Could you possibly take a picture, because I tried a few of them, and I couldn't get it to budge.

Thanks a lot, mine's the third type. I'll give it a try today when I get the time.

Belt Sizes
 

Hey, what are you guys using for belt sizes? I have a '79 300TD (123 chassis) and a 10mm x 980mm is too small and the 10mm x 1044 is too large. This is for that pesky alternator, water pump, cooling fan...

Thanks! You don't have a part number handy, do you? When I call the shops they can't be bothered to look up the sizes... :( Thanks again!

NM, I registered for Gate's corporate window and was able to lookup the specifications, resolve them to parts numbers and buy the parts. I'll post them here in case it helps someone else...