Hello:

This is my first post, and I apologize in advance if I violate any protocols.

I've just purchased a lovely '91 300 TE. The only fault I can detect is a squeaky heater and a/c fan. It's a little louder and more persistent than I'd like to live with, but I know these things can be really deeply buried within the maw of the dashboard.

My questions, then, are whether the bearings can be lubed or replaced, or if the entire motor or motor and fan assembly has to be replaced; how does one access it; and how hard is it to do so?

Many thanks in advance.

Kris Hicks-Green
Olympia WA

 

Welcome to the forum! Just watch your spelling and never say anything bad about your car and you will not violate the protocol.

I've heard most people use transmission fluid to lubricate it. I used turbine oil from a zoom spout oiler and it worked great as well. It's not really under the dash; you access it from under the windshield wiper motor.

http://www.mercedesshop.com/Wikka/W124BlowerMotor

 

Fantastic. Thanks, shdoug. I've bookmarked the link you provided, and will tackle the project next weekend. It looks a lot easier than I anticipated. I have a feeling that my neighborhood parts store doesn't stock turbine oil, however...

Kris

 

I got mine at an HVAC supply house. It was easy to come by since that was my profession. The blower is not that bad if you have good lighting and some time to work at your own pace. I was in a hurry in a badly lit garage in freezing weather- it was not fun.