I have NO experience doing business with this vendor. The company name, address and phone number is on their main web page, http://www.carbonbrush.com/ Russ Maki Ixonia, Wis.
Re: [MBZ] Mono valve???
OK Don wrote: Thanks to all - This morning the outside temp was around 70F. The fan started about as one would expect, within a half a block of the house. Cool air came first, then the center vents shut, and hot air came. This was followed by the center vents opening about the time i was going to turn everything off and open the windows to let the heat out. Nice cool air came out the center vents for a few minutes, the they closed, and hot air came out the other vents. Followed by cool from the center vents again. This cycle continued all the way to work - 35 minutes, 25 miles. This evening, the temp was 90+, and cool air blew the whole time. So when it should have been pulse width modulated, the mono valve seemed to be either on or off, ro - it was on the whole time, and the A/C was cycling. The center vents seemed to be working OK, in synch with the A/C, but the nice transparent, even cabin temp didn't happen. Amplifier? I'm going to install lots of voltage monitoring LEDs tomorrow in hopes of narrowing the possibilities. The monovalve has NOTHING to do with flaps opening/closing. That is accomplished by the vacuum system which is controlled by electrical activation controlled by the pushbutton controller. If the vacuum supply were to be intermittant (as COULD happen with an intermitant leak) you could have what you describe. It could also be caused by an electrically intermittant pushbutton controller OR even if cabin air were not reliably drawn past the cabin temperature sensor. The system is complex and without doing an extensive diagnostic (as outlined in the climate control manual) it's rare that a failing saystem can be returned to reliable operation. READ the manual! It outlines how you can rather accurately diagnose the system! (but don't let the section lifted from the 124 manual confuse you). All the mono valve does (and ALL that will misbehaive when the monovalve fails) is control heat flow thru the heater core. Heated coolant flows when the monovalve is open (power off) and is bloed when the monovalve is closed (power on). If the insert fails uncontrolled heat or NO heat at higher engine speeds are common symptoms of failures. Bad motor brushes or a failing blower motor won't open or close vents either. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 181Kmi,'87 190D 2.5 199Kmi, '84 190D 2.2 227Kmi, '85 190D 2.0 159Kmi, '87 190D 2.5 turbo 234kmi Diesel Technical Advisor MBCA, member GWSection http://www.dhc.net/~pmhack/mercedes/mbooth1.htm
Re: [MBZ] Mono valve???
Barry Stark wrote: Russ - According to George Murphy the issue was not just to get the brushes to fit, it was the hardness of the brush compound. George found that the brushes that the Germans used were of a much softer composition than the ones we make here. Evidently the local brushes being harder caused premature commutator wear. That's what makes his special. Barry Sorry Barry, but I'm not buying it. As I recall, Murphy also believes W123 CC amp failures are caused by the wrong brake light bulbs. I don't buy that either. Obviously, you don't want to install brushes for a vacuum cleaner motor into a 12 volt DC motor. You want 12-volt automotive brushes. Like the ones that are installed in starters, alternators, power window motors and other applications by the millions, every day, around the world. The original brushes I replaced in a Bosch blower motor a year ago had worn a deep notch into the commutator. If the factory originals were so soft, I can't understand how they did all that damage. I suspect that the big difference between the brushes George sells and the ones everybody else sells is the price. At carbonbrush.com, they're $6-something a pair. From Murphy they're what...$20? I know guy's got to make a living -- mercedessource.com does a lot of the same kind of packaging (fuse upgrade kit) and sells at a premium. More power to 'em both. A lot of people buy from them -- I don't. Russ Maki Ixonia, Wis.
