Thanks Nate.
Your situation sounds different then mine, being that my blower works at
low to high speeds just fine, with the replacement controller. Just
changing out the controller, it went from no air, to air at all speeds.
I'll keep the blower in mind, if there further issues, as I'm sure the
brushes are worn after all these years. I picked up another A/C
controller yesterday at PAP, while getting a few things for my wife's
car, just to keep in the trunk. It looked pretty good, with a nice clean
circuit board, not burned like many are. I won't test it until next
week, as right now the A/C is working great, and I need to drive inland
into the heat this weekend, so don't mess with it.
Rob
'85 300D
Garden Grove, CA
=
On 7/27/13 3:27 AM, diesel_mercedes@yahoogroups.com wrote:
> Re: HVA/C blower problem
> Posted by: "Nate"vwnate1@yahoo.com vwnate1
> Date: Fri Jul 26, 2013 10:51 am ((PDT))
>
>
> Not really sure ;
>
> My blower worked fine and dandy except when it didn't , then it began to not want to run on the low speed where I like it .
>
> So , being nosy I took it all apart and found it not only filthy (normal for any air flow device) but the brushes were only like 4 MM long and the commutator was toast~ it's worn at a 45° angle so I know my new brush kit from Mercedes Source is but a band aid repair .
>
> Once I get a bit caught up in my other works (front end rebuild , two engines , routine stuff too) I'll grab Tom and take a P-A-P tour and find one in better shape , maybe even a low use replacement one .
>
> In general , you will always find the highest wear part , the first to fail so I'd look at the blower motor .
>
> -Nate
> Rob wrote :
>> >
>> >No, I haven't changed out the brushes. What are the signs of bad brushes?
>> >My blower seems to work fine at all speeds, then nothing, pointing to
>> >the controller.
>> >Thanks
>> >
>> >Rob
>> >
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