Re: [MBZ] Monovalve Static test out of the car?

Mercedes on behalf of Max Dillon >via Mercedes >Sent: 29 November 2017 17:17 >To: Mercedes Discussion List >Cc: Max Dillon >Subject: Re: [MBZ] Monovalve Static test out of the car? > >Inlet and outlet hose connection diameter? > >How long is the monovalve? How wide? How t

Re: [MBZ] Monovalve Static test out of the car?

_ From: Mercedes on behalf of Max Dillon via Mercedes Sent: 29 November 2017 17:17 To: Mercedes Discussion List Cc: Max Dillon Subject: Re: [MBZ] Monovalve Static test out of the car? Inlet and outlet hose connection diameter? How long is the monovalve? How wide? How tall? -- Max Dillon Charleston S

Re: [MBZ] Monovalve Static test out of the car?

;What do you need to know? > >Fred. > > >Fred Moir. >Lynn MA. >Diesel preferred. > > > >From: Mercedes on behalf of Meade >Dillon via Mercedes >Sent: 29 November 2017 07:16 >To: Jim Cathey >Cc: Meade Dillon; Mercedes Discussi

Re: [MBZ] Monovalve Static test out of the car?

Discussion List Subject: Re: [MBZ] Monovalve Static test out of the car? I wonder how hard it would be to back-fit a 124 car with a re-build-able monovalve from a 123 or 126. Anyone have two "on the shelf" to make a quick comparison of things like inlet / outlet hose diameter? I'll bet that

Re: [MBZ] Monovalve Static test out of the car?

I wonder how hard it would be to back-fit a 124 car with a re-build-able monovalve from a 123 or 126. Anyone have two "on the shelf" to make a quick comparison of things like inlet / outlet hose diameter? I'll bet that the electrical characteristics are close enough to not make a difference, but

Re: [MBZ] Monovalve Static test out of the car?

BTDT. It can look good but function imperfectly. Get an OEM monovalve insert from a dealer. Dan knows a cheap source. On Tue, Nov 28, 2017 at 9:30 PM, Jim Cathey via Mercedes < mercedes@okiebenz.com> wrote: > Every one I've seen that failed had torn rubber that was obvious at > inspection. Re

Re: [MBZ] Monovalve Static test out of the car?

Every one I've seen that failed had torn rubber that was obvious at inspection. Remove insert, and look for tears! (These are the 107/123/126 units.) -- Jim ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe o

Re: [MBZ] Monovalve Static test out of the car?

Can you disassemble and inspect the rubber? (I don't think anyone sells replacement rubber diaphragm for 124 monovalve) -- Max Dillon Charleston SC '87 300TD '95 E300 ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Uns

[MBZ] Monovalve Static test out of the car?

Is there any easy way to test a monovalve out of the car to check the diaphragm? 12V on and off will prove the magnet and slide (thunk, or no thunk) But is there a way so see if the valve Functions? Since the fail mode is heat only at highway speeds, then if you can't blow through it in eith

Re: [MBZ] Monovalve

Curley wrote: 124 300D (87) All I know is the 123, so keep that in mind. Driver complains heat is sometimes working and sometimes not. I have avoided this diagnosis before by paying someone to do it. That guy is NLA (Kicked the bucket) I unplugged the monovalve, and it appears it is deli

Re: [MBZ] Monovalve

I don't think the 123 PBUs are the same. Andrew Strasfogel via Mercedes December 24, 2016 at 10:52 AM Do what I do. Buy used w123 push button modules whenever they come up on eBay and keep a stack of them in the garage. When the heat starts to act up, swap in a pus

Re: [MBZ] Monovalve

I absolutely HATE the 201 climate control system, I have had more trouble with that stupid vacuum actuated heater valve. Get full heat. Could never find a vacuum leak anywhere but for some reason it never shut. Sent from my iPhone > On Dec 24, 2016, at 11:40 AM, Curt Raymond via Mercedes > w

Re: [MBZ] Monovalve

Sometimes they can be taken apart and cleaned. The symptoms Curley describes sounds more like something else but could be monovalve. Sent from my iPhone > On Dec 24, 2016, at 11:01 AM, Peter Frederick via Mercedes > wrote: > > All W124's have the same valve setup, but the later ones have dual

