A/C blower not working - PeachParts Mercedes-Benz Forum

Robert W. Roe · #1 06-18-2005, 12:56 PM

Quote:

Originally Posted by lee polowczuk

did you check the external fuse on the drivers side just in front of the master cylinder?

it's in its own black rectangular box.

Wow, thanks!
I checked this, and that 30A strip fuse had a hairline crack; I guess it blew.
I bridged it with a couple of alligator clips, and voila, my fan blew.
Now to get a replacement; my semi-useless local MB dealer is out of them...

Looks like your advice saved me $300+ a lot of work

Thanks again, Bob

rjk · #2 06-19-2005, 08:34 AM

Finally got around to pulling the blower motor (not hard, just fiddly and time consuming). It feels like the bearings are siezed. It is difficult to rotate the armature. I put on a few drops of WD-40 and it loosened up a small amount but by no means is it turning freely. Both brushes looked OK and moved freely in their holders. Am I correct in assuming it is off to the the pick-n-pull I go? A new one (no dust filter by the way) can be had for between $100 and $350 depending on manuf. and vendor (eBay is cheapest). Got a few quotes on used ones w/guarantees & shipping for as low as $65. Anyone know of a better idea??

rjk · #3 06-20-2005, 07:38 AM

Are blowers rebuildable by the avg. BYM? Are parts (bearings) available?

rjk · #4 06-29-2005, 10:54 AM

Just got a used blower in the mail. It, too, has what I consider to be tight bearings although not as tight as the old motor. It is not what you would call free-spinning, if you spin the wheel by hand it will stop withing 1/4 turn. Is this normal? Does it feel tight because of the permanent magnets?

Anyway, I'm installing the new unit today. Wish me luck.

Arthur Dalton · #5 06-29-2005, 12:29 PM

If it were me, I would at least oil up the bearings of the used one and then hook it to bat power before install.
..preferably with an amp meter in series .. looking for no more than 25A

if you do not have an amp meter , run it for a few min and see if it get hot.. if too hot, it is drawing high Amperage.. meter would be best..

rjk · #6 06-29-2005, 02:42 PM

Got it in this AM. Put some WD-40 on the bearings hoping it might penetrate. Works great, current draw is not excessive. Thanks to all who contributed.

FYI, I got the used blower assy. from Mike at:

EURASIAN FOREIGN AUTO PARTS
http://www.eur-asian.com
3244 So Platte River Drive
Englewood, CO. 80110
1-800-944-3215
303-922-8396

He tested it before he sent it out. The price was $10 less than any other quote I got and included the cost of shipping! $65 total. I had other quotes starting from $75 all the way up to over $100, without shipping. It took about a week to get here via DHL. I suppose they could ship it faster for a price but I didn't ask since I wasn't in a hurry.

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