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  #16  
Old 06-25-2022, 12:15 AM
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I bit the bullet and bought one of these today for the 126. URO 1268200542

It was cheap enough so I decided to forgo putting new brushes in my old one. I thought about getting one at the JY for about ten seconds. No way it’ll likely be 40 years old and dead like mine.

My blower quit for the second time this week. Sometimes it just won’t spin up. Fuse was good. Checked all the connections. They’re good. It died when it was good and hot after parking in the sun.

I pulled it. I recall pulling it in the past and oiling the bearings and spraying off the commutator. The brushes had a lot more meat back then. Must have been six years ago. Now they’re little nubs. The little springs are at the end of their throw and the commutator has a nice groove worn in it. Not worth it to rebuild. Dump time.

I’ll follow up on how this 126 unit works. Hopefully it’ll perform as well as the one reviewed by Nate. Because it is hot now.

Guess I’ll be driving my 123 this weekend. My kids will be mad without the rear seat AC duct but hey it beats rolling down the window.

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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles
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  #17  
Old 06-25-2022, 10:24 PM
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Post Blower Motor Repair

The deal is : to properly overhaul an original blower motor you need to have a good commutator and then take it all the way apart and clean all the accumulated dust and crap out so it doesn't run hot then you need to soak the oilite bushings so they'll not cause drag, lubrication is critical here .

My URO blower motor is doing just fine thankyouverymuch .
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1982 240D 408,XXX miles
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  #18  
Old 06-27-2022, 12:16 AM
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For as easy as it is to access a w123 blower, Uro is worth the risk.

Others maybe not... like the w124.
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Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
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  #19  
Old 07-01-2022, 08:01 AM
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Got it in last night. Quick install.

It is not perfect. I spun the squirrel cage around by hand and it had a slight wobble to it. I squeezed gently on the fan and it deformed a bit into round and stayed there. Spun it around and then it had less wobble.

It blows. I feel it pushes air with about 90% the pressure of my old one. Note this is the 126 variant. This is just a feeling. I didn’t do any quantitative measurement.

When I run it I can hear a low frequency warble on the roar of the fan which may be the out of round squirrel cage. Again it’s subtle but it’s different. Before putting the fan in I noticed the impeller didn’t have the little balancing wires like the OEM model.

Hey, but it works and for the price I’m satisfied. Thanks to URO for providing a replacement part for our cars. The packaging was really good. It comes with a heavy plastic insert designed to keep the motor from getting crushed in shipping. The engineer who did this made it look kind of like an apple product.

It’s nice to have a new part on the shelf at Pelican available for our cars.
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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles
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  #20  
Old 07-01-2022, 11:47 AM
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Hi Ykobayashi, thanks for the feedback!

Pelican offers Blower Motor 126 820 0542 / 1268200542 here: https://www.pelicanparts.com/More_Info/1268200542.htm?pn=126-820-05-42-M253

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W123 HVAC Blower Motor Review-1268200542-front.jpg  
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  #21  
Old 07-02-2022, 01:07 PM
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Post

The picture clearly shows a balancing clip, maybe you's didn't need it ? .

The price break is certainly right .
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1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better
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  #22  
Old 07-02-2022, 02:26 PM
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I drove around a bit and I am satisfied. w126 blower from URO gets a thumbs up.

It blows well. I believe my degradation in airflow is not the URO motor, it's the fact that my ignition switch has some excess resistance in it on the blower circuit. I've recently found it is due for replacement. When I rotate the switch in the run position slightly the fan moves slightly slower and faster. Definitely a wonky switch. Blower is good. Got a post about this issue too. Maybe I need a URO switch? Maybe OEM since the ignition switch is mission critical.

The fan warble has gone away. Maybe it spin balanced itself. The plastic on the squirrel cage is much more pliable than the MB OEM fan. There were no weights on the impeller. But when I got it out of the box it was slightly out of round. I actually was thinking of returning it. But it may have straightened itself out. The sound is much more monotone roar now. Sounds normal.

Here is the package. The packaging looked so much like the fan I thought I had the wrong fan.

Nice Packaging.


No Weights.
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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles
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  #23  
Old 07-02-2022, 08:21 PM
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Post W126 HVAC Fan URO

Thanx for the update ! .

I forwarded the info to my brother who's 1987 300SDL' fan is howling from a try bushing .

I fear he'll ignore it until it seizes up and fries something else....
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1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better
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  #24  
Old 07-25-2022, 09:08 PM
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This blower really vibrates a lot. It is so out of balance I can feel the vibes coming through my steering wheel. I thought it got better but it is just awful. AWFUL! Note this is the 126 blower not a 123 blower which got glowing reviews above. I thought something was wrong with my engine this morning when I was running the AC on MAX. It was the wobbly blower.

It does blow a lot of air. I originally thought it blew less but I think it actually blows more than my old OEM blower. It just vibrates a lot. Most definitely it’s the wobble I noticed before installing it.

When I get around to it I’m going to pull the impeller off my old unit and swap it over to the URO. Hopefully the shaft diameter is the same.
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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles
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  #25  
Old 07-25-2022, 09:28 PM
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Post Vibrations

Well ;

That sucks .

I've not had the W126 blower in my hand, the W123 blower's shaft sticks all the way through the plastic fa and is removed by very carefully knocking the shaft out of the blower using a flat nose punch of the correct size .

DO NOT try to pull the squirrel cage fan wheel off ! they're easy to break .

Try to remove the old fan first I'd think .

Let us know .
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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better
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  #26  
Old 07-26-2022, 11:44 AM
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Quote:
Originally Posted by vwnate1 View Post
Well ;

DO NOT try to pull the squirrel cage fan wheel off ! they're easy to break .

Try to remove the old fan first I'd think .

Let us know .
Wise. I recall removing one…maybe on this car. Two kid’s building blocks, a punch and a hammer.
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79 300TD “Old Smokey” AKA “The Mistake” (SOLD)
82 240D stick shift 335k miles (SOLD)
82 300SD 300k miles
85 300D Turbodiesel 170k miles
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  #27  
Old 07-26-2022, 12:47 PM
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Quote:
Originally Posted by ykobayashi View Post
Wise. I recall removing one…maybe on this car. Two kid’s building blocks, a punch and a hammer.
This was my method as well.
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  #28  
Old 07-26-2022, 04:38 PM
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Thumbs up On The Same Page

Good deal, let us know how it works out .

Some of the Uro W123 blowers I have seen have the same sort of balancing clips on the squirrel cage .
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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better
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  #29  
Old 07-28-2022, 09:15 PM
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Re key switch, I powered the blower speed box in my W123 directly from BAT+ via a 30A relay. I unsoldered the normal power feed wire which now triggers the relay and soldered the relay output wire there. Reason was I've had blower controls melt in other cars and the #8 fuse position melted in my 300D.
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  #30  
Old 07-29-2022, 03:52 PM
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Thumbs up Load Shunting

Yes, that's a good thing Bill .

Too many simply add on ever more crap then wonder why the ignition switch or fuse box fails .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better
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