Re: [MBZ] Monovalve

201 uses a vacuum actuated valve, quite a simple thing. I think I've got one here somewhere if anybody needs one... Curt Sent from Yahoo Mail on Android On Sat, Dec 24, 2016 at 12:02 PM, Jim Cathey via Mercedes wrote: The 201 got a new system, and I think the 124 inherited it. -- Jim __

Re: [MBZ] Monovalve

The 201 got a new system, and I think the 124 inherited it. -- 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

Re: [MBZ] Monovalve

All W124's have the same valve setup, but the later ones have dual controls and have two valves instead of one. None of them can be repaired to the best of my knowledge. I've replaced two. Peter ___ http://www.okiebenz.com To search list archives http:/

Re: [MBZ] Monovalve

Do what I do. Buy used w123 push button modules whenever they come up on eBay and keep a stack of them in the garage. When the heat starts to act up, swap in a push button module. I found that the mono valve once replaced will last quite a long time. On Dec 24, 2016 11:30 AM, "Jaime Kopchinski via

Re: [MBZ] Monovalve

Ah, can't say I've had one of those... I thought early 124s had the same setup as 123s and 126s? Only 124 I had was a 95 E320... never had any climate control problems with that in all the years I owned it. Jaime On Sat, Dec 24, 2016 at 9:25 AM, Kaleb C. Striplin via Mercedes < mercedes@okieben

Re: [MBZ] Monovalve

Now keep in mind Curley is taking about a 124, which does not have the same sort of valve as the 123. There is no insert that tears that you can replace on them, you replace the whole valve if it's bad. Sent from my iPhone > On Dec 24, 2016, at 5:49 AM, MG via Mercedes wrote: > > I agree wit

Re: [MBZ] Monovalve

I agree with Jaime that it's likely the valve insert but differ in that you do need to drain some coolant. Enough to get the level down below the valve. If you don't then you will start the life of the new seal with water on top where the magnet part is and have it working from the first just a

Re: [MBZ] Monovalve

Get an insert and bring it to the Q. We can do it there. Manfred Date: Fri, 23 Dec 2016 20:23:02 -0600 From: Curley McLain <126die...@gmail.com> Well its not in awa. It was 65 or so here today. It has been down near freezing at night. I don't need to fix it this week, but I need to get i

Re: [MBZ] Monovalve

But if the foam tube disintegrates, the heat goes flakey too. And if the pbu is going bad, the heat goes flakey too. So far, we have not ruled out anything; nor proven anything is good. So for the monovalve, unplugged is supposed to give full heat; 12v across the pins is supposed to turn off

Re: [MBZ] Monovalve

Well its not in awa. It was 65 or so here today. It has been down near freezing at night. I don't need to fix it this week, but I need to get it diagnosed/fixed in the next couple weeks. Mitch Haley via Mercedes December 23, 2016 at 7:43 PM Oh, well, it's Dece

Re: [MBZ] Monovalve

Oh, well, it's December in Iowa. Unplug it and regulate interior temps with blower speed for a few months. It'll be more pleasant to work on the car in April. Mitch. > On December 23, 2016 at 8:31 PM Jaime Kopchinski via Mercedes > wrote: > > > Doesn't prove anything... the failure of a monov

Re: [MBZ] Monovalve

Doesn't prove anything... the failure of a monovalve is due to its inability to quickly respond to plusing on/off from the control unit. Un plug it, or give it 12V, and it'll (slowly) move to the correct position and appear to work. Jaime On Fri, Dec 23, 2016 at 7:16 PM, Kaleb C. Striplin via M

Re: [MBZ] Monovalve

On Fri, 23 Dec 2016 18:16:40 -0600 "Kaleb C. Striplin via Mercedes" wrote: > Well if you removed the power to it and it went to full heat sounds > like it's working, so it's probably the interior temp sensor either not > working or the asperator motor is not pulling air across the sensor. Or th