Re: [MBZ] Mono valve???
you dont even want to get me started on what i think about george murphy. Russ Maki wrote: Barry Stark wrote: Russ - According to George Murphy the issue was not just to get the brushes to fit, it was the hardness of the brush compound. George found that the brushes that the Germans used were of a much softer composition than the ones we make here. Evidently the local brushes being harder caused premature commutator wear. That's what makes his special. Barry Sorry Barry, but I'm not buying it. As I recall, Murphy also believes W123 CC amp failures are caused by the wrong brake light bulbs. I don't buy that either. Obviously, you don't want to install brushes for a vacuum cleaner motor into a 12 volt DC motor. You want 12-volt automotive brushes. Like the ones that are installed in starters, alternators, power window motors and other applications by the millions, every day, around the world. The original brushes I replaced in a Bosch blower motor a year ago had worn a deep notch into the commutator. If the factory originals were so soft, I can't understand how they did all that damage. I suspect that the big difference between the brushes George sells and the ones everybody else sells is the price. At carbonbrush.com, they're $6-something a pair. From Murphy they're what...$20? I know guy's got to make a living -- mercedessource.com does a lot of the same kind of packaging (fuse upgrade kit) and sells at a premium. More power to 'em both. A lot of people buy from them -- I don't. Russ Maki Ixonia, Wis. ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts
Re: [MBZ] Mono valve???
The defrost mode does not force the fan on (this one, now - it should though). If it's not ready to turn on, nothing I do has any effect. Once it starts, it runs just fine. I've not had the full heat experience since that one time (knocking on wood). Relays? Brushes? How do you get the fan motor (I know -RTFM). YES, but once the fan starts in defrost, you can switch to another mode and the fan will keep running (if it's the engine temp lockout that's preventing fan action). Marshall -- -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC
Re: [MBZ] Mono valve???
OK Don wrote: The defrost mode does not force the fan on (this one, now - it should though). If it's not ready to turn on, nothing I do has any effect. Once it starts, it runs just fine. I've not had the full heat experience since that one time (knocking on wood). Relays? Brushes? How do you get the fan motor (I know -RTFM). You MAY be experiencing the early stages of a cracked/cold solder joint on the pushbutton printer circuit board. They are the most common intermittant problem with the '80s climate control systems (it WILL get worse if that's the problem). You may also be in the first stages of motor brush or bearing failure (lots of refereneces to those in the archives). I believe the blower motor is under the dash in the 126 (I've NEVER worked on a 126 blower motor). I'll leave further details to someone that knows what they are talking about! Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 181Kmi,'87 190D 2.5 199Kmi, '84 190D 2.2 227Kmi, '85 190D 2.0 159Kmi, '87 190D 2.5 turbo 234kmi Diesel Technical Advisor MBCA, member GWSection http://www.dhc.net/~pmhack/mercedes/mbooth1.htm
Re: [MBZ] Mono valve???
Don, I think you said you had already resoldered the side connectors on the push button control board. However, I have already misinterpreted this thread once (c:.. I have removed the fan in a 126 and multiple 123's. I remember it being something along the line of 'pull off the knee bolster on the passenger side and then unbolt the three or four screws that hold in the motor flange'. The motor is attached to a flange around 10 inches in diameter or so, and is hanging there in plain sight once you undo the bolster. I dont believe the 126 was any worse than the 123's that I have done (really simple, unbolt, unplug power and remove), but I've slept since then. Then you have to make the decision about replacing the fan motor if found bad, or putting new brushes in it. Our friend George Murphy has the brushes, and I am SURE that if he has them there are multiple other sources as well.. (c: New motors are expensive. So you may want to talk to your local motor rebuilder if budget is an issue. Richard K4PKV --- OK Don [EMAIL PROTECTED] wrote: The defrost mode does not force the fan on (this one, now - it should though). If it's not ready to turn on, nothing I do has any effect. Once it starts, it runs just fine. I've not had the full heat experience since that one time (knocking on wood). Relays? Brushes? How do you get the fan motor (I know -RTFM). YES, but once the fan starts in defrost, you can switch to another mode and the fan will keep running (if it's the engine temp lockout that's preventing fan action). Marshall -- -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com
Re: [MBZ] Mono valve???
