When I changed the Bosch alternator on my BMW, I did it without an impact.

Just did it very carefully, holding the fan as I recall.

It was 10 years ago, so I dont remember the exact technique, but it WAS possible.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

I save old belts-V and multirib. Then I just wrap an old one around the pulley and lock it in a vise. usually can get it loose that way.

I picked up the 12 volt impact wrench from HF for 25 bucks. Seems like a good deal.

I'll be trying in out soon on that bolt.

Thanks for the info!