Re: [MBZ] Monovalve

Well if you removed the power to it and it went to full heat sounds like it's working, so it's probably the interior temp sensor either not working or the asperator motor is not pulling air across the sensor. Sent from my iPhone > On Dec 23, 2016, at 5:58 PM, Curley McLain via Mercedes > wro

Re: [MBZ] Monovalve

Sounds like you need a monovalve. The failure results in water getting into the tube where the magnet while moves up and down to open and close the valve. When water gets in, the valve moves much more slowly or get stuck temporarily, resulting in very erratic behavior. Take out the 4 screws, pul

[MBZ] Monovalve

124 300D (87) Driver complains heat is sometimes working and sometimes not. I have avoided this diagnosis before by paying someone to do it. That guy is NLA (Kicked the bucket) I unplugged the monovalve, and it appears it is delivering full heat. What is the diagnosis to figure out if th

[MBZ] Monovalve insert.

W123 (and BMW etc.) Monovalve insert, called a "magnet" in the EPC.000 835 06 44FCP Euro $20 probably UroAutohausaz ~ $15.12 probably UroMBZ $206.40 genuine? Fred Moir.Lynn MA.Diesel preferred. ___ http://www.okiebenz.com

Re: [MBZ] Monovalve malfunction

Thanks. Just clamped it off with a big hemostat I had in the tool bag, we'll see if that helps. This weekend I'll probably examine the insert to see if I need to order a new one. -- Max Dillon Charleston SC '87 300TD '95 E300 On July 16, 2015 6:34:52 PM EDT, "Kaleb C. Striplin via Mercedes"

Re: [MBZ] Monovalve malfunction

Clamp Sent from my iPhone > On Jul 16, 2015, at 5:16 PM, Max Dillon via Mercedes > wrote: > > If the monovalve insert is leaking, but I really want the AC on full, can I > unplug the monovalve to stop the flow of hot water to the heater core, or do > I need to clamp off the hose? > -- > Ma

[MBZ] Monovalve malfunction

If the monovalve insert is leaking, but I really want the AC on full, can I unplug the monovalve to stop the flow of hot water to the heater core, or do I need to clamp off the hose? -- Max Dillon Charleston SC '87 300TD '95 E300 ___ http://www.okiebenz.com T

Re: [MBZ] monovalve?

The usual monovalve symptom is heat at idle, which goes away on the freeway. My SEL is doing that. As I rarely go on the freeway, and it has heat seaters, maybe someday... It has worse problems anyway. -- Jim ___ http://www.okiebenz.com To search list arc

Re: [MBZ] monovalve?

Roger 10-4. You may need to replace the entire valve assembly if that doesn't work. The body is very expensive so get a used one, if that's where you end up. BTDT. On Tue, Nov 18, 2014 at 3:32 PM, Rich Thomas via Mercedes < mercedes@okiebenz.com> wrote: > The daughter tells me today that the h

[MBZ] monovalve?

The daughter tells me today that the heat in the 84 SD is not heating, she gets a bit of warmth out of the defroster but not much. Am I correct that is a symptom of the monovalve? I vaguely recall replacing the insert in this car right after we got it. I guess it is time for another one? -

Re: [MBZ] Monovalve plug

Gary is correct, I need a mono valve plug. Please contact me at email listed below. Thanks, Mike Michael E. Esh me...@horizonenv.com michael...@mac.com http://www.yugster.com/invite/138123 (C) 231.286.2344 On Sep 08, 2013, at 06:42 PM, Frederick Moir wrote: Someone wanted a monovalve plug

Re: [MBZ] Monovalve plug

Thanks, Gary. Paging Mike Esh, paging Mike Esh.   Fred Moir Lynn MA Diesel preferred. > > From: Gary Hurst >To: Mercedes Discussion List >Sent: Sunday, September 8, 2013 6:43 PM >Subject: Re: [MBZ] Monovalve plug > > >mike esh want

Re: [MBZ] Monovalve plug

mike esh wants one On Sun, Sep 8, 2013 at 6:42 PM, Frederick Moir wrote: > Someone wanted a monovalve plug? > I've found one in my stash. > > Fred Moir > Lynn MA > Diesel preferred. > ___ > http://www.okiebenz.com > > To search list archives http://www.okieben

