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Post Info TOPIC: Replacing Heater Blower Motor - 1983 380 SEL


Senior Guest

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Replacing Heater Blower Motor - 1983 380 SEL


Hello again everyone!  smile

We took our 380 for a short cruise and for the first time, I noticed that the heater blower motor has started the sporadic whining noise.  Sounds like the bearings are going out or dry.  I've heard that the motor can't be repaired so replacing it is in order, before it goes out.

The motor is the original and has never had any issues until now.  Is it accessible from under the dash or, from the firewall?  What do I need to look out for when removing it?  Any how-to tips are welcome.  Thanks much!

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1983 MB 380SEL


$y$Op

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Welcome back!

Well you are right about the motors not being repaired however I have heard rumors about people changing the brushes. Unfortunately from what you explain the brushes are not the problem.

Usually when the motor starts to make noise like that its time for a new one. Having had many older Mercedes in distress I have experienced this problem in the past before also. What happens next is the motor heats up and starts to melt the plastic casing and boy does that ever emit a nasty smell thru the vents. Best to replace it now before this happens. Also its important to remember that a blower motor with bad bearings puts excessive load on other components such as the blower speed control, blower fuse and even the climate control panel.

I have attached some photos for reference. I think that for the most part yours will look the same. The photos I am attaching are from 1986-1991 models as usual however if anything looks different feel free to post some more of them good photos.

The blower motor is located on the passengers side under the dash, you will have to remove the panel just under the dash and you will gain access to the 4 Philips head screws to remove the cover. Let me know if anything looks different on your end. The blower motor speed control is the part that looks like a triangle bed of nails.



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$y$Op

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I was just wondering how it turned out? Did you ever get the blower motor replaced?

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Rookie

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Here are a couple of pics of the motor that came out of my '83 SD.

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'84 CD
'83 SD



Rookie

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im sorry for a late comment but I hope this could help you... for replacing the blower motor first you need to locate it then disconnect electrical connectors plugged into blower motor. Remove screws and the blower motor fan. Images above can help you give ideas bout replacement.

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-- Edited by jenwhite on Friday 29th of June 2012 09:24:33 PM



-- Edited by jenwhite on Friday 29th of June 2012 09:25:32 PM

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