I was driving down the street yesterday, and my car starts making this horrific hissing sound. I thought it was the fan clutch, but no...it was the alternator. No big deal with the alternator going out, but it would catch, and stop turning for a few seconds at a time. I have never seen anything like that before, thought I would share.

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My Primary Driver - '85 300CD - 4-speed conversion, 2.47 rear, lowered, euro headlights, rebuilding (not restoring so much)

Wife's - '08 Saab Sportcombi Aero

Riding a '03 Yamaha Warrior

Sounds like the alternator bearing seized up. The problem is that your alternator shares belts with the water-pump, so you are not going anyplace until you replace the alternator.

Getting to that bottom bolt to remove the alternator is a swine of a job

???. I replaced one on my 77 a few weeks ago and didn't have any problem. Which bolt are you talking about?

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

If you take time to jack up the front end its easy too get to from underneath.

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

I had a BOSCH reman on a 123.123. The nut on the pulley backed itself off while heading up I-5. That was a surprise. Made no odd noise what so ever. I just happened to notice bizarre gauge behavior.