[MBZ] Monovalve plug

Someone wanted a monovalve plug? I've found one in my stash.   Fred Moir Lynn MA Diesel preferred. ___ 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/mai

Re: [MBZ] Monovalve Issues (I think)

Amen! I've BTDT many times. Remove the cover and pull out the insert - the mesh screen is probably torn. If intact, the only other possibility is a faulty ACC module. On Wed, Oct 31, 2012 at 2:43 PM, Rick Knoble wrote: > On Oct 31, 2012, at 1:33 PM, "Jon Agne" wrote: > >> Lately I've been hav

Re: [MBZ] Monovalve Issues (I think)

On Oct 31, 2012, at 1:33 PM, "Jon Agne" wrote: > Lately I've been having an issue about getting heat while the car is at any > sort of speed Here is a reply from Philip on the same question from my email archive. > Michael Canfield wrote: > The heater in my 83 300d only blows hot air when

[MBZ] Monovalve Issues (I think)

Lately I've been having an issue about getting heat while the car is at any sort of speed. The heat works perfect at idle in the driveway, but when I increase the rpm's to anything over 1800, the heat gradually fades away to cool air. Sometimes the heat will return when at idlesometimes not

Re: [MBZ] monovalve

I will make reading it again some more. With all the variations on this model, it is hard to nail down just what is what clay On May 6, 2012, at 8:37 PM, Jim Cathey wrote: >> I would not know one if I found it fangs deep on my backside. > > You won't find it there. Nor will you find one in y

Re: [MBZ] monovalve

I would not know one if I found it fangs deep on my backside. You won't find it there. Nor will you find one in your car. You have the sliders, aka the manual system. There are two vacuum switches on the heater sliders, opening _either_ one releases the vacuum to the element that drives a spri

[MBZ] monovalve

I would not know one if I found it fangs deep on my backside. From the chatter over the years, I take it that a failure of this leads to hades setting up house in the cabin and cooking you as you drive. If this is correct, then the 107 has failure of a monovalve. No manner of fiddling with th

[MBZ] Monovalve

On our road trip Friday the car started cooling off on the freeway, but warmed just fine when we got off. Yes, it is the monovalve insert. It has a clearly-visible tear in it. Would have been nice to have determined this a few days _before_ a long trip! -- Jim __

Re: [MBZ] monovalve captive nut

Have you "fished" around in the area where it may have come to rest with a magnet. Wilton - Original Message - From: "glenn brown" To: Sent: Thursday, October 13, 2011 4:32 PM Subject: [MBZ] monovalve captive nut While replacing all the heater hoses on my &#

Re: [MBZ] monovalve captive nut

Surely you can find something suitable at the hardware store?? Metric, stainless even, should be maybe $1.00 Allan On Thursday, October 13, 2011 4:32 PM, "glenn brown" wrote: > > While replacing all the heater hoses on my '84 300D I dropped one of the > captive nuts which normally reside

[MBZ] monovalve captive nut

While replacing all the heater hoses on my '84 300D I dropped one of the captive nuts which normally resides underneath the bracket for the monovalve on/near the firewall and am hoping someone on the list may have a spare they are willing to part with. TIA. G. M. Brown Brevard, NC

Re: [MBZ] Monovalve insert

ilto:[EMAIL PROTECTED] On Behalf Of Glenn M. Brown Sent: Saturday, January 06, 2007 2:43 PM To: mercedes@okiebenz.com Subject: [MBZ] Monovalve insert Re: Message: 12 Date: Fri, 5 Jan 2007 22:48:21 -0800 From: Jim Cathey <[EMAIL PROTECTED]> Subject: Re: [MBZ] Monovalve insert To: Mercedes Discu

[MBZ] Monovalve insert

Re: Message: 12 Date: Fri, 5 Jan 2007 22:48:21 -0800 From: Jim Cathey <[EMAIL PROTECTED]> Subject: Re: [MBZ] Monovalve insert To: Mercedes Discussion List Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=US-ASCII; format=flowed > Of the three washers sittin

