What is the THREAD pitch of the 22mm alternator pulley nut? 1983 300D turbo diesel
 

Mine fell off

Moderator EDIT: The thread pitch is 14 x 1.5


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I think you mean what size are the Threads.

why the hell a 22 mm nut?

I would guess maybe an M14x2 but that is normally a 21 mm head (ISO preferred size). I don't see why 21 mm would be no good if the thread matches...

Sorry, that is what I meant.

What size is the 22mm nut...
 

What size is the 22mm nut...

At first, I thought this was something along the lines of "how much weighs more? A pound of feathers, or a pound of lead?" :D

All is good now...

I said 22mm because that's the size socket used to remove it. It's in this guide
PeachPartsWiki: Refreshing the Alternator and I was trying to prevent confusion as to which nut I was referring to.

I know what you mean, I mean no offense to you, only to MB (Bosch?) engineers :)

I mean a 22 mm head nut is just a strange device, normally it should be a 21 or a 24 mm, it is like something you put only in case of having a nut and a bolt so you can use one set of wrenches or something.

Unless maybe if it is inch, like a 7/8 head on a 1/2 inch thread...

Call a local alternator/ starter rebuild place, they can hook you up.

or

Go to the junkyard and find another Bosch alternator. I know Saabs use them as well, and yank the bolt it ought to fit.

Did you remove the nut or did it fall off?

it's 13/16" I think. it's the same size that all the alternators use. go to a parts yard, and pull the nut of any alternator in the yard, it'll fit.

Did you find the Lock Washer?

The nut fell off, along with the lock washer

Okay so M14x2 is the wrong thread size

It is 14x1.5

For future reference, this was the correct size.