Richard Hattaway wrote: Then you have to make the decision about replacing the fan motor if found bad, or putting new brushes in it. Our friend George Murphy has the brushes, and I am SURE that if he has them there are multiple other sources as well.. (c: New motors are expensive. So you may want to talk to your local motor rebuilder if budget is an issue. Richard K4PKV Some of you may recall that I had a batch of blower motor brushes made up last year. After I did so I stumbled across this web site: http://www.carbonbrush.com/automotivebrush.htm Judging by my invoice from Schink Graphite, brush No. 54H on the web page is the same width and thickness as the brushes I got from the brush factory. The pigtail appears to be mounted from the side of the brush rather than a recess at the end like the original, but since the brush housing in the Bosch/Behr motor has a slot in it, I'd think it ought to be workable. The carbonbrush.com brushes are about 1/6 inch shorter than the Schunk brushes. They're also priced about 75 cents cheaper. and apparently available in lots of less than two dozen, although I have NO experience doing business with this vendor. The company name, address and phone number is on their main web page, http://www.carbonbrush.com/ Russ Maki Ixonia, Wis.
Re: [MBZ] Mono valve???
OK Don wrote: The ACC fired right up this morning (80+) - and worked all the way to work. This evening, (98F), I could feel the compressor running, and feel cool air coming from the appropriate vents, at 70 MPH with the windows cracked, but the fan didn't come on for the first 10 miles or so. Then it suddenly turned on. I didn't loose cooling at all. So - I have sporatic random failures of different parts of the system. I did re-solder all the joints in the push button unit last summer, but I'm not discounting failure in it. Is the pushbutton unit, the control unit, or something else the most likely suspect??? The monovalve has NOTHING to do with the fan. If the engine temp sensor or the pushbutton control circuitry that controls when the fan can run (after the engine warms up a little) is operating erratically, you COULD have the problem you describe. Try punching the defrost button and then go back to the setting you want ands see if that h=gets the fan to run. Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 181Kmi,'87 190D 2.5 199Kmi, '84 190D 2.2 227Kmi, '85 190D 2.0 159Kmi, '87 190D 2.5 turbo 234kmi Diesel Technical Advisor MBCA, member GWSection http://www.dhc.net/~pmhack/mercedes/mbooth1.htm
Re: [MBZ] Mono valve???
Don, Don't rush to the conclusion that there is a problem. The fan system is automatic, and will control the speed of the fan to meet the requirements in the cabin. You say you didn't loose cooling at all, so the sytem may well have been satisfied. The fan may have been coasting on low till the system told it to get busy. The ACC system has a lot of neat features. The fan wont come on during a cold morning till the coolant reaches a particular temperature, just to keep from blowing cold air in your face on an already raw day. Considerate, these cars As Marshall said, you can force the fan with the defrost mode. However, if the cabin is comfortable, your system is probably working great. If you are not at the bottom of the temp control wheel, you can spin it to the coldest setting and demand more from the system, often causing the fan to move to a higher speed in automatic. Richard K4PKV If God didn't want me to run high power, he wouldn't have made big tubes Don - W7FN --- OK Don [EMAIL PROTECTED] wrote: The ACC fired right up this morning (80+) - and worked all the way to work. This evening, (98F), I could feel the compressor running, and feel cool air coming from the appropriate vents, at 70 MPH with the windows cracked, but the fan didn't come on for the first 10 miles or so. Then it suddenly turned on. I didn't loose cooling at all. So - I have sporatic random failures of different parts of the system. I did re-solder all the joints in the push button unit last summer, but I'm not discounting failure in it. Is the pushbutton unit, the control unit, or something else the most likely suspect??? On 6/29/05, Richard Hattaway [EMAIL PROTECTED] wrote: From the quick and easy test desk: As additional information, if you really want to see how it works ( what ham doesn't ) then get an LED with resistor that will illuminate when 12 V is applied. Tie wrap it to the passenger windshield wiper and hook it across the monovalve coil. Leave enough slack for the wiper to operate, and pass the wire under the trailing edge of the hood to the Monovalve. You can observe the Pulse Width Modulation system used to control your cabin temperature. Kinda fun in the fall, winter and spring especially.. watching the system correct for the proper temperature. In the summer it pretty much just stays on all the time. Richard Salisbury NC K4PKV -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC __ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail
Re: [MBZ] Mono valve???
