Re: [MBZ] resoldering W123 ACC howto
Try using a battery. Some of the newer battery chargers won't put out unless connected to a battery. I have one like that. Also you need to trace the circuit with a meter set to read continuity see if there is a good connection between the the end of the plug to the respective brush ends on each wire. I have had a couple of motors over the years where there was an interruption of some kind in there. One was the flex wire attached to the brush. The brush was still good and long but wasn't getting a good connection all the time because the wire that was supposed to be on it had come out of the brush. Had to put a new brush in. Allan Streib wrote: I'm using my battery charger as a power supply; it's good. ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
LWB250 lwb...@yahoo.com writes: In photo MWC-023 you can see the solder joints between the bottom PC board and side boards. These are the ones that develop cracks over the years and need to be reflowed. If you have any questions on how to do this, let me know. Resoldered the ACC boards, and still no blower. So my next suspect is the blower motor brushes. Allan -- 1983 300D ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
I would first put 12 volts to the blower to see it the fan works. If it does then its something else if no go then pull it out. Douglas LWB250 lwb...@yahoo.com writes: In photo MWC-023 you can see the solder joints between the bottom PC board and side boards. These are the ones that develop cracks over the years and need to be reflowed. If you have any questions on how to do this, let me know. Resoldered the ACC boards, and still no blower. So my next suspect is the blower motor brushes. Allan -- 1983 300D ___ 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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
On Thu, 25 Feb 2010 06:12 -0800, Douglas jgi...@comcast.net wrote: I would first put 12 volts to the blower to see it the fan works. If it does then its something else if no go then pull it out. I had the same idea this morning... and no, it does not run with 12V applied directly to the leads. Even if I spin the motor by hand it does not start. The brushes are sort of curved... are they going to be something I could find locally? I don't know how far they can wear before trouble sets in; visually, they seem to be making good contact. The blower has been intermittent for some time, yesterday it finally stopped working altogether, though it did come to life for a few seconds one time when I went over a bump. Allan ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Resoldered the ACC boards, and still no blower. So my next suspect is the blower motor brushes. If it responds favorably to bumps, or to kicking it under the dash, then it's brushes. (Or worse.) The brushes are pushed by a spring at the other end. That's where the failure starts. Either they get too short and the spring bottoms out, failing to put pressure on the brushes, or the brushes get cocked in their guides and jam. (Either way, poor contact, no blow.) Or worst, the brushes chew on into the commutator! -- 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Or worst, the brushes chew on into the commutator! I meant, the _springs_ chew on into the commutator. -- 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Just buy a good used blower motor. I can sell you one for $50 plus actual SH. On Thu, Feb 25, 2010 at 10:17 AM, Jim Cathey j...@windwireless.net wrote: Or worst, the brushes chew on into the commutator! I meant, the _springs_ chew on into the commutator. -- 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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
You should be able to go to your local Ace or True Value hardware store that has the magic boxes of all sorts of obscure hardware and stuff. One set they have is small appliance and tool motor brushes. You can find brushes that are nearly identical to the originals in there for a couple of bucks a piece. Dan BTDT --- On Thu, 2/25/10, Allan Streib str...@cs.indiana.edu wrote: From: Allan Streib str...@cs.indiana.edu Subject: Re: [MBZ] resoldering W123 ACC howto To: Mercedes Discussion List mercedes@okiebenz.com Date: Thursday, February 25, 2010, 9:35 AM On Thu, 25 Feb 2010 06:12 -0800, Douglas jgi...@comcast.net wrote: I would first put 12 volts to the blower to see it the fan works. If it does then its something else if no go then pull it out. I had the same idea this morning... and no, it does not run with 12V applied directly to the leads. Even if I spin the motor by hand it does not start. The brushes are sort of curved... are they going to be something I could find locally? I don't know how far they can wear before trouble sets in; visually, they seem to be making good contact. The blower has been intermittent for some time, yesterday it finally stopped working altogether, though it did come to life for a few seconds one time when I went over a bump. Allan ___ 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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Resoldered the ACC boards, and still no blower. So my next suspect is the blower motor brushes. Allan, I had the same problem with my SDL and it turned out to be a melted fuse holder in the fuse box. The 300D can also have this problem. Check out this thread at Peachparts. http://www.peachparts.com/shopforum/showthread.php?p=2384351#post2384351 Harry ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
