Ha, I just replaced the blower fan in my 740iL this weekend. Was no picnic but not as bad as some cars. I replaced one in our W126 280SE (1985 euro version) and I think it took about an hour. So easy.
Friend's 87 RR was not quite a picnic, a couple hours to get to the dash but it's incredibly simple. Tacked on in a random location and it's in a box with the heater core. AC\Heater fans are seperate but wired together, interesting.
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