Richard Hattaway wrote: As Marshall said, you can force the fan with the defrost mode. Defrost also forces full heat, though, doesn't it?
Re: [MBZ] Mono valve???
I believe it does. But not positive. I think the high speed fan setting will force it as well, but again, not positive. My old 300TD does not have the benefit of that nice ACC system, so I can't test. Reading Don's last post, however, he sure has a fan issue of some kind. I misunderstood the situation in the cabin (c: Richard --- David Brodbeck [EMAIL PROTECTED] wrote: Richard Hattaway wrote: As Marshall said, you can force the fan with the defrost mode. Defrost also forces full heat, though, doesn't it? __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Re: [MBZ] Mono valve???
Yes it does. On 6/30/05, David Brodbeck [EMAIL PROTECTED] wrote: Richard Hattaway wrote: As Marshall said, you can force the fan with the defrost mode. Defrost also forces full heat, though, doesn't it? ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Hans Neureiter, Houston, TX '82 300SD, '95 E300D
Re: [MBZ] Mono valve???
Don The 2 times my monovavle went south, and both times were in summer, the heat was unbearable. The first time it was the insert, 2nd was the solenoid. So before you order the insert, check for continuity on the solenoid. amf Hank - Original Message - From: OK Don [EMAIL PROTECTED] To: Mercedes mailing list [EMAIL PROTECTED] Sent: Tuesday, June 28, 2005 9:24 PM Subject: [MBZ] Mono valve??? The A/C in my '87 300SDL has been wirking fine, even at 100F today. This eveining after the outside temp had dropped to 85F, the nice cool breeze from the climate control system suddenly turned very hot. I'm guessing that this is the primary symptom of a faulty mono valve??? The car was converted to R134a by the PO, so I've been concerned that the system might blow up with the black goo at any time, but then again, this is the second summer since I bought it. So, do I just order the mono valve repair kit, or do the trouble shooting routine? TIA, -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] Mono valve???
pull it out and see if the diaphram is torn OK Don wrote: The A/C in my '87 300SDL has been wirking fine, even at 100F today. This eveining after the outside temp had dropped to 85F, the nice cool breeze from the climate control system suddenly turned very hot. I'm guessing that this is the primary symptom of a faulty mono valve??? The car was converted to R134a by the PO, so I've been concerned that the system might blow up with the black goo at any time, but then again, this is the second summer since I bought it. So, do I just order the mono valve repair kit, or do the trouble shooting routine? TIA, -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts
Re: [MBZ] Mono valve???
From the quick and easy test desk: Block the water line feeding the monovalve. I use two strips of wood and a C clamp, pinching it closed. See if your cabin temp returns to the pleasant cool you expect. If so, your monovalve or control system is at fault. If not, you have to begin to look at your A/C system. Then take a look at the coil and coil connection on the monovalve. It will default in the hot mode without 12 volts on the coil, so if it is disconnected or terminals corroded, you end up hot inside the car. After you do these tests, you will have a much better idea of the issues. Neat thing is that they can all be done in 20 minutes, with most of that time spent looking for appropriate pieces of wood and a C clamp. ( Autozone has a clamp for this purpose, but I am a bottom feeder (c: ) As additional information, if you really want to see how it works ( what ham doesn't ) then get an LED with resistor that will illuminate when 12 V is applied. Tie wrap it to the passenger windshield wiper and hook it across the monovalve coil. Leave enough slack for the wiper to operate, and pass the wire under the trailing edge of the hood to the Monovalve. You can observe the Pulse Width Modulation system used to control your cabin temperature. Kinda fun in the fall, winter and spring especially.. watching the system correct for the proper temperature. In the summer it pretty much just stays on all the time. Richard Salisbury NC K4PKV From: OK Don [EMAIL PROTECTED] To: Mercedes mailing list [EMAIL PROTECTED] Sent: Tuesday, June 28, 2005 9:24 PM Subject: [MBZ] Mono valve??? The A/C in my '87 300SDL has been wirking fine, even at 100F today. This eveining after the outside temp had dropped to 85F, the nice cool breeze from the climate control system suddenly turned very hot. I'm guessing that this is the primary symptom of a faulty mono valve??? The car was converted to R134a by the PO, so I've been concerned that the system might blow up with the black goo at any time, but then again, this is the second summer since I bought it. So, do I just order the mono valve repair kit, or do the trouble shooting routine? TIA, -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Re: [MBZ] Mono valve???
