I'm trying to refurbish the blower motor in a w126 1988 300 sel. It has been slowly getting louder over the past few months and has taken 10 minutes of driving on a coupe occasions to get started.

I have got the blower out, but I have some questions about replacing the brushes. In the picture below, you can see that I have the brushes out of the housings. My question is, can I just cut the braided copper wire leading to the old brush and just solder the new brush wire to the old, or do I have to disconnect the old wire completely from the base and attach the new wire there? Also, I keep reading about people lubricating their motors to keep them quiet, but I'm not sure exactly where to lube. Do I just put a couple drops of ATF on the new brushes and call it good? Sorry if these questions are elementary; I love to tinker, but I have very little electronics experience.

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Eric Zacharias

'88 300 SEL
'64 Ford Falcon
'99 Infiniti QX4