Re: [MBZ] Monovalve insert

Of the three washers sitting on top of the monovalve insert shaft, I had lost the 1st one in '96 but all seemed to work OK with just the wavy steel washer and the wide, thick washer on top. When I recently replaced the monovalve insert, I found a thin washer to place on 1st and on top of this

[MBZ] Monovalve insert

Some of you may have found out about this first part some time ago. Since the monovalve insert neoprene diaphragm seems to crack/tear on a regular basis of between 3-5 years, I contacted a representative at Robert Bosch to see if the neoprene parts associated with the monovalve insert are avail

[MBZ] Monovalve insert small washer

The monovalve insert on my '83 300D is supposed to have three washers (A small thin one, a wavy sping steel one in the middle, and a larger diameter thicker one on top). Somewhere along the line I managed to lose the small thin washer and, since I'm in the process of replacing the monovalve ins

Re: [MBZ] Monovalve insert

Does anyone out there in listland have a picture or diagram of the internal order of things of a monovalve in an '84 300D Turbo which they can send me No, I don't. But there _are_ three washer things. I lost one down between the firewalls once. Two flat washers and the wavy spring washer.

[MBZ] Monovalve insert

Does anyone out there in listland have a picture or diagram of the internal order of things of a monovalve in an '84 300D Turbo which they can send me offlist? Since I purchased this car in '96, this is the second monovalve repair I've needed. Since I haven't driven this car in the winter mont

Re: [MBZ] monovalve replacement - fixed problem

Not so reasonable if you're a "jaloponist", to borrow Hurstie's term. On 12/19/05, Marshall Booth <[EMAIL PROTECTED]> wrote: > > [EMAIL PROTECTED] wrote: > >> It's so easy, and relatively cheap, that there's little reason to > >> put it off. It's also easy to examine the old part, torn rubber > >

Re: [MBZ] monovalve replacement - fixed problem

[EMAIL PROTECTED] wrote: It's so easy, and relatively cheap, that there's little reason to put it off. It's also easy to examine the old part, torn rubber is pretty apparent. You can have a positive diagnosis before spending dime one. It is an easy fix but it still cost between $30-$75 for th

Re: [MBZ] monovalve replacement - fixed problem

>It's so easy, and relatively cheap, that there's little reason to >put it off. It's also easy to examine the old part, torn rubber >is pretty apparent. You can have a positive diagnosis before >spending dime one. It is an easy fix but it still cost between $30-$75 for the part. What they real

Re: [MBZ] monovalve replacement - fixed problem

Good point. Next time I'm under the hood (which has a foot of snow on it) I'll take a look. Tim 1982 300TD Moby On 12/19/05, Jim Cathey <[EMAIL PROTECTED]> wrote: > > That's exactly my problem. Maybe I'll have to fix it. > > It's so easy, and relatively cheap, that there's little reason to > put

Re: [MBZ] monovalve replacement - fixed problem

That's exactly my problem. Maybe I'll have to fix it. It's so easy, and relatively cheap, that there's little reason to put it off. It's also easy to examine the old part, torn rubber is pretty apparent. You can have a positive diagnosis before spending dime one. -- Jim

Re: [MBZ] monovalve replacement - fixed problem

That's exactly my problem. Maybe I'll have to fix it. Tim 1982 300TD Moby On 12/14/05, Marshall Booth <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > I replaced my monovalve, which was so easy to do, and it fixed my heating > > problem. The heat would sometimes not work at all but alw

Re: [MBZ] monovalve replacement - fixed problem

[EMAIL PROTECTED] wrote: I replaced my monovalve, which was so easy to do, and it fixed my heating problem. The heat would sometimes not work at all but always would not heat after about 1/2 an hour on the road. The monovalve's rubber gasket was completely torn all the way around. Thanks to

[MBZ] monovalve replacement - fixed problem

I replaced my monovalve, which was so easy to do, and it fixed my heating problem. The heat would sometimes not work at all but always would not heat after about 1/2 an hour on the road. The monovalve's rubber gasket was completely torn all the way around. Thanks to the list for insight into