On Thu, 25 Feb 2010 10:18 -0800, LWB250 lwb...@yahoo.com wrote: You should be able to go to your local Ace or True Value hardware store that has the magic boxes of all sorts of obscure hardware and stuff. One set they have is small appliance and tool motor brushes. You can find brushes that are nearly identical to the originals in there for a couple of bucks a piece. Checked at Tru Value, they had some brushes but nothing close to what's on this motor. Looking at the brushes, they aren't worn down all that far, IMO. They don't have internal springs, they are in a pivoting carrier that has a spring holding it down against the commutator. There is over 1cm of the brush still remaining outside of the carrier. So if the brushes are not worn out, what else could cause the motor to not run at all? I've got the motor out and supplying 12v directly, so there are no fuses or switches or anything else in the equation. Allan -- 1983 300D ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Bearings? open winding? -- John W Reames jwrea...@comcast.net Home: +14106646986 Mobile: +14437915905 On Feb 25, 2010, at 18:29, Allan Streib str...@cs.indiana.edu wrote: On Thu, 25 Feb 2010 10:18 -0800, LWB250 lwb...@yahoo.com wrote: You should be able to go to your local Ace or True Value hardware store that has the magic boxes of all sorts of obscure hardware and stuff. One set they have is small appliance and tool motor brushes. You can find brushes that are nearly identical to the originals in there for a couple of bucks a piece. Checked at Tru Value, they had some brushes but nothing close to what's on this motor. Looking at the brushes, they aren't worn down all that far, IMO. They don't have internal springs, they are in a pivoting carrier that has a spring holding it down against the commutator. There is over 1cm of the brush still remaining outside of the carrier. So if the brushes are not worn out, what else could cause the motor to not run at all? I've got the motor out and supplying 12v directly, so there are no fuses or switches or anything else in the equation. Allan -- 1983 300D ___ 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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
On Thu, 25 Feb 2010 09:35:40 -0500 Allan Streib str...@cs.indiana.edu wrote: The blower has been intermittent for some time, yesterday it finally stopped working altogether, though it did come to life for a few seconds one time when I went over a bump. There's your clue: something is intermittent. Craig ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] resoldering W123 ACC howto
Can anyone point me to a how-to on resoldering the pushbuttons on my ACC? It finally got to the point today where slapping the side of the console will not keep the fan running. I have the ACC with the horizontal buttons and the vertical fan speed buttons, with a narrow translucent auto button between the high and low speeds. Thanks, Allan -- 1983 300D ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
To answer my own question, looks like there is (was) a nice write-up at diymbrepair.com. Anyone know who ran that domain? It's not active any longer but The Wayback Machine to the rescue! http://web.archive.org/web/20071013022903rn_1/www.diymbrepair.com/Climate/ Allan Streib str...@cs.indiana.edu writes: Can anyone point me to a how-to on resoldering the pushbuttons on my ACC? It finally got to the point today where slapping the side of the console will not keep the fan running. I have the ACC with the horizontal buttons and the vertical fan speed buttons, with a narrow translucent auto button between the high and low speeds. Thanks, Allan -- 1983 300D ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Thanks for posting, good to have. Might pull it apart and have a look at it, and give it a good clean. I'm a big fan of dielectric grease. I do EVERY connection on my old porsche every few years, paying special attention to all the grounds. Never had an electrical problem in 20 years. Good winter project too. Can dream of summer drives while tinkering. Ed 300E On 24 February 2010 19:34, Allan Streib str...@cs.indiana.edu wrote: To answer my own question, looks like there is (was) a nice write-up at diymbrepair.com. Anyone know who ran that domain? It's not active any longer but The Wayback Machine to the rescue! http://web.archive.org/web/20071013022903rn_1/www.diymbrepair.com/Climate/ Allan Streib str...@cs.indiana.edu writes: Can anyone point me to a how-to on resoldering the pushbuttons on my ACC? It finally got to the point today where slapping the side of the console will not keep the fan running. I have the ACC with the horizontal buttons and the vertical fan speed buttons, with a narrow translucent auto button between the high and low speeds. Thanks, Allan -- 1983 300D ___ 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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Check out my photos on how to remove the ACC and resolder it - no text, but I think the photos will tell most of the story. Once of these days I've got to do the write-up for this. http://gallery.me.com/dpenoff#100140 Dan --- On Wed, 2/24/10, Allan Streib str...@cs.indiana.edu wrote: From: Allan Streib str...@cs.indiana.edu Subject: Re: [MBZ] resoldering W123 ACC howto To: Mercedes Discussion List mercedes@okiebenz.com Date: Wednesday, February 24, 2010, 7:34 PM To answer my own question, looks like there is (was) a nice write-up at diymbrepair.com. Anyone know who ran that domain? It's not active any longer but The Wayback Machine to the rescue! http://web.archive.org/web/20071013022903rn_1/www.diymbrepair.com/Climate/ Allan Streib str...@cs.indiana.edu writes: Can anyone point me to a how-to on resoldering the pushbuttons on my ACC? It finally got to the point today where slapping the side of the console will not keep the fan running. I have the ACC with the horizontal buttons and the vertical fan speed buttons, with a narrow translucent auto button between the high and low speeds. Thanks, Allan -- 1983 300D ___ 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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
In photo MWC-023 you can see the solder joints between the bottom PC board and side boards. These are the ones that develop cracks over the years and need to be reflowed. If you have any questions on how to do this, let me know. Dan --- On Wed, 2/24/10, LWB250 lwb...@yahoo.com wrote: From: LWB250 lwb...@yahoo.com Subject: Re: [MBZ] resoldering W123 ACC howto To: Mercedes Discussion List mercedes@okiebenz.com Date: Wednesday, February 24, 2010, 8:03 PM Check out my photos on how to remove the ACC and resolder it - no text, but I think the photos will tell most of the story. Once of these days I've got to do the write-up for this. http://gallery.me.com/dpenoff#100140 Dan --- On Wed, 2/24/10, Allan Streib str...@cs.indiana.edu wrote: From: Allan Streib str...@cs.indiana.edu Subject: Re: [MBZ] resoldering W123 ACC howto To: Mercedes Discussion List mercedes@okiebenz.com Date: Wednesday, February 24, 2010, 7:34 PM To answer my own question, looks like there is (was) a nice write-up at diymbrepair.com. Anyone know who ran that domain? It's not active any longer but The Wayback Machine to the rescue! http://web.archive.org/web/20071013022903rn_1/www.diymbrepair.com/Climate/ Allan Streib str...@cs.indiana.edu writes: Can anyone point me to a how-to on resoldering the pushbuttons on my ACC? It finally got to the point today where slapping the side of the console will not keep the fan running. I have the ACC with the horizontal buttons and the vertical fan speed buttons, with a narrow translucent auto button between the high and low speeds. Thanks, Allan -- 1983 300D ___ 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://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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Great photos Dan, I think you have the makings of an ace how to: writeup there. :-) Look forward to reading it when you finish it. Ed 300E On 24 February 2010 20:03, LWB250 lwb...@yahoo.com wrote: Check out my photos on how to remove the ACC and resolder it - no text, but I think the photos will tell most of the story. Once of these days I've got to do the write-up for this. http://gallery.me.com/dpenoff#100140 Dan --- On Wed, 2/24/10, Allan Streib str...@cs.indiana.edu wrote: From: Allan Streib str...@cs.indiana.edu Subject: Re: [MBZ] resoldering W123 ACC howto To: Mercedes Discussion List mercedes@okiebenz.com Date: Wednesday, February 24, 2010, 7:34 PM To answer my own question, looks like there is (was) a nice write-up at diymbrepair.com. Anyone know who ran that domain? It's not active any longer but The Wayback Machine to the rescue! http://web.archive.org/web/20071013022903rn_1/www.diymbrepair.com/Climate/ Allan Streib str...@cs.indiana.edu writes: Can anyone point me to a how-to on resoldering the pushbuttons on my ACC? It finally got to the point today where slapping the side of the console will not keep the fan running. I have the ACC with the horizontal buttons and the vertical fan speed buttons, with a narrow translucent auto button between the high and low speeds. Thanks, Allan -- 1983 300D ___ 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://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://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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] resoldering W123 ACC howto
Heh. What can I say I used to write and develop technical manuals, so it comes from that Thanks! Dan --- On Wed, 2/24/10, E M pokieba...@gmail.com wrote: From: E M pokieba...@gmail.com Subject: Re: [MBZ] resoldering W123 ACC howto To: Mercedes Discussion List mercedes@okiebenz.com Date: Wednesday, February 24, 2010, 8:16 PM Great photos Dan, I think you have the makings of an ace how to: writeup there. :-) Look forward to reading it when you finish it. Ed 300E On 24 February 2010 20:03, LWB250 lwb...@yahoo.com wrote: Check out my photos on how to remove the ACC and resolder it - no text, but I think the photos will tell most of the story. Once of these days I've got to do the write-up for this. http://gallery.me.com/dpenoff#100140 Dan ___ 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