Idling or going at hiway speed? Hank - Original Message - From: Kaleb C. Striplin [EMAIL PROTECTED] To: Mercedes mailing list [EMAIL PROTECTED] Sent: Tuesday, June 28, 2005 11:16 PM Subject: Re: [MBZ] Mono valve??? You know, my SDL will blow 42-45 vent temp on 90+ degree days with 134, Im amazed. Loren Faeth wrote: try turning the temp all the way cold while driving down the highway. R134 ain't worth crap unless you are moving at highway speeds. Mine will occasionally lose its mind and blow hot, but if I turn the dial to more blue, it will blow cold again. If it blows hot with the dial turned all the way down, and blows hot with the Economy push button down, then i'd guess you need a monvalve kit. At 09:24 PM 6/28/2005, you wrote: The A/C in my '87 300SDL has been wirking fine, even at 100F today. This eveining after the outside temp had dropped to 85F, the nice cool breeze from the climate control system suddenly turned very hot. I'm guessing that this is the primary symptom of a faulty mono valve??? The car was converted to R134a by the PO, so I've been concerned that the system might blow up with the black goo at any time, but then again, this is the second summer since I bought it. So, do I just order the mono valve repair kit, or do the trouble shooting routine? TIA, -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] Mono valve???
you talking about the push button unit or the control unit behind the glove box? David Johnson wrote: --- OK Don [EMAIL PROTECTED] wrote: The A/C in my '87 300SDL has been wirking fine, even at 100F today. This eveining after the outside temp had dropped to 85F, the nice cool breeze from the climate control system suddenly turned very hot. I've had the same problem twice within 4-5 months . The culprit was the monovalve the first time, and the ACC control unit the second time. David 83 300DT Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts
Re: [MBZ] Mono valve???
highway speed, idling it will raise to about 50 to 55, but still is plenty cool. Henry Kolesnik wrote: Idling or going at hiway speed? Hank - Original Message - From: Kaleb C. Striplin [EMAIL PROTECTED] To: Mercedes mailing list [EMAIL PROTECTED] Sent: Tuesday, June 28, 2005 11:16 PM Subject: Re: [MBZ] Mono valve??? You know, my SDL will blow 42-45 vent temp on 90+ degree days with 134, Im amazed. Loren Faeth wrote: try turning the temp all the way cold while driving down the highway. R134 ain't worth crap unless you are moving at highway speeds. Mine will occasionally lose its mind and blow hot, but if I turn the dial to more blue, it will blow cold again. If it blows hot with the dial turned all the way down, and blows hot with the Economy push button down, then i'd guess you need a monvalve kit. At 09:24 PM 6/28/2005, you wrote: The A/C in my '87 300SDL has been wirking fine, even at 100F today. This eveining after the outside temp had dropped to 85F, the nice cool breeze from the climate control system suddenly turned very hot. I'm guessing that this is the primary symptom of a faulty mono valve??? The car was converted to R134a by the PO, so I've been concerned that the system might blow up with the black goo at any time, but then again, this is the second summer since I bought it. So, do I just order the mono valve repair kit, or do the trouble shooting routine? TIA, -- OK Don, KD5NRO Norman, OK '87 300SDL '81 240D '78 450SLC ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net ___ For used parts email [EMAIL PROTECTED] For new parts see www.buymbparts.com For repairs see www.oldworldauto.com To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 87 300SDL, 85 380SE, 85 300D, 81 300TD, 81 240D, 81 240D, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts
