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Old 01-09-2003, 04:24 AM
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Cool W124 Blower Motor Removal Photos

I replaced the blower motor in my 1990 300CE today. Because I've seen numerous posts from folks who wanted photos of the disassembly process, I took some pics and threw together a little web page.

:EDIT: (Moderator whunter)

This DIY is now in the Wiki HERE.

Last edited by whunter; 08-05-2008 at 01:17 AM. Reason: added link to Wiki
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Old 01-09-2003, 06:39 AM
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Excellent work - thanks for taking the time.
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Old 01-09-2003, 11:12 AM
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Yeah! Great job! My blower is squeaky on my W124, and I though getting to it required dismantling the dashboard!

The pics are certainly helpful!!!
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Old 01-09-2003, 12:10 PM
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Mine sqeaked intermittently for about two months before finally giving out during our first taste of winter weather. Living without a defroster really sucks!

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Old 01-09-2003, 12:26 PM
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awesome DIY

i've been looking for months trying to find a DIY on getting under that wiper

there was a DIY for it on a C-class, but it was different and i couldn't get under there

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Old 01-09-2003, 12:28 PM
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thanks for the excellent photos and documentation.i went thru this proceedure about a month motor was squeaking and just required a little oil in the great now
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Old 01-09-2003, 12:37 PM
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I could have tried fixing the old motor. However, considering the amount of effort involved it was well worth the $100 for a new motor to know that I shouldn't have to mess with this again for a long time. It's way too easy to break one of the plastic pieces or drop a screw somewhere you'll never find it, so I plan on staying out of there if at all possible. Besides, I can always have my old motor rebuilt and sell it on eBay.
1998 S320
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Old 01-09-2003, 01:41 PM
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Location: Miami, FL
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Rebuilding that blower motor

The blower motor is cleverly designed to make replacing the bearings pretty close to impossible. The whole assembly seems to be pressed and welded together, so the bearings, which are the main moving part to wear out, to be replaced.

You CAN lubricate the bearings, which is what makes these things squeak, and replace the brushes without too much difficulty.

You can test it off the car by using a 12v transformer or a battery charger. A test wiring harness can be adapted from wires you snipped off with the connectors attached at the U-Pick junkyard or perhaps scavenged from an old stereo.
I took my motor out, and tested and lubed it, but it won't turn inside the car. I wanted to use the car so I reassembled it and plugged everything in, and it sisn't work. Then the temperature went down to 40 F and it started turning for a brief, though thrilling, period.

I am assuming that I will need to replace the resistor, the aluminum heatsink gizmo that varies the fan speed.

Thanks for posting these photos. It will inspire courage in all of us.
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Old 01-09-2003, 01:52 PM
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I too have a squeaky fan, and your description and photos have given me the impetus to go and lubricate the bearings.

A great job - well done and thanks.

You should contact Haynes. Maybe they need a new contributor.


1994 E200 Wagon 116k miles
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Old 01-09-2003, 05:14 PM
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This should go into the DIY section here!

Great job! I did lubricate mine when I changed the evaporator. Talking about a job...
'86 300E
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Old 03-29-2003, 12:57 PM
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Has he moved his web sight the link does not work any longer?
Does anyone know where I can find some other pics?

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Old 03-29-2003, 02:42 PM
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Yeah, we need the link! It's not working, and this is important stuff!
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Old 03-30-2003, 12:19 AM
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Definatly need the link!!!!!!!!
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Old 04-27-2003, 10:16 AM
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How can I get a look at these Pics.
The url is "unfound" for me

Many Thanks for reply
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Old 05-25-2003, 03:51 AM
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The link isn't working, I'd pay real money for these pics right about now!

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