Hi!
I've read threads about removing the alternator from my W123 (1982 300TD), but now, on the job, it's confounding.

My understanding:

From the photo,

Nut #1 has to be loosened (but not removed) to allow belt tension to relax. Bolts #2 & #3 then have to be backed out far enough for the alternator to fall out. The NUT on the fan side of bolt #3 is welded to the adjustment bracket, so all three of these fasteners are loosened from the side in this image (that is, the back of the alternator).

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My problem: Bolt #3 doesn't turn. I can get a 17mm combo wrench on it, but if it's not turning, should I go get a cheater bar? That's all I can think of. I just want to make sure I need to get that one off.

Then, I can forsee lots of problems backing those two bolts out, particularly given how little space there is. I've heard many folks use ratcheting wrenches on these bolts: is that a straight ratcheting wrench, a stubby, or a flex-ratcheting wrench?

Am I not removing enough? I've taken off the air filter housing and the EGR heat shield, but it's still so crammed in there.

Thanks,
Marshall

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marshall

1982 300TD (220